docs: add Python 3.8 to the identifer list (#728 )

Bump version: v1.12.0
ci: pin dockcross for tests
2021-06-22 18:15:25 -04:00 · 2021-06-22 18:13:50 +01:00 · 2021-06-21 12:27:18 -04:00 · 2021-06-21 12:27:18 -04:00 · 2021-06-21 12:27:18 -04:00 · 2021-05-28 15:58:38 +01:00
97 changed files with 3362 additions and 2424 deletions
@@ -4,6 +4,7 @@ on:
  push:
    branches:
      - master
+      - 1.x
  pull_request:
    paths-ignore:
      - 'docs/**'
@@ -21,6 +22,7 @@ jobs:

  test:
    name: Test cibuildwheel on ${{ matrix.os }}
+    needs: pre-commit
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
@@ -38,17 +40,8 @@ jobs:
      run: |
        python -m pip install -e ".[dev]"

-    - name: Install Visual C++ for Python 2.7
-      if: runner.os == 'Windows'
-      run: |
-        choco install vcpython27 -f -y
-
-    - name: Get PR labels
-      id: pr-labels
-      uses: joerick/pr-labels-action@v1.0.6
-
    - name: Sample build
-      if: contains(steps.pr-labels.outputs.labels, ' ci-sample-build ')
+      if: "contains(github.event.pull_request.labels.*.name, 'CI: Sample build')"
      run: |
        python bin/sample_build.py

@@ -70,6 +63,7 @@ jobs:

  test-emulated:
    name: Test emulated cibuildwheel using qemu
+    needs: pre-commit
    runs-on: ubuntu-latest
    timeout-minutes: 180
    steps:
@@ -23,7 +23,7 @@ jobs:
    - name: "Run update: python configs"
      run: python ./bin/update_pythons.py --force
    - name: Create Pull Request
-      if: github.ref == 'refs/heads/master' && github.repository == 'joerick/cibuildwheel'
+      if: github.ref == 'refs/heads/master' && github.repository == 'pypa/cibuildwheel'
      uses: peter-evans/create-pull-request@v3
      with:
        commit-message: Update dependencies
@@ -6,21 +6,28 @@ repos:
  - id: check-case-conflict
  - id: check-merge-conflict
  - id: check-yaml
+  - id: check-toml
+  - id: debug-statements
  - id: end-of-file-fixer
    exclude: (cibuildwheel/resources/pinned_docker_images.cfg)|(.svg$)
  - id: mixed-line-ending
  - id: trailing-whitespace

 - repo: https://github.com/PyCQA/isort
-  rev: 5.7.0
+  rev: 5.8.0
  hooks:
  - id: isort

 - repo: https://github.com/psf/black
-  rev: 20.8b1
+  rev: 21.4b2
  hooks:
  - id: black
-    files: ^bin/update_pythons.py|setup.py$
+
+- repo: https://github.com/asottile/setup-cfg-fmt
+  rev: v1.17.0
+  hooks:
+  - id: setup-cfg-fmt
+    stages: [manual]

 - repo: https://github.com/pre-commit/mirrors-mypy
  rev: v0.812
@@ -36,20 +43,24 @@ repos:
    args: ["--python-version=3.7", "--ignore-missing-imports", "--scripts-are-modules"]

 - repo: https://github.com/asottile/pyupgrade
-  rev: v2.10.0
+  rev: v2.14.0
  hooks:
  - id: pyupgrade
+    name: PyUpgrade 3.6+
    args: ["--py36-plus"]
+    exclude: ^bin/
+  - id: pyupgrade
+    name: PyUpgrade 3.7+ on bin
+    exclude: ^(cibuildwheel|unit_test|test)/
+    args: ["--py37-plus"]

- repo: https://gitlab.com/pycqa/flake8
-  rev: 3.8.4
+- repo: https://github.com/PyCQA/flake8
+  rev: 3.9.1
  hooks:
  - id: flake8
    exclude: cibuildwheel/resources/
    additional_dependencies: [flake8-bugbear]

-
-# The original pybind11 checks for a few C++ style items
 - repo: local
  hooks:
  - id: disallow-caps
@@ -1,4 +1,6 @@
-language: minimal
+os: linux
+dist: focal
+language: python

 branches:
  only:
@@ -7,53 +9,42 @@ branches:
 jobs:
  include:
    - name: Linux | x86_64 + i686 | Python 3.6
-      language: python
      python: 3.6
      services: docker
      env: PYTHON=python

    - name: Linux | arm64 | Python 3.6
-      language: python
      python: 3.6
      services: docker
      arch: arm64
      env: PYTHON=python

    - name: Linux | ppc64le | Python 3.6
-      language: python
      python: 3.6
      services: docker
      arch: ppc64le
-      env: PYTHON=python
-
-    - name: macOS | x86_64 | Python 3.x
-      os: osx
      env:
-        - PYTHON=python3
-        - PYTEST_ADDOPTS='-k "unit_test or test_0_basic" --suppress-no-test-exit-code'
+        - PYTHON=python
+        # skip test_manylinuxXXXX_only, it uses too much disk space
+        # c.f. https://travis-ci.community/t/running-out-of-disk-space-quota-when-using-docker-on-ppc64le/11634
+        - PYTEST_ADDOPTS='-k "not test_manylinuxXXXX_only"'

    - name: Windows | x86_64 | Python 3.6
      os: windows
      language: shell
      before_install:
-       - choco install python3 --version 3.6.8 --no-progress -y
-       # Update root certificates to fix SSL error; see http://www.chawn.com/RootCerts.htm
-       - powershell "md C:\temp\certs; CertUtil -generateSSTFromWU C:\temp\certs\RootStore.sst; Get-ChildItem -Path C:\\temp\certs\Rootstore.sst | Import-Certificate -CertStoreLocation Cert:\\LocalMachine\\Root\\ | out-null"
+        - choco upgrade python3 -y --version 3.6.8 --limit-output
+        # Update root certificates to fix SSL error; see http://www.chawn.com/RootCerts.htm
+        - powershell "md C:\temp\certs; CertUtil -generateSSTFromWU C:\temp\certs\RootStore.sst; Get-ChildItem -Path C:\\temp\certs\Rootstore.sst | Import-Certificate -CertStoreLocation Cert:\\LocalMachine\\Root\\ | out-null"
      env:
        - PYTHON=C:\\Python36\\python

-    - &linux_s390x_36
-      name: Linux | s390x | Python 3.6
-      language: python
+    - name: Linux | s390x | Python 3.6
      python: 3.6
      services: docker
      arch: s390x
      env: PYTHON=python

-  allow_failures:
-    # must repeat the s390x job above exactly to match
-    - *linux_s390x_36
-
 install: $PYTHON -m pip install -e ".[dev]" pytest-custom-exit-code

 script: $PYTHON ./bin/run_tests.py
@@ -1,46 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at joerick@mac.com. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
-
-[homepage]: http://contributor-covenant.org
-[version]: http://contributor-covenant.org/version/1/4/
@@ -3,11 +3,11 @@ cibuildwheel

 [![PyPI](https://img.shields.io/pypi/v/cibuildwheel.svg)](https://pypi.python.org/pypi/cibuildwheel)
 [![Documentation Status](https://readthedocs.org/projects/cibuildwheel/badge/?version=stable)](https://cibuildwheel.readthedocs.io/en/stable/?badge=stable)
-[![Actions Status](https://github.com/joerick/cibuildwheel/workflows/Test/badge.svg)](https://github.com/joerick/cibuildwheel/actions)
-[![Travis Status](https://img.shields.io/travis/joerick/cibuildwheel/master?logo=travis)](https://travis-ci.org/joerick/cibuildwheel)
-[![AppVeyor status](https://ci.appveyor.com/api/projects/status/wbsgxshp05tt1tif/branch/master?svg=true)](https://ci.appveyor.com/project/joerick/cibuildwheel/branch/master)
-[![CircleCI Status](https://img.shields.io/circleci/build/gh/joerick/cibuildwheel/master?logo=circleci)](https://circleci.com/gh/joerick/cibuildwheel)
-[![Azure Status](https://dev.azure.com/joerick0429/cibuildwheel/_apis/build/status/joerick.cibuildwheel?branchName=master)](https://dev.azure.com/joerick0429/cibuildwheel/_build/latest?definitionId=2&branchName=master)
+[![Actions Status](https://github.com/pypa/cibuildwheel/workflows/Test/badge.svg)](https://github.com/pypa/cibuildwheel/actions)
+[![Travis Status](https://img.shields.io/travis/com/pypa/cibuildwheel/master?logo=travis)](https://travis-ci.com/pypa/cibuildwheel)
+[![Appveyor status](https://ci.appveyor.com/api/projects/status/gt3vwl88yt0y3hur/branch/master?svg=true)](https://ci.appveyor.com/project/joerick/cibuildwheel/branch/master)
+[![CircleCI Status](https://img.shields.io/circleci/build/gh/pypa/cibuildwheel/master?logo=circleci)](https://circleci.com/gh/pypa/cibuildwheel)
+[![Azure Status](https://dev.azure.com/joerick0429/cibuildwheel/_apis/build/status/pypa.cibuildwheel?branchName=master)](https://dev.azure.com/joerick0429/cibuildwheel/_build/latest?definitionId=4&branchName=master)


 [Documentation](https://cibuildwheel.readthedocs.org)
@@ -28,13 +28,13 @@ What does it do?
 | CPython 3.5     | ✅ |   | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
 | CPython 3.6     | ✅ |   | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
 | CPython 3.7     | ✅ |   | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
-| CPython 3.8     | ✅ |   | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
+| CPython 3.8     | ✅ | ✅ | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
 | CPython 3.9     | ✅ | ✅ | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
 | PyPy 2.7 v7.3.3 | ✅ |    |    | ✅  | ✅ |    |    |    |   |
 | PyPy 3.6 v7.3.3 | ✅ |    |    | ✅  | ✅ |    |    |    |   |
 | PyPy 3.7 (beta) v7.3.3 | ✅ | |  | ✅  | ✅ |    |    |   |    |

-<sup>¹ Not supported on Travis</sup><br>
+<sup>¹ Only using a workaround with a newer compiler; Microsoft removed the 2008 compiler for Python 2.7 in April 2021.</sup><br>

 - Builds manylinux, macOS 10.9+, and Windows wheels for CPython and PyPy
 - Works on GitHub Actions, Azure Pipelines, Travis CI, AppVeyor, CircleCI, and GitLab CI
@@ -48,7 +48,7 @@ Usage

 |                 | Linux | macOS | Windows | Linux ARM |
 |-----------------|-------|-------|---------|--------------|
-| GitHub Actions  | ✅    | ✅    | ✅      | ✅¹           |
+| GitHub Actions  | ✅    | ✅    | ✅      | ✅¹          |
 | Azure Pipelines | ✅    | ✅    | ✅      |              |
 | Travis CI       | ✅    | ✅    | ✅      | ✅           |
 | AppVeyor        | ✅    | ✅    | ✅      |              |
@@ -86,7 +86,7 @@ jobs:
      - uses: actions/setup-python@v2

      - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==1.10.0
+        run: python -m pip install cibuildwheel==1.12.0

      - name: Build wheels
        run: python -m cibuildwheel --output-dir wheelhouse
@@ -99,7 +99,7 @@ jobs:
          path: ./wheelhouse/*.whl
 ```

-For more information, including building on Python 2, PyPI deployment, and the use of other CI services or the dedicated GitHub Action, check out the [documentation](https://cibuildwheel.readthedocs.org) and the [examples](https://github.com/joerick/cibuildwheel/tree/master/examples).
+For more information, including building on Python 2, PyPI deployment, and the use of other CI services or the dedicated GitHub Action, check out the [documentation](https://cibuildwheel.readthedocs.org) and the [examples](https://github.com/pypa/cibuildwheel/tree/master/examples).

 Options
 -------
@@ -146,44 +146,55 @@ Here are some repos that use cibuildwheel.
 | [websockets][]                    | ![travisci icon][] | ![apple icon][] ![linux icon][] | Library for building WebSocket servers and clients. Mostly written in Python, with a small C 'speedups' extension module.  |
 | [pyzmq][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Python bindings for zeromq, the networking library. Uses Cython and CFFI.  |
 | [aiortc][]                        | ![github icon][] | ![apple icon][] ![linux icon][] | WebRTC and ORTC implementation for Python using asyncio. |
-| [numexpr][]                       | ![github icon][] ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Fast numerical array expression evaluator for Python, NumPy, PyTables, pandas, bcolz and more |
-| [coverage.py][]                   | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The coverage tool for Python |
-| [h5py][]                          | ![azurepipelines icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | HDF5 for Python -- The h5py package is a Pythonic interface to the HDF5 binary data format. |
 | [River][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | 🌊 Online machine learning in Python |
-| [PyAV][]                          | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Pythonic bindings for FFmpeg's libraries. |
+| [coverage.py][]                   | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The coverage tool for Python |
+| [numexpr][]                       | ![github icon][] ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Fast numerical array expression evaluator for Python, NumPy, PyTables, pandas, bcolz and more |
+| [h5py][]                          | ![azurepipelines icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | HDF5 for Python -- The h5py package is a Pythonic interface to the HDF5 binary data format. |
 | [Dependency Injector][]           | ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Dependency injection framework for Python, uses Windows TravisCI |
+| [PyAV][]                          | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Pythonic bindings for FFmpeg's libraries. |
 | [PyTables][]                      | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A Python package to manage extremely large amounts of data |
 | [ruptures][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Extensive Cython + NumPy [pyproject.toml](https://github.com/deepcharles/ruptures/blob/master/pyproject.toml) example. |
 | [aioquic][]                       | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | QUIC and HTTP/3 implementation in Python |
-| [google neuroglancer][]           | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | WebGL-based viewer for volumetric data |
 | [pikepdf][]                       | ![azurepipelines icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A Python library for reading and writing PDF, powered by qpdf |
+| [DeepForest][]                    | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | An Efficient, Scalable and Optimized Python Framework for Deep Forest (2021.2.1) |
+| [google neuroglancer][]           | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | WebGL-based viewer for volumetric data |
 | [AutoPy][]                        | ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Includes a Windows Travis build. |
 | [Parselmouth][]                   | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A Python interface to the Praat software package, using pybind11, C++17 and CMake, with the core Praat static library built only once and shared between wheels. |
 | [python-rapidjson][]              | ![travisci icon][] ![gitlab icon][] ![appveyor icon][] | ![windows icon][] ![linux icon][] | Python wrapper around rapidjson |
 | [Rtree][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Rtree: spatial index for Python GIS ¶ |
+| [python-snappy][]                 | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Python bindings for the snappy google library |
+| [markupsafe][]                    | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Safely add untrusted strings to HTML/XML markup. |
+| [H3-py][]                         | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Python bindings for H3, a hierarchical hexagonal geospatial indexing system |
+| [pybind11 cmake_example][]        | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Example pybind11 module built with a CMake-based build system |
 | [KDEpy][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Kernel Density Estimation in Python |
 | [cyvcf2][]                        | ![github icon][] | ![apple icon][] ![linux icon][] | cython + htslib == fast VCF and BCF processing |
-| [pybind11 cmake_example][]        | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Example pybind11 module built with a CMake-based build system |
 | [pybind11 python_example][]       | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Example pybind11 module built with a Python-based build system |
+| [sourmash][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Quickly search, compare, and analyze genomic and metagenomic data sets. |
 | [dd-trace-py][]                   | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Uses custom alternate arch emulation on GitHub |
 | [iminuit][]                       | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Jupyter-friendly Python interface for C++ MINUIT2 |
-| [jq.py][]                         | ![travisci icon][] | ![apple icon][] ![linux icon][] | Python bindings for jq |
-| [matrixprofile][]                 | ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A Python 3 library making time series data mining tasks, utilizing matrix profile algorithms, accessible to everyone. |
 | [time-machine][]                  | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Time mocking library using only the CPython C API. |
+| [matrixprofile][]                 | ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A Python 3 library making time series data mining tasks, utilizing matrix profile algorithms, accessible to everyone. |
 | [CTranslate2][]                   | ![github icon][] | ![apple icon][] ![linux icon][] | Includes libraries from the [Intel oneAPI toolkit](https://software.intel.com/content/www/us/en/develop/tools/oneapi/base-toolkit.html). The Linux wheels also include CUDA libraries for GPU execution. |
+| [jq.py][]                         | ![travisci icon][] | ![apple icon][] ![linux icon][] | Python bindings for jq |
 | [Tokenizer][]                     | ![github icon][] ![travisci icon][] | ![apple icon][] ![linux icon][] | Fast and customizable text tokenization library with BPE and SentencePiece support |
+| [PyGLM][]                         | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Fast OpenGL Mathematics (GLM) for Python |
 | [bx-python][]                     | ![travisci icon][] | ![apple icon][] ![linux icon][] | A library that includes Cython extensions. |
 | [boost-histogram][]               | ![github icon][] ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Supports full range of wheels, including PyPy and alternate archs. |
-| [pybase64][]                      | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Fast Base64 encoding/decoding in Python |
+| [iDynTree][]                      | ![github icon][] | ![linux icon][] | Uses manylinux_2_24 |
 | [TgCrypto][]                      | ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Includes a Windows Travis build. |
+| [pybase64][]                      | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Fast Base64 encoding/decoding in Python |
 | [etebase-py][]                    | ![travisci icon][] | ![linux icon][] | Python bindings to a Rust library using `setuptools-rust`, and `sccache` for improved speed. |
 | [pyjet][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The interface between FastJet and NumPy |
 | [numpythia][]                     | ![github icon][] | ![apple icon][] ![linux icon][] | The interface between PYTHIA and NumPy |
 | [fathon][]                        | ![travisci icon][] | ![apple icon][] ![linux icon][] | python package for DFA (Detrended Fluctuation Analysis) and related algorithms |
-| [Imagecodecs (fork)][]            | ![azurepipelines icon][] | ![apple icon][] ![linux icon][] | Over 20 external dependencies in compiled libraries, custom docker image, `libomp`, `openblas` and `install_name_tool` for macOS. |
+| [polaroid][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Full range of wheels for setuptools rust, with auto release and PyPI deploy. |
+| [GSD][]                           | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Cython and NumPy project with 64-bit wheels. |
+| [pybind11 scikit_build_example][] | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | An example combining scikit-build and pybind11 |
 | [pyinstrument_cext][]             | ![travisci icon][] ![appveyor icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A simple C extension, without external dependencies |
 | [xmlstarlet][]                    | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Python 3.6+ CFFI bindings with true MSVC build. |
-| [pybind11 scikit_build_example][] | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | An example combining scikit-build and pybind11 |
+| [CorrectionLib][]                 | ![github icon][] | ![apple icon][] ![linux icon][] | Structured JSON powered correction library for HEP, designed for the CMS experiment at CERN. |
+| [Imagecodecs (fork)][]            | ![azurepipelines icon][] | ![apple icon][] ![linux icon][] | Over 20 external dependencies in compiled libraries, custom docker image, `libomp`, `openblas` and `install_name_tool` for macOS. |
+| [SiPM][]                          | ![github icon][] | ![apple icon][] ![linux icon][] | High performance library for SiPM detectors simulation using C++17, OpenMP and AVX2 intrinsics. |

 [scikit-learn]: https://github.com/scikit-learn/scikit-learn
 [Matplotlib]: https://github.com/matplotlib/matplotlib
@@ -194,44 +205,55 @@ Here are some repos that use cibuildwheel.
 [websockets]: https://github.com/aaugustin/websockets
 [pyzmq]: https://github.com/zeromq/pyzmq
 [aiortc]: https://github.com/aiortc/aiortc
-[numexpr]: https://github.com/pydata/numexpr
-[coverage.py]: https://github.com/nedbat/coveragepy
-[h5py]: https://github.com/h5py/h5py
 [River]: https://github.com/online-ml/river
-[PyAV]: https://github.com/PyAV-Org/PyAV
+[coverage.py]: https://github.com/nedbat/coveragepy
+[numexpr]: https://github.com/pydata/numexpr
+[h5py]: https://github.com/h5py/h5py
 [Dependency Injector]: https://github.com/ets-labs/python-dependency-injector
+[PyAV]: https://github.com/PyAV-Org/PyAV
 [PyTables]: https://github.com/PyTables/PyTables
 [ruptures]: https://github.com/deepcharles/ruptures
 [aioquic]: https://github.com/aiortc/aioquic
-[google neuroglancer]: https://github.com/google/neuroglancer
 [pikepdf]: https://github.com/pikepdf/pikepdf
+[DeepForest]: https://github.com/LAMDA-NJU/Deep-Forest
+[google neuroglancer]: https://github.com/google/neuroglancer
 [AutoPy]: https://github.com/autopilot-rs/autopy
 [Parselmouth]: https://github.com/YannickJadoul/Parselmouth
 [python-rapidjson]: https://github.com/python-rapidjson/python-rapidjson
 [Rtree]: https://github.com/Toblerity/rtree
+[python-snappy]: https://github.com/andrix/python-snappy
+[markupsafe]: https://github.com/pallets/markupsafe
+[H3-py]: https://github.com/uber/h3-py
+[pybind11 cmake_example]: https://github.com/pybind/cmake_example
 [KDEpy]: https://github.com/tommyod/KDEpy
 [cyvcf2]: https://github.com/brentp/cyvcf2
-[pybind11 cmake_example]: https://github.com/pybind/cmake_example
 [pybind11 python_example]: https://github.com/pybind/python_example
+[sourmash]: https://github.com/dib-lab/sourmash
 [dd-trace-py]: https://github.com/DataDog/dd-trace-py
 [iminuit]: https://github.com/scikit-hep/iminuit
-[jq.py]: https://github.com/mwilliamson/jq.py
-[matrixprofile]: https://github.com/matrix-profile-foundation/matrixprofile
 [time-machine]: https://github.com/adamchainz/time-machine
+[matrixprofile]: https://github.com/matrix-profile-foundation/matrixprofile
 [CTranslate2]: https://github.com/OpenNMT/CTranslate2
+[jq.py]: https://github.com/mwilliamson/jq.py
 [Tokenizer]: https://github.com/OpenNMT/Tokenizer
+[PyGLM]: https://github.com/Zuzu-Typ/PyGLM
 [bx-python]: https://github.com/bxlab/bx-python
 [boost-histogram]: https://github.com/scikit-hep/boost-histogram
-[pybase64]: https://github.com/mayeut/pybase64
+[iDynTree]: https://github.com/robotology/idyntree
 [TgCrypto]: https://github.com/pyrogram/tgcrypto
+[pybase64]: https://github.com/mayeut/pybase64
 [etebase-py]: https://github.com/etesync/etebase-py
 [pyjet]: https://github.com/scikit-hep/pyjet
 [numpythia]: https://github.com/scikit-hep/numpythia
 [fathon]: https://github.com/stfbnc/fathon
-[Imagecodecs (fork)]: https://github.com/czaki/imagecodecs_build
+[polaroid]: https://github.com/daggy1234/polaroid
+[GSD]: https://github.com/glotzerlab/gsd
+[pybind11 scikit_build_example]: https://github.com/pybind/scikit_build_example
 [pyinstrument_cext]: https://github.com/joerick/pyinstrument_cext
 [xmlstarlet]: https://github.com/dimitern/xmlstarlet
-[pybind11 scikit_build_example]: https://github.com/pybind/scikit_build_example
+[CorrectionLib]: https://github.com/cms-nanoAOD/correctionlib
+[Imagecodecs (fork)]: https://github.com/czaki/imagecodecs_build
+[SiPM]: https://github.com/EdoPro98/SimSiPM

 [appveyor icon]: docs/data/readme_icons/appveyor.svg
 [github icon]: docs/data/readme_icons/github.svg
@@ -243,57 +265,68 @@ Here are some repos that use cibuildwheel.
 [apple icon]: docs/data/readme_icons/apple.svg
 [linux icon]: docs/data/readme_icons/linux.svg

-<!-- scikit-learn: 44623, last pushed 0 days ago -->
-<!-- Matplotlib: 13149, last pushed 0 days ago -->
-<!-- MyPy: 9944, last pushed 0 days ago -->
-<!-- psutil: 7071, last pushed 1 days ago -->
-<!-- scikit-image: 4193, last pushed 0 days ago -->
-<!-- twisted-iocpsupport: 4172, last pushed 2 days ago -->
-<!-- websockets: 3196, last pushed 1 days ago -->
-<!-- pyzmq: 2696, last pushed 1 days ago -->
-<!-- aiortc: 2216, last pushed 0 days ago -->
-<!-- numexpr: 1538, last pushed 7 days ago -->
-<!-- coverage.py: 1501, last pushed 3 days ago -->
-<!-- h5py: 1483, last pushed 0 days ago -->
-<!-- River: 1395, last pushed 0 days ago -->
-<!-- PyAV: 1169, last pushed 5 days ago -->
-<!-- Dependency Injector: 1132, last pushed 0 days ago -->
-<!-- PyTables: 1003, last pushed 5 days ago -->
-<!-- ruptures: 623, last pushed 6 days ago -->
-<!-- aioquic: 583, last pushed 3 days ago -->
-<!-- google neuroglancer: 565, last pushed 13 days ago -->
-<!-- pikepdf: 540, last pushed 18 days ago -->
-<!-- AutoPy: 520, last pushed 163 days ago -->
-<!-- Parselmouth: 466, last pushed 0 days ago -->
-<!-- python-rapidjson: 416, last pushed 68 days ago -->
-<!-- Rtree: 387, last pushed 57 days ago -->
-<!-- KDEpy: 242, last pushed 4 days ago -->
-<!-- cyvcf2: 242, last pushed 5 days ago -->
-<!-- pybind11 cmake_example: 233, last pushed 65 days ago -->
-<!-- pybind11 python_example: 232, last pushed 10 days ago -->
-<!-- dd-trace-py: 213, last pushed 0 days ago -->
-<!-- iminuit: 169, last pushed 8 days ago -->
-<!-- jq.py: 144, last pushed 9 days ago -->
-<!-- matrixprofile: 133, last pushed 23 days ago -->
-<!-- time-machine: 131, last pushed 0 days ago -->
-<!-- CTranslate2: 129, last pushed 1 days ago -->
-<!-- Tokenizer: 123, last pushed 3 days ago -->
-<!-- bx-python: 95, last pushed 59 days ago -->
-<!-- boost-histogram: 68, last pushed 0 days ago -->
-<!-- pybase64: 55, last pushed 2 days ago -->
-<!-- TgCrypto: 53, last pushed 94 days ago -->
-<!-- etebase-py: 45, last pushed 46 days ago -->
-<!-- pyjet: 27, last pushed 10 days ago -->
-<!-- numpythia: 24, last pushed 10 days ago -->
-<!-- fathon: 21, last pushed 18 days ago -->
-<!-- Imagecodecs (fork): 15, last pushed 8 days ago -->
-<!-- pyinstrument_cext: 10, last pushed 7 days ago -->
-<!-- xmlstarlet: 7, last pushed 3 days ago -->
-<!-- pybind11 scikit_build_example: 4, last pushed 28 days ago -->
+<!-- scikit-learn: 45793, last pushed 0 days ago -->
+<!-- Matplotlib: 13636, last pushed 0 days ago -->
+<!-- MyPy: 10696, last pushed 0 days ago -->
+<!-- psutil: 7319, last pushed 4 days ago -->
+<!-- scikit-image: 4342, last pushed 0 days ago -->
+<!-- twisted-iocpsupport: 4266, last pushed 0 days ago -->
+<!-- websockets: 3349, last pushed 0 days ago -->
+<!-- pyzmq: 2792, last pushed 1 days ago -->
+<!-- aiortc: 2396, last pushed 32 days ago -->
+<!-- River: 1604, last pushed 0 days ago -->
+<!-- coverage.py: 1592, last pushed 6 days ago -->
+<!-- numexpr: 1586, last pushed 75 days ago -->
+<!-- h5py: 1517, last pushed 1 days ago -->
+<!-- Dependency Injector: 1318, last pushed 20 days ago -->
+<!-- PyAV: 1246, last pushed 2 days ago -->
+<!-- PyTables: 1023, last pushed 53 days ago -->
+<!-- ruptures: 704, last pushed 0 days ago -->
+<!-- aioquic: 644, last pushed 13 days ago -->
+<!-- pikepdf: 624, last pushed 9 days ago -->
+<!-- DeepForest: 591, last pushed 6 days ago -->
+<!-- google neuroglancer: 586, last pushed 3 days ago -->
+<!-- AutoPy: 533, last pushed 251 days ago -->
+<!-- Parselmouth: 511, last pushed 0 days ago -->
+<!-- python-rapidjson: 420, last pushed 156 days ago -->
+<!-- Rtree: 403, last pushed 59 days ago -->
+<!-- python-snappy: 398, last pushed 82 days ago -->
+<!-- markupsafe: 390, last pushed 0 days ago -->
+<!-- H3-py: 376, last pushed 0 days ago -->
+<!-- pybind11 cmake_example: 271, last pushed 6 days ago -->
+<!-- KDEpy: 264, last pushed 7 days ago -->
+<!-- cyvcf2: 260, last pushed 19 days ago -->
+<!-- pybind11 python_example: 250, last pushed 6 days ago -->
+<!-- sourmash: 241, last pushed 0 days ago -->
+<!-- dd-trace-py: 237, last pushed 0 days ago -->
+<!-- iminuit: 181, last pushed 0 days ago -->
+<!-- time-machine: 160, last pushed 0 days ago -->
+<!-- matrixprofile: 158, last pushed 68 days ago -->
+<!-- CTranslate2: 157, last pushed 0 days ago -->
+<!-- jq.py: 152, last pushed 15 days ago -->
+<!-- Tokenizer: 140, last pushed 14 days ago -->
+<!-- PyGLM: 103, last pushed 7 days ago -->
+<!-- bx-python: 102, last pushed 47 days ago -->
+<!-- boost-histogram: 78, last pushed 0 days ago -->
+<!-- iDynTree: 75, last pushed 3 days ago -->
+<!-- TgCrypto: 64, last pushed 16 days ago -->
+<!-- pybase64: 62, last pushed 1 days ago -->
+<!-- etebase-py: 50, last pushed 134 days ago -->
+<!-- pyjet: 28, last pushed 6 days ago -->
+<!-- numpythia: 28, last pushed 15 days ago -->
+<!-- fathon: 25, last pushed 65 days ago -->
+<!-- polaroid: 16, last pushed 69 days ago -->
+<!-- GSD: 16, last pushed 1 days ago -->
+<!-- pybind11 scikit_build_example: 14, last pushed 6 days ago -->
+<!-- pyinstrument_cext: 10, last pushed 95 days ago -->
+<!-- xmlstarlet: 7, last pushed 29 days ago -->
+<!-- CorrectionLib: 5, last pushed 5 days ago -->
+<!-- Imagecodecs (fork): 3, last pushed 19 days ago -->
+<!-- SiPM: 2, last pushed 15 days ago -->

 <!-- END bin/projects.py -->

-> Add your repo here! Let us know on [GitHub Discussions](https://github.com/joerick/cibuildwheel/discussions/485), or send a PR, adding your information to `docs/data/projects.yml`.
+> Add your repo here! Let us know on [GitHub Discussions](https://github.com/pypa/cibuildwheel/discussions/485), or send a PR, adding your information to `docs/data/projects.yml`.
 >
 > <sup>I'd like to include notes here to indicate why an example might be interesting to cibuildwheel users - the styles/technologies/techniques used in each. Please include that in future additions!</sup>

@@ -313,6 +346,29 @@ Changelog

 <!--changelog-start-->

+### v1.12.0
+
+_22 June 2021_
+
+- ✨ Adds support building universal2/arm64 wheels on Python 3.8.
+
+### v1.11.1
+
+_28 May 2021_
+
+- ✨ cibuildwheel is now part of the PyPA!
+- 📚 Minor docs changes, fixing links related to the above transition
+- 🛠 Update manylinux pins to the last version containing Python 2.7 and 3.5. (#674)
+
+### v1.11.0
+
+_1 May 2021_
+
+- 📚 Lots of docs improvements! (#650, #623, #616, #609, #606)
+- 🐛 Fix nuget "Package is not found" error on Windows. (#653)
+- ⚠️ cibuildwheel will no longer build Windows 2.7 wheels, unless you specify a custom toolchain using `DISTUTILS_USE_SDK=1` and `MSSdk=1`. This is because Microsoft have stopped distributing Visual C++ Compiler for Python 2.7. See [this FAQ entry](https://cibuildwheel.readthedocs.io/en/stable/faq/#windows-and-python-27) for more details. (#649)
+- 🐛 Fix crash on Windows due to missing `which` command (#641).
+
 ### v1.10.0

 _22 Feb 2021_
@@ -355,7 +411,7 @@ _5 February 2021_

  ```yaml
  - name: Build wheels
-    uses: joerick/cibuildwheel@version # e.g. v1.9.0
+    uses: pypa/cibuildwheel@version # e.g. v1.9.0
    with:
      output-dir: wheelhouse
    # env:
@@ -683,7 +739,7 @@ _26 May 2019_
 - 🌟 Add support for building on Azure pipelines! This lets you build all
  Linux, Mac and Windows wheels on one service, so it promises to be the
  easiest to set up! Check out the quickstart in the docs, or
-  [cibuildwheel-azure-example](https://github.com/joerick/cibuildwheel-azure-example)
+  [cibuildwheel-azure-example](https://github.com/pypa/cibuildwheel-azure-example)
  for an example project. (#126, #132)
 - 🛠 Internal change - the end-to-end test projects format was updated, so we
  can more precisely assert what should be produced for each one. (#136, #137).
@@ -838,6 +894,8 @@ Contributing

 For more info on how to contribute to cibuildwheel, see the [docs](https://cibuildwheel.readthedocs.io/en/latest/contributing/).

+Everyone interacting with the cibuildwheel project via codebase, issue tracker, chat rooms, or otherwise is expected to follow the [PSF Code of Conduct](https://github.com/pypa/.github/blob/main/CODE_OF_CONDUCT.md).
+
 Maintainers
 -----------

@@ -857,9 +915,9 @@ Credits

 Massive props also to-

- @zfrenchee for [help debugging many issues](https://github.com/joerick/cibuildwheel/issues/2)
- @lelit for some great bug reports and [contributions](https://github.com/joerick/cibuildwheel/pull/73)
- @mayeut for a [phenomenal PR](https://github.com/joerick/cibuildwheel/pull/71) patching Python itself for better compatibility!
+- @zfrenchee for [help debugging many issues](https://github.com/pypa/cibuildwheel/issues/2)
+- @lelit for some great bug reports and [contributions](https://github.com/pypa/cibuildwheel/pull/73)
+- @mayeut for a [phenomenal PR](https://github.com/pypa/cibuildwheel/pull/71) patching Python itself for better compatibility!
 - @czaki for being a super-contributor over many PRs and helping out with countless issues!
 - @mattip for his help with adding PyPy support to cibuildwheel

@@ -22,7 +22,7 @@ init:
 install: python -m pip install -e ".[dev]" pytest-custom-exit-code

 # the '-u' flag is required so the output is in the correct order.
-# See https://github.com/joerick/cibuildwheel/pull/24 for more info.
+# See https://github.com/pypa/cibuildwheel/pull/24 for more info.
 test_script: python -u ./bin/run_tests.py

 branches:
@@ -26,8 +26,6 @@ jobs:
    - task: UsePythonVersion@0
      inputs:
        versionSpec: '3.6'
-    - script: choco install vcpython27 -f -y
-      displayName: Install Visual C++ for Python 2.7
    - bash: |
        python -m pip install -e ".[dev]" pytest-azurepipelines
        python ./bin/run_tests.py
@@ -39,8 +37,6 @@ jobs:
    - task: UsePythonVersion@0
      inputs:
        versionSpec: '3.8'
-    - script: choco install vcpython27 -f -y
-      displayName: Install Visual C++ for Python 2.7
    - bash: |
        python -m pip install -e ".[dev]" pytest-azurepipelines
        python ./bin/run_tests.py
@@ -1,6 +1,8 @@
 #!/usr/bin/env python3


+from __future__ import annotations
+
 import glob
 import os
 import subprocess
@@ -15,55 +17,66 @@ import cibuildwheel

 config = [
    # file path, version find/replace format
-    ('README.md', "cibuildwheel=={}"),
-    ('cibuildwheel/__init__.py', "__version__ = '{}'"),
-    ('docs/faq.md', "cibuildwheel=={}"),
-    ('docs/faq.md', "cibuildwheel@v{}"),
-    ('docs/setup.md', "cibuildwheel=={}"),
-    ('examples/*', "cibuildwheel=={}"),
-    ('examples/*', "cibuildwheel@v{}"),
-    ('setup.cfg', "version = {}"),
+    ("README.md", "cibuildwheel=={}"),
+    ("cibuildwheel/__init__.py", '__version__ = "{}"'),
+    ("docs/faq.md", "cibuildwheel=={}"),
+    ("docs/faq.md", "cibuildwheel@v{}"),
+    ("docs/setup.md", "cibuildwheel=={}"),
+    ("examples/*", "cibuildwheel=={}"),
+    ("examples/*", "cibuildwheel@v{}"),
+    ("setup.cfg", "version = {}"),
 ]

+RED = "\u001b[31m"
+GREEN = "\u001b[32m"
+OFF = "\u001b[0m"
+

-# This file requires Python 3.7
-# Setting -> None will cause MyPy to notice this.
@click.command()
-def bump_version():
+def bump_version() -> None:
    current_version = cibuildwheel.__version__

    try:
-        commit_date_str = subprocess.run([
-            'git',
-            'show', '-s', '--pretty=format:%ci',
-            f'v{current_version}^{{commit}}'
-        ], check=True, capture_output=True, encoding='utf8').stdout
-        commit_date_parts = commit_date_str.split(' ')
+        commit_date_str = subprocess.run(
+            [
+                "git",
+                "show",
+                "--no-patch",
+                "--pretty=format:%ci",
+                f"v{current_version}^{{commit}}",
+            ],
+            check=True,
+            capture_output=True,
+            encoding="utf8",
+        ).stdout
+        cd_date, cd_time, cd_tz = commit_date_str.split(" ")

-        url = 'https://github.com/joerick/cibuildwheel/pulls?' + urllib.parse.urlencode({
-            'q': f'is:pr merged:>{commit_date_parts[0]}T{commit_date_parts[1]}{commit_date_parts[2]}',
-        })
-        print(f'PRs merged since last release:\n  {url}')
+        url_opts = urllib.parse.urlencode({"q": f"is:pr merged:>{cd_date}T{cd_time}{cd_tz}"})
+        url = f"https://github.com/pypa/cibuildwheel/pulls?{url_opts}"
+
+        print(f"PRs merged since last release:\n  {url}")
        print()
    except subprocess.CalledProcessError as e:
        print(e)
-        print('Failed to get previous version tag information.')
+        print("Failed to get previous version tag information.")

-    git_changes_result = subprocess.run(['git diff-index --quiet HEAD --'], shell=True)
+    git_changes_result = subprocess.run(["git diff-index --quiet HEAD --"], shell=True)
    repo_has_uncommitted_changes = git_changes_result.returncode != 0

    if repo_has_uncommitted_changes:
-        print('error: Uncommitted changes detected.')
+        print("error: Uncommitted changes detected.")
        sys.exit(1)

+    # fmt: off
    print(              'Current version:', current_version)  # noqa
    new_version = input('    New version: ').strip()
+    # fmt: on

    try:
        Version(new_version)
    except InvalidVersion:
        print("error: This version doesn't conform to PEP440")
-        print('       https://www.python.org/dev/peps/pep-0440/')
+        print("       https://www.python.org/dev/peps/pep-0440/")
        sys.exit(1)

    actions = []
@@ -72,7 +85,7 @@ def bump_version():
        paths = [Path(p) for p in glob.glob(path_pattern)]

        if not paths:
-            print(f'error: Pattern {path_pattern} didn’t match any files')
+            print(f"error: Pattern {path_pattern} didn't match any files")
            sys.exit(1)

        find_pattern = version_pattern.format(current_version)
@@ -80,15 +93,19 @@ def bump_version():
        found_at_least_one_file_needing_update = False

        for path in paths:
-            contents = path.read_text(encoding='utf8')
+            contents = path.read_text(encoding="utf8")
            if find_pattern in contents:
                found_at_least_one_file_needing_update = True
                actions.append(
-                    (path, find_pattern, replace_pattern)
+                    (
+                        path,
+                        find_pattern,
+                        replace_pattern,
+                    )
                )

        if not found_at_least_one_file_needing_update:
-            print(f'error: Didn’t find any occurrences of “{find_pattern}” in “{path_pattern}”')
+            print(f'''error: Didn't find any occurrences of "{find_pattern}" in "{path_pattern}"''')
            sys.exit(1)

    print()
@@ -96,48 +113,53 @@ def bump_version():
    print()

    for action in actions:
-        print('{}  {red}{}{off} → {green}{}{off}'.format(
-            *action,
-            red="\u001b[31m", green="\u001b[32m", off="\u001b[0m"
-        ))
+        path, find, replace = action
+        print(f"{path}  {RED}{find}{OFF} → {GREEN}{replace}{OFF}")

-    print(f'Then commit, and tag as v{new_version}')
+    print(f"Then commit, and tag as v{new_version}")

-    answer = input('Proceed? [y/N] ').strip()
+    answer = input("Proceed? [y/N] ").strip()

-    if answer != 'y':
-        print('Aborted')
+    if answer != "y":
+        print("Aborted")
        sys.exit(1)

    for path, find, replace in actions:
-        contents = path.read_text(encoding='utf8')
+        contents = path.read_text(encoding="utf8")
        contents = contents.replace(find, replace)
-        path.write_text(contents, encoding='utf8')
+        path.write_text(contents, encoding="utf8")

-    print('Files updated. If you want to update the changelog as part of this')
-    print('commit, do that now.')
+    print("Files updated. If you want to update the changelog as part of this")
+    print("commit, do that now.")
    print()

-    while input('Type "done" to continue: ').strip().lower() != 'done':
+    while input('Type "done" to continue: ').strip().lower() != "done":
        pass

-    subprocess.run([
-        'git', 'commit',
-        '-a',
-        '-m', f'Bump version: v{new_version}'
-    ], check=True)
+    subprocess.run(
+        [
+            "git",
+            "commit",
+            "--all",
+            f"--message=Bump version: v{new_version}",
+        ],
+        check=True,
+    )

-    subprocess.run([
-        'git', 'tag',
-        '-a',
-        '-m', f'v{new_version}',
-        f'v{new_version}'
-    ], check=True)
+    subprocess.run(
+        [
+            "git",
+            "tag",
+            "--annotate",
+            f"--message=v{new_version}",
+            f"v{new_version}",
+        ],
+        check=True,
+    )

-    print('Done.')
+    print("Done.")


-if __name__ == '__main__':
-    os.chdir(os.path.dirname(__file__))
-    os.chdir('..')
+if __name__ == "__main__":
+    os.chdir(Path(__file__).parent.parent.resolve())
    bump_version()
@@ -1,5 +1,7 @@
 #!/usr/bin/env python3

+from __future__ import annotations
+
 import os
 import sys
 import textwrap
@@ -15,62 +17,66 @@ def shell(cmd, **kwargs):


 def git_repo_has_changes():
-    unstaged_changes = shell('git diff-index --quiet HEAD --').returncode != 0
-    staged_changes = shell('git diff-index --quiet --cached HEAD --').returncode != 0
+    unstaged_changes = shell("git diff-index --quiet HEAD --").returncode != 0
+    staged_changes = shell("git diff-index --quiet --cached HEAD --").returncode != 0
    return unstaged_changes or staged_changes


@click.command()
 def main():
-    project_root = Path(__file__).parent / '..'
+    project_root = Path(__file__).parent / ".."
    os.chdir(project_root)

    if git_repo_has_changes():
-        print('Your git repo has uncommitted changes. Commit or stash before continuing.')
+        print("Your git repo has uncommitted changes. Commit or stash before continuing.")
        sys.exit(1)

-    previous_branch = shell('git rev-parse --abbrev-ref HEAD',
-                            check=True,
-                            capture_output=True,
-                            encoding='utf8').stdout.strip()
+    previous_branch = shell(
+        "git rev-parse --abbrev-ref HEAD", check=True, capture_output=True, encoding="utf8"
+    ).stdout.strip()

-    shell('git fetch origin', check=True)
+    shell("git fetch origin", check=True)

-    timestamp = time.strftime('%Y-%m-%dT%H-%M-%S', time.gmtime())
-    branch_name = f'update-constraints-{timestamp}'
+    timestamp = time.strftime("%Y-%m-%dT%H-%M-%S", time.gmtime())
+    branch_name = f"update-constraints-{timestamp}"

-    shell(f'git checkout -b {branch_name} origin/master', check=True)
+    shell(f"git checkout -b {branch_name} origin/master", check=True)

    try:
-        shell('bin/update_dependencies.py', check=True)
+        shell("bin/update_dependencies.py", check=True)

        if not git_repo_has_changes():
-            print('Done: no constraint updates required.')
+            print("Done: no constraint updates required.")
            return

        shell('git commit -a -m "Update dependencies"', check=True)
+        body = textwrap.dedent(
+            f"""
+            Update the versions of our dependencies.
+
+            PR generated by `{os.path.basename(__file__)}`.
+            """
+        )
        run(
            [
-                'gh', 'pr', 'create',
-                '--repo', 'joerick/cibuildwheel',
-                '--base', 'master',
-                '--title', 'Update dependencies',
-                '--body', textwrap.dedent(f'''
-                    Update the versions of our dependencies.
-
-                    PR generated by `{os.path.basename(__file__)}`.
-                ''')
+                "gh",
+                "pr",
+                "create",
+                "--repo=pypa/cibuildwheel",
+                "--base=master",
+                "--title=Update dependencies",
+                f"--body='{body}'",
            ],
-            check=True
+            check=True,
        )

-        print('Done.')
+        print("Done.")
    finally:
        # remove any local changes
-        shell('git checkout -- .')
-        shell(f'git checkout {previous_branch}', check=True)
-        shell(f'git branch -D --force {branch_name}', check=True)
+        shell("git checkout -- .")
+        shell(f"git checkout {previous_branch}", check=True)
+        shell(f"git branch -D --force {branch_name}", check=True)


-if __name__ == '__main__':
+if __name__ == "__main__":
    main.main(standalone_mode=True)
@@ -9,14 +9,17 @@ Suggested usage:
    git diff
 """

+from __future__ import annotations
+
 import builtins
 import functools
+import textwrap
 import urllib.request
 import xml.dom.minidom
 from datetime import datetime
 from io import StringIO
 from pathlib import Path
-from typing import Any, Dict, List, Optional, TextIO
+from typing import Any, TextIO

 import click
 import yaml
@@ -38,7 +41,7 @@ ICONS = (
 class Project:
    NAME: int = 0

-    def __init__(self, config: Dict[str, Any], github: Optional[Github] = None):
+    def __init__(self, config: dict[str, Any], github: Github | None = None):
        try:
            self.name: str = config["name"]
            self.gh: str = config["gh"]
@@ -48,8 +51,8 @@ class Project:

        self.stars_repo: str = config.get("stars", self.gh)
        self.notes: str = config.get("notes", "")
-        self.ci: List[str] = config.get("ci", [])
-        self.os: List[str] = config.get("os", [])
+        self.ci: list[str] = config.get("ci", [])
+        self.os: list[str] = config.get("os", [])

        self.online = github is not None
        if github is not None:
@@ -72,7 +75,7 @@ class Project:
        name_len = len(self.name) + 4
        self.__class__.NAME = max(self.__class__.NAME, name_len)

-    def __lt__(self, other: "Project") -> bool:
+    def __lt__(self, other: Project) -> bool:
        if self.online:
            return self.num_stars < other.num_stars
        else:
@@ -80,9 +83,10 @@ class Project:

    @classmethod
    def header(cls) -> str:
-        return (
-            f"| {'Name':{cls.NAME}} | CI | OS | Notes |\n"
-            f"|{'':-^{cls.NAME+2  }}|----|----|:------|"
+        return textwrap.dedent(
+            f"""\
+                | {'Name':{cls.NAME}} | CI | OS | Notes |
+                |{'':-^{cls.NAME+2  }}|----|----|:------|"""
        )

    @property
@@ -106,7 +110,7 @@ class Project:
        return " ".join(f"![{icon} icon][]" for icon in self.os)

    def table_row(self) -> str:
-        notes = self.notes.replace('\n', ' ')
+        notes = self.notes.replace("\n", " ")
        return f"| {self.namelink: <{self.NAME}} | {self.ci_icons} | {self.os_icons} | {notes} |"

    def links(self) -> str:
@@ -118,29 +122,32 @@ class Project:


 def fetch_icon(icon_name: str) -> None:
-    url = f'https://cdn.jsdelivr.net/npm/simple-icons@v4/icons/{icon_name}.svg'
+    url = f"https://cdn.jsdelivr.net/npm/simple-icons@v4/icons/{icon_name}.svg"
    with urllib.request.urlopen(url) as f:
        original_svg_data = f.read()

    document = xml.dom.minidom.parseString(original_svg_data)
    svgElement = document.documentElement
-    assert svgElement.nodeName == 'svg'
-    svgElement.setAttribute('width', '16px')
-    svgElement.setAttribute('fill', '#606060')
+    assert svgElement.nodeName == "svg"
+    svgElement.setAttribute("width", "16px")
+    svgElement.setAttribute("fill", "#606060")

    icon_path = path_for_icon(icon_name)
    icon_path.parent.mkdir(parents=True, exist_ok=True)

-    with open(path_for_icon(icon_name), 'w') as f:
+    with open(path_for_icon(icon_name), "w") as f:
        f.write(svgElement.toxml())


 def path_for_icon(icon_name: str) -> Path:
-    return Path('.') / 'docs' / 'data' / 'readme_icons' / f'{icon_name}.svg'
+    return Path(".") / "docs" / "data" / "readme_icons" / f"{icon_name}.svg"


 def str_projects(
-    config: List[Dict[str, Any]], *, online: bool = True, auth: Optional[str] = None
+    config: list[dict[str, Any]],
+    *,
+    online: bool = True,
+    auth: str | None = None,
 ) -> str:
    io = StringIO()
    print = functools.partial(builtins.print, file=io)
@@ -178,7 +185,10 @@ def str_projects(
@click.option("--auth", help="GitHub authentication token")
@click.option("--readme", type=click.File("r+"), help="Modify a readme file if given")
 def projects(
-    input: TextIO, online: bool, auth: Optional[str], readme: Optional[TextIO]
+    input: TextIO,
+    online: bool,
+    auth: str | None,
+    readme: TextIO | None,
 ) -> None:
    config = yaml.safe_load(input)
    output = str_projects(config, online=online, auth=auth)
@@ -190,7 +200,7 @@ def projects(
        start_str = "<!-- START bin/projects.py -->\n"
        start = text.find(start_str)
        end = text.find("<!-- END bin/projects.py -->\n")
-        generated_note = f'<!-- this section is generated by bin/projects.py. Don\'t edit it directly, instead, edit {input.name} -->'
+        generated_note = f"<!-- this section is generated by bin/projects.py. Don't edit it directly, instead, edit {input.name} -->"
        new_text = f"{text[:start + len(start_str)]}\n{generated_note}\n\n{output}\n{text[end:]}"

        readme.seek(0)
@@ -1,5 +1,7 @@
 #!/usr/bin/env python3

+from __future__ import annotations
+
 import os
 import shutil
 import sys
@@ -19,99 +21,98 @@ def shell(cmd, **kwargs):


 def git_repo_has_changes():
-    unstaged_changes = shell('git diff-index --quiet HEAD --').returncode != 0
-    staged_changes = shell('git diff-index --quiet --cached HEAD --').returncode != 0
+    unstaged_changes = shell("git diff-index --quiet HEAD --").returncode != 0
+    staged_changes = shell("git diff-index --quiet --cached HEAD --").returncode != 0
    return unstaged_changes or staged_changes


 def generate_basic_project(path):
-    sys.path.insert(0, '')
+    sys.path.insert(0, "")
    from test.test_projects.c import new_c_project

    project = new_c_project()
    project.generate(path)


-CIService = namedtuple('CIService', 'name dst_config_path badge_md')
+CIService = namedtuple("CIService", "name dst_config_path badge_md")
 services = [
    CIService(
-        name='appveyor',
-        dst_config_path='appveyor.yml',
-        badge_md='[![Build status](https://ci.appveyor.com/api/projects/status/wbsgxshp05tt1tif/branch/{branch}?svg=true)](https://ci.appveyor.com/project/joerick/cibuildwheel/branch/{branch})',
+        name="appveyor",
+        dst_config_path="appveyor.yml",
+        badge_md="[![Build status](https://ci.appveyor.com/api/projects/status/wbsgxshp05tt1tif/branch/{branch}?svg=true)](https://ci.appveyor.com/project/pypa/cibuildwheel/branch/{branch})",
    ),
    CIService(
-        name='azure-pipelines',
-        dst_config_path='azure-pipelines.yml',
-        badge_md='[![Build Status](https://dev.azure.com/joerick0429/cibuildwheel/_apis/build/status/joerick.cibuildwheel?branchName={branch})](https://dev.azure.com/joerick0429/cibuildwheel/_build/latest?definitionId=2&branchName={branch})',
+        name="azure-pipelines",
+        dst_config_path="azure-pipelines.yml",
+        badge_md="[![Build Status](https://dev.azure.com/joerick0429/cibuildwheel/_apis/build/status/joerick.cibuildwheel?branchName={branch})](https://dev.azure.com/joerick0429/cibuildwheel/_build/latest?definitionId=2&branchName={branch})",
    ),
    CIService(
-        name='circleci',
-        dst_config_path='.circleci/config.yml',
-        badge_md='[![CircleCI](https://circleci.com/gh/joerick/cibuildwheel/tree/{branch_escaped}.svg?style=svg)](https://circleci.com/gh/joerick/cibuildwheel/tree/{branch})',
+        name="circleci",
+        dst_config_path=".circleci/config.yml",
+        badge_md="[![CircleCI](https://circleci.com/gh/pypa/cibuildwheel/tree/{branch_escaped}.svg?style=svg)](https://circleci.com/gh/pypa/cibuildwheel/tree/{branch})",
    ),
    CIService(
-        name='github',
-        dst_config_path='.github/workflows/example.yml',
-        badge_md='[![Build](https://github.com/joerick/cibuildwheel/workflows/Build/badge.svg?branch={branch})](https://github.com/joerick/cibuildwheel/actions)',
+        name="github",
+        dst_config_path=".github/workflows/example.yml",
+        badge_md="[![Build](https://github.com/pypa/cibuildwheel/workflows/Build/badge.svg?branch={branch})](https://github.com/pypa/cibuildwheel/actions)",
    ),
    CIService(
-        name='travis-ci',
-        dst_config_path='.travis.yml',
-        badge_md='[![Build Status](https://travis-ci.org/joerick/cibuildwheel.svg?branch={branch})](https://travis-ci.org/joerick/cibuildwheel)',
+        name="travis-ci",
+        dst_config_path=".travis.yml",
+        badge_md="[![Build Status](https://travis-ci.org/pypa/cibuildwheel.svg?branch={branch})](https://travis-ci.org/pypa/cibuildwheel)",
    ),
    CIService(
-        name='gitlab',
-        dst_config_path='.gitlab-ci.yml',
-        badge_md='[![Gitlab](https://gitlab.com/joerick/cibuildwheel/badges/{branch}/pipeline.svg)](https://gitlab.com/joerick/cibuildwheel/-/commits/{branch})'
+        name="gitlab",
+        dst_config_path=".gitlab-ci.yml",
+        badge_md="[![Gitlab](https://gitlab.com/pypa/cibuildwheel/badges/{branch}/pipeline.svg)](https://gitlab.com/pypa/cibuildwheel/-/commits/{branch})",
    ),
 ]


 def ci_service_for_config_file(config_file):
-    service_name = Path(config_file).name.rsplit('-', 1)[0]
+    service_name = Path(config_file).name.rsplit("-", 1)[0]

    for service in services:
        if service.name == service_name:
            return service

-    raise ValueError(f'unknown ci service for config file {config_file}')
+    raise ValueError(f"unknown ci service for config file {config_file}")


@click.command()
-@click.argument('config_files', nargs=-1, type=click.Path())
+@click.argument("config_files", nargs=-1, type=click.Path())
 def run_example_ci_configs(config_files=None):
-    '''
-        Test the example configs. If no files are specified, will test
-        examples/*-minimal.yml
-    '''
+    """
+    Test the example configs. If no files are specified, will test
+    examples/*-minimal.yml
+    """

    if len(config_files) == 0:
-        config_files = glob('examples/*-minimal.yml')
+        config_files = glob("examples/*-minimal.yml")

    # check each CI service has at most 1 config file
    configs_by_service = {}
    for config_file in config_files:
        service = ci_service_for_config_file(config_file)
        if service.name in configs_by_service:
-            raise Exception('You cannot specify more than one config per CI service')
+            raise Exception("You cannot specify more than one config per CI service")
        configs_by_service[service.name] = config_file

    if git_repo_has_changes():
-        print('Your git repo has uncommitted changes. Commit or stash before continuing.')
+        print("Your git repo has uncommitted changes. Commit or stash before continuing.")
        sys.exit(1)

-    previous_branch = shell('git rev-parse --abbrev-ref HEAD',
-                            check=True,
-                            capture_output=True,
-                            encoding='utf8').stdout.strip()
+    previous_branch = shell(
+        "git rev-parse --abbrev-ref HEAD", check=True, capture_output=True, encoding="utf8"
+    ).stdout.strip()

-    timestamp = time.strftime('%Y-%m-%dT%H-%M-%S', time.gmtime())
-    branch_name = f'example-config-test---{previous_branch}-{timestamp}'
+    timestamp = time.strftime("%Y-%m-%dT%H-%M-%S", time.gmtime())
+    branch_name = f"example-config-test---{previous_branch}-{timestamp}"

    try:
-        shell(f'git checkout --orphan {branch_name}', check=True)
+        shell(f"git checkout --orphan {branch_name}", check=True)

-        example_project = Path('example_root')
+        example_project = Path("example_root")
        generate_basic_project(example_project)

        for config_file in config_files:
@@ -122,41 +123,46 @@ def run_example_ci_configs(config_files=None):
            dst_config_file.parent.mkdir(parents=True, exist_ok=True)
            shutil.copyfile(src_config_file, dst_config_file)

-        run(['git', 'add', example_project], check=True)
-        run(['git', 'commit', '--no-verify', '-m', textwrap.dedent(f'''
+        run(["git", "add", example_project], check=True)
+        message = textwrap.dedent(
+            f"""\
            Test example minimal configs

            Testing files: {config_files}
            Generated from branch: {previous_branch}
            Time: {timestamp}
-        ''')], check=True)
-        shell(f'git subtree --prefix={example_project} push origin {branch_name}', check=True)
+            """
+        )
+        run(["git", "commit", "--no-verify", "--message", message], check=True)
+        shell(f"git subtree --prefix={example_project} push origin {branch_name}", check=True)

-        print('---')
+        print("---")
        print()
-        print('> **Examples test run**')
-        print('> ')
-        print(f'> Branch: [{branch_name}](https://github.com/joerick/cibuildwheel/tree/{branch_name})')
-        print('> ')
-        print('> | Service | Config | Status |')
-        print('> |---|---|---|')
+        print("> **Examples test run**")
+        print("> ")
+        print(f"> Branch: [{branch_name}](https://github.com/pypa/cibuildwheel/tree/{branch_name})")
+        print("> ")
+        print("> | Service | Config | Status |")
+        print("> |---|---|---|")
        for config_file in config_files:
            service = ci_service_for_config_file(config_file)
-            badge = service.badge_md.format(branch=branch_name, branch_escaped=quote(branch_name, safe=''))
-            print(f'> | {service.name} | `{config_file}` | {badge} |')
-        print('> ')
-        print('> Generated by `bin/run_example_ci_config.py`')
+            badge = service.badge_md.format(
+                branch=branch_name, branch_escaped=quote(branch_name, safe="")
+            )
+            print(f"> | {service.name} | `{config_file}` | {badge} |")
+        print("> ")
+        print("> Generated by `bin/run_example_ci_config.py`")
        print()
-        print('---')
+        print("---")
    finally:
        # remove any local changes
        shutil.rmtree(example_project, ignore_errors=True)
-        shell('git checkout -- .')
-        shell(f'git checkout {previous_branch}', check=True)
-        shell(f'git branch -D --force {branch_name}', check=True)
+        shell("git checkout -- .")
+        shell(f"git checkout {previous_branch}", check=True)
+        shell(f"git branch -D --force {branch_name}", check=True)


-if __name__ == '__main__':
+if __name__ == "__main__":
    os.chdir(os.path.dirname(__file__))
-    os.chdir('..')
+    os.chdir("..")
    run_example_ci_configs(standalone_mode=True)
@@ -5,16 +5,19 @@ import subprocess
 import sys
 from pathlib import Path

-if __name__ == '__main__':
+if __name__ == "__main__":
    # move cwd to the project root
    os.chdir(Path(__file__).resolve().parents[1])

    # run the unit tests
-    unit_test_args = [sys.executable, '-m', 'pytest', 'unit_test']
+    unit_test_args = [sys.executable, "-m", "pytest", "unit_test"]
    # run the docker unit tests only on Linux
-    if sys.platform.startswith('linux'):
-        unit_test_args += ['--run-docker']
+    if sys.platform.startswith("linux"):
+        unit_test_args += ["--run-docker"]
    subprocess.run(unit_test_args, check=True)

    # run the integration tests
-    subprocess.run([sys.executable, '-m', 'pytest', '-x', '--durations', '0', '--timeout=2400', 'test'], check=True)
+    subprocess.run(
+        [sys.executable, "-m", "pytest", "-x", "--durations", "0", "--timeout=2400", "test"],
+        check=True,
+    )
@@ -1,5 +1,7 @@
 #!/usr/bin/env python3

+from __future__ import annotations
+
 import argparse
 import os
 import subprocess
@@ -7,19 +9,19 @@ import sys
 import tempfile
 from pathlib import Path

-if __name__ == '__main__':
+if __name__ == "__main__":
    # move cwd to the project root
    os.chdir(Path(__file__).resolve().parents[1])

-    parser = argparse.ArgumentParser(description='Runs a sample build')
-    parser.add_argument('project_python_path', nargs='?', default='test.test_0_basic.basic_project')
+    parser = argparse.ArgumentParser(description="Runs a sample build")
+    parser.add_argument("project_python_path", nargs="?", default="test.test_0_basic.basic_project")

    options = parser.parse_args()

    project_dir = tempfile.mkdtemp()
-    subprocess.run([
-        sys.executable, '-m', 'test.test_projects',
-        options.project_python_path, project_dir
-    ], check=True)
+    subprocess.run(
+        [sys.executable, "-m", "test.test_projects", options.project_python_path, project_dir],
+        check=True,
+    )

-    sys.exit(subprocess.run([sys.executable, '-m', 'cibuildwheel'], cwd=project_dir).returncode)
+    sys.exit(subprocess.run([sys.executable, "-m", "cibuildwheel"], cwd=project_dir).returncode)
@@ -1,82 +1,98 @@
 #!/usr/bin/env python3
+from __future__ import annotations

 import configparser
 import os
 import shutil
 import subprocess
 import sys
-from collections import namedtuple
+from typing import NamedTuple

 import requests

 os.chdir(os.path.dirname(__file__))
-os.chdir('..')
+os.chdir("..")

 # CUSTOM_COMPILE_COMMAND is a pip-compile option that tells users how to
 # regenerate the constraints files
-os.environ['CUSTOM_COMPILE_COMMAND'] = "bin/update_dependencies.py"
+os.environ["CUSTOM_COMPILE_COMMAND"] = "bin/update_dependencies.py"

-PYTHON_VERSIONS = ['27', '35', '36', '37', '38', '39']
+PYTHON_VERSIONS = ["27", "35", "36", "37", "38", "39"]

-if '--no-docker' in sys.argv:
+if "--no-docker" in sys.argv:
    for python_version in PYTHON_VERSIONS:
-        subprocess.run([
-            f'./env{python_version}/bin/pip-compile',
-            '--allow-unsafe',
-            '--upgrade',
-            'cibuildwheel/resources/constraints.in',
-            '--output-file', f'cibuildwheel/resources/constraints-python{python_version}.txt'
-        ], check=True)
+        subprocess.run(
+            [
+                f"./env{python_version}/bin/pip-compile",
+                "--allow-unsafe",
+                "--upgrade",
+                "cibuildwheel/resources/constraints.in",
+                f"--output-file=cibuildwheel/resources/constraints-python{python_version}.txt",
+            ],
+            check=True,
+        )
 else:
    # latest manylinux2010 image with cpython 2.7 support
-    image_runner = 'quay.io/pypa/manylinux2010_x86_64:2021-02-06-3d322a5'
-    subprocess.run(['docker', 'pull', image_runner], check=True)
+    image_runner = "quay.io/pypa/manylinux2010_x86_64:2021-02-06-3d322a5"
+    subprocess.run(["docker", "pull", image_runner], check=True)
    for python_version in PYTHON_VERSIONS:
-        abi_flags = '' if int(python_version) >= 38 else 'm'
-        python_path = f'/opt/python/cp{python_version}-cp{python_version}{abi_flags}/bin/'
-        subprocess.run([
-            'docker', 'run', '--rm',
-            '-e', 'CUSTOM_COMPILE_COMMAND',
-            '-v', f'{os.getcwd()}:/volume',
-            '--workdir', '/volume', image_runner,
-            'bash', '-c',
-            f'{python_path}pip install pip-tools &&'
-            f'{python_path}pip-compile --allow-unsafe --upgrade '
-            'cibuildwheel/resources/constraints.in '
-            f'--output-file cibuildwheel/resources/constraints-python{python_version}.txt'
-        ], check=True)
+        abi_flags = "" if int(python_version) >= 38 else "m"
+        python_path = f"/opt/python/cp{python_version}-cp{python_version}{abi_flags}/bin/"
+        command = (
+            f"{python_path}pip install pip-tools && "
+            f"{python_path}pip-compile --allow-unsafe --upgrade "
+            "cibuildwheel/resources/constraints.in "
+            f"--output-file cibuildwheel/resources/constraints-python{python_version}.txt"
+        )
+        subprocess.run(
+            [
+                "docker",
+                "run",
+                "--rm",
+                "--env=CUSTOM_COMPILE_COMMAND",
+                f"--volume={os.getcwd()}:/volume",
+                "--workdir=/volume",
+                image_runner,
+                "bash",
+                "-c",
+                command,
+            ],
+            check=True,
+        )

 # default constraints.txt
-shutil.copyfile(f'cibuildwheel/resources/constraints-python{PYTHON_VERSIONS[-1]}.txt', 'cibuildwheel/resources/constraints.txt')
+shutil.copyfile(
+    f"cibuildwheel/resources/constraints-python{PYTHON_VERSIONS[-1]}.txt",
+    "cibuildwheel/resources/constraints.txt",
+)
+
+
+class Image(NamedTuple):
+    manylinux_version: str
+    platform: str
+    image_name: str
+    tag: str | None

-Image = namedtuple('Image', [
-    'manylinux_version',
-    'platform',
-    'image_name',
-    'tag',
-])

 images = [
-    Image('manylinux1', 'x86_64', 'quay.io/pypa/manylinux1_x86_64', None),
-    Image('manylinux1', 'i686', 'quay.io/pypa/manylinux1_i686', None),
-
+    Image("manylinux1", "x86_64", "quay.io/pypa/manylinux1_x86_64", None),
+    Image("manylinux1", "i686", "quay.io/pypa/manylinux1_i686", None),
    # Images for manylinux2010 are pinned to the latest tag supporting cp27
-    Image('manylinux2010', 'x86_64', 'quay.io/pypa/manylinux2010_x86_64', '2021-02-06-3d322a5'),
-    Image('manylinux2010', 'i686', 'quay.io/pypa/manylinux2010_i686', '2021-02-06-3d322a5'),
-
-    Image('manylinux2010', 'pypy_x86_64', 'pypywheels/manylinux2010-pypy_x86_64', None),
-
-    Image('manylinux2014', 'x86_64', 'quay.io/pypa/manylinux2014_x86_64', None),
-    Image('manylinux2014', 'i686', 'quay.io/pypa/manylinux2014_i686', None),
-    Image('manylinux2014', 'aarch64', 'quay.io/pypa/manylinux2014_aarch64', None),
-    Image('manylinux2014', 'ppc64le', 'quay.io/pypa/manylinux2014_ppc64le', None),
-    Image('manylinux2014', 's390x', 'quay.io/pypa/manylinux2014_s390x', None),
-
-    Image('manylinux_2_24', 'x86_64', 'quay.io/pypa/manylinux_2_24_x86_64', None),
-    Image('manylinux_2_24', 'i686', 'quay.io/pypa/manylinux_2_24_i686', None),
-    Image('manylinux_2_24', 'aarch64', 'quay.io/pypa/manylinux_2_24_aarch64', None),
-    Image('manylinux_2_24', 'ppc64le', 'quay.io/pypa/manylinux_2_24_ppc64le', None),
-    Image('manylinux_2_24', 's390x', 'quay.io/pypa/manylinux_2_24_s390x', None),
+    Image("manylinux2010", "x86_64", "quay.io/pypa/manylinux2010_x86_64", "2021-02-06-3d322a5"),
+    Image("manylinux2010", "i686", "quay.io/pypa/manylinux2010_i686", "2021-02-06-3d322a5"),
+    Image("manylinux2010", "pypy_x86_64", "pypywheels/manylinux2010-pypy_x86_64", None),
+    # 2014 images
+    Image("manylinux2014", "x86_64", "quay.io/pypa/manylinux2014_x86_64", None),
+    Image("manylinux2014", "i686", "quay.io/pypa/manylinux2014_i686", None),
+    Image("manylinux2014", "aarch64", "quay.io/pypa/manylinux2014_aarch64", None),
+    Image("manylinux2014", "ppc64le", "quay.io/pypa/manylinux2014_ppc64le", None),
+    Image("manylinux2014", "s390x", "quay.io/pypa/manylinux2014_s390x", None),
+    # 2_24 images
+    Image("manylinux_2_24", "x86_64", "quay.io/pypa/manylinux_2_24_x86_64", None),
+    Image("manylinux_2_24", "i686", "quay.io/pypa/manylinux_2_24_i686", None),
+    Image("manylinux_2_24", "aarch64", "quay.io/pypa/manylinux_2_24_aarch64", None),
+    Image("manylinux_2_24", "ppc64le", "quay.io/pypa/manylinux_2_24_ppc64le", None),
+    Image("manylinux_2_24", "s390x", "quay.io/pypa/manylinux_2_24_s390x", None),
 ]

 config = configparser.ConfigParser()
@@ -86,47 +102,41 @@ for image in images:
    if image.tag is not None:
        # image has been pinned, do not update
        tag_name = image.tag
-    elif image.image_name.startswith('quay.io/'):
-        _, _, repository_name = image.image_name.partition('/')
+    elif image.image_name.startswith("quay.io/"):
+        _, _, repository_name = image.image_name.partition("/")
        response = requests.get(
-            f'https://quay.io/api/v1/repository/{repository_name}?includeTags=true'
+            f"https://quay.io/api/v1/repository/{repository_name}?includeTags=true"
        )
        response.raise_for_status()
        repo_info = response.json()
-        tags_dict = repo_info['tags']
+        tags_dict = repo_info["tags"]

-        latest_tag = tags_dict.pop('latest')
+        latest_tag = tags_dict.pop("latest")
        # find the tag whose manifest matches 'latest'
        tag_name = next(
            name
            for (name, info) in tags_dict.items()
-            if info['manifest_digest'] == latest_tag['manifest_digest']
+            if info["manifest_digest"] == latest_tag["manifest_digest"]
        )
    else:
-        response = requests.get(
-            f'https://hub.docker.com/v2/repositories/{image.image_name}/tags'
-        )
+        response = requests.get(f"https://hub.docker.com/v2/repositories/{image.image_name}/tags")
        response.raise_for_status()
-        tags = response.json()['results']
+        tags = response.json()["results"]

-        latest_tag = next(
-            tag for tag in tags if tag['name'] == 'latest'
-        )
+        latest_tag = next(tag for tag in tags if tag["name"] == "latest")
        # i don't know what it would mean to have multiple images per tag
-        assert len(latest_tag['images']) == 1
-        digest = latest_tag['images'][0]['digest']
+        assert len(latest_tag["images"]) == 1
+        digest = latest_tag["images"][0]["digest"]

        pinned_tag = next(
-            tag
-            for tag in tags
-            if tag != latest_tag and tag['images'][0]['digest'] == digest
+            tag for tag in tags if tag != latest_tag and tag["images"][0]["digest"] == digest
        )
-        tag_name = pinned_tag['name']
+        tag_name = pinned_tag["name"]

    if not config.has_section(image.platform):
        config[image.platform] = {}

-    config[image.platform][image.manylinux_version] = f'{image.image_name}:{tag_name}'
+    config[image.platform][image.manylinux_version] = f"{image.image_name}:{tag_name}"

-with open('cibuildwheel/resources/pinned_docker_images.cfg', 'w') as f:
+with open("cibuildwheel/resources/pinned_docker_images.cfg", "w") as f:
    config.write(f)
@@ -1,10 +1,12 @@
 #!/usr/bin/env python3

+from __future__ import annotations
+
 import copy
 import difflib
 import logging
 from pathlib import Path
-from typing import Dict, Optional, Union
+from typing import Union

 import click
 import requests
@@ -80,7 +82,7 @@ class WindowsVersions:
        versions = (Version(v) for v in cp_info["versions"])
        self.versions = sorted(v for v in versions if not v.is_devrelease)

-    def update_version_windows(self, spec: Specifier) -> Optional[ConfigWinCP]:
+    def update_version_windows(self, spec: Specifier) -> ConfigWinCP | None:
        versions = sorted(v for v in self.versions if spec.contains(v))
        if not all(v.is_prerelease for v in versions):
            versions = [v for v in versions if not v.is_prerelease]
@@ -91,12 +93,11 @@ class WindowsVersions:

        version = versions[-1]
        identifier = f"cp{version.major}{version.minor}-{self.arch}"
-        result = ConfigWinCP(
+        return ConfigWinCP(
            identifier=identifier,
            version=str(version),
            arch=self.arch_str,
        )
-        return result


 class PyPyVersions:
@@ -111,7 +112,9 @@ class PyPyVersions:
            release["python_version"] = Version(release["python_version"])

        self.releases = [
-            r for r in releases if not r["pypy_version"].is_prerelease and not r["pypy_version"].is_devrelease
+            r
+            for r in releases
+            if not r["pypy_version"].is_prerelease and not r["pypy_version"].is_devrelease
        ]
        self.arch = arch_str

@@ -153,7 +156,9 @@ class PyPyVersions:
        identifier = f"pp{version.major}{version.minor}-macosx_x86_64"

        (url,) = [
-            rf["download_url"] for rf in release["files"] if "" in rf["platform"] == "darwin" and rf["arch"] == "x64"
+            rf["download_url"]
+            for rf in release["files"]
+            if "" in rf["platform"] == "darwin" and rf["arch"] == "x64"
        ]

        return ConfigMacOS(
@@ -166,12 +171,14 @@ class PyPyVersions:
 class CPythonVersions:
    def __init__(self) -> None:

-        response = requests.get("https://www.python.org/api/v2/downloads/release/?is_published=true")
+        response = requests.get(
+            "https://www.python.org/api/v2/downloads/release/?is_published=true"
+        )
        response.raise_for_status()

        releases_info = response.json()

-        self.versions_dict: Dict[Version, int] = {}
+        self.versions_dict: dict[Version, int] = {}
        for release in releases_info:
            # Removing the prefix, Python 3.9 would use: release["name"].removeprefix("Python ")
            version = Version(release["name"][7:])
@@ -180,14 +187,16 @@ class CPythonVersions:
                uri = int(release["resource_uri"].rstrip("/").split("/")[-1])
                self.versions_dict[version] = uri

-    def update_version_macos(self, identifier: str, spec: Specifier) -> Optional[ConfigMacOS]:
-        file_idents = ("macos11.0.pkg", "macosx10.9.pkg", "macosx10.6.pkg")
+    def update_version_macos(self, identifier: str, spec: Specifier) -> ConfigMacOS | None:
+        file_idents = ("macos11.pkg", "macosx10.9.pkg", "macosx10.6.pkg")
        sorted_versions = sorted(v for v in self.versions_dict if spec.contains(v))

        for version in reversed(sorted_versions):
            # Find the first patch version that contains the requested file
            uri = self.versions_dict[version]
-            response = requests.get(f"https://www.python.org/api/v2/downloads/release_file/?release={uri}")
+            response = requests.get(
+                f"https://www.python.org/api/v2/downloads/release_file/?release={uri}"
+            )
            response.raise_for_status()
            file_info = response.json()

@@ -216,13 +225,13 @@ class AllVersions:
        self.macos_cpython = CPythonVersions()
        self.macos_pypy = PyPyVersions("64")

-    def update_config(self, config: Dict[str, str]) -> None:
+    def update_config(self, config: dict[str, str]) -> None:
        identifier = config["identifier"]
        version = Version(config["version"])
        spec = Specifier(f"=={version.major}.{version.minor}.*")
        log.info(f"Reading in '{identifier}' -> {spec} @ {version}")
        orig_config = copy.copy(config)
-        config_update: Optional[AnyConfig]
+        config_update: AnyConfig | None

        # We need to use ** in update due to MyPy (probably a bug)
        if "macos" in identifier:
@@ -251,7 +260,9 @@ class AllVersions:

@click.command()
@click.option("--force", is_flag=True)
-@click.option("--level", default="INFO", type=click.Choice(["INFO", "DEBUG", "TRACE"], case_sensitive=False))
+@click.option(
+    "--level", default="INFO", type=click.Choice(["INFO", "DEBUG", "TRACE"], case_sensitive=False)
+)
 def update_pythons(force: bool, level: str) -> None:

    logging.basicConfig(
@@ -1 +1 @@
-__version__ = '1.10.0'
+__version__ = "1.12.0"
@@ -30,11 +30,23 @@ from cibuildwheel.util import (


@overload
-def get_option_from_environment(option_name: str, *, platform: Optional[str] = None, default: str) -> str: ...  # noqa: E704
+def get_option_from_environment(
+    option_name: str, *, platform: Optional[str] = None, default: str
+) -> str:
+    ...  # noqa: E704
+
+
@overload
-def get_option_from_environment(option_name: str, *, platform: Optional[str] = None, default: None = None) -> Optional[str]: ...  # noqa: E704 E302
-def get_option_from_environment(option_name: str, *, platform: Optional[str] = None, default: Optional[str] = None) -> Optional[str]:  # noqa: E302
-    '''
+def get_option_from_environment(
+    option_name: str, *, platform: Optional[str] = None, default: None = None
+) -> Optional[str]:
+    ...  # noqa: E704 E302
+
+
+def get_option_from_environment(
+    option_name: str, *, platform: Optional[str] = None, default: Optional[str] = None
+) -> Optional[str]:  # noqa: E302
+    """
    Returns an option from the environment, optionally scoped by the platform.

    Example:
@@ -42,9 +54,9 @@ def get_option_from_environment(option_name: str, *, platform: Optional[str] = N

      This will return the value of CIBW_COLOR_MACOS if it exists, otherwise the value of
      CIBW_COLOR.
-    '''
+    """
    if platform:
-        option = os.environ.get(f'{option_name}_{platform.upper()}')
+        option = os.environ.get(f"{option_name}_{platform.upper()}")
        if option is not None:
            return option

@@ -55,124 +67,164 @@ def main() -> None:
    platform: PlatformName

    parser = argparse.ArgumentParser(
-        description='Build wheels for all the platforms.',
-        epilog='''
+        description="Build wheels for all the platforms.",
+        epilog="""
            Most options are supplied via environment variables.
-            See https://github.com/joerick/cibuildwheel#options for info.
-        ''')
+            See https://github.com/pypa/cibuildwheel#options for info.
+        """,
+    )

-    parser.add_argument('--platform',
-                        choices=['auto', 'linux', 'macos', 'windows'],
-                        default=os.environ.get('CIBW_PLATFORM', 'auto'),
-                        help='''
-                            Platform to build for. For "linux" you need docker running, on Mac
-                            or Linux. For "macos", you need a Mac machine, and note that this
-                            script is going to automatically install MacPython on your system,
-                            so don't run on your development machine. For "windows", you need to
-                            run in Windows, and it will build and test for all versions of
-                            Python. Default: auto.
-                        ''')
+    parser.add_argument(
+        "--platform",
+        choices=["auto", "linux", "macos", "windows"],
+        default=os.environ.get("CIBW_PLATFORM", "auto"),
+        help="""
+            Platform to build for. For "linux" you need docker running, on Mac
+            or Linux. For "macos", you need a Mac machine, and note that this
+            script is going to automatically install MacPython on your system,
+            so don't run on your development machine. For "windows", you need to
+            run in Windows, and it will build and test for all versions of
+            Python. Default: auto.
+        """,
+    )

-    parser.add_argument('--archs',
-                        default=None,
-                        help='''
-                            Comma-separated list of CPU architectures to build for.
-                            When set to 'auto', builds the architectures natively supported
-                            on this machine. Set this option to build an architecture
-                            via emulation, for example, using binfmt_misc and QEMU.
-                            Default: auto.
-                            Choices: auto, auto64, auto32, native, all, {}
-                        '''.format(", ".join(a.name for a in Architecture)))
-    parser.add_argument('--output-dir',
-                        default=os.environ.get('CIBW_OUTPUT_DIR', 'wheelhouse'),
-                        help='Destination folder for the wheels.')
-    parser.add_argument('package_dir',
-                        default='.',
-                        nargs='?',
-                        help='''
-                            Path to the package that you want wheels for. Must be a subdirectory of
-                            the working directory. When set, the working directory is still
-                            considered the 'project' and is copied into the Docker container on
-                            Linux. Default: the working directory.
-                        ''')
+    arch_list_str = ", ".join(a.name for a in Architecture)
+    parser.add_argument(
+        "--archs",
+        default=None,
+        help=f"""
+            Comma-separated list of CPU architectures to build for.
+            When set to 'auto', builds the architectures natively supported
+            on this machine. Set this option to build an architecture
+            via emulation, for example, using binfmt_misc and QEMU.
+            Default: auto.
+            Choices: auto, auto64, auto32, native, all, {arch_list_str}
+        """,
+    )

-    parser.add_argument('--print-build-identifiers',
-                        action='store_true',
-                        help='Print the build identifiers matched by the current invocation and exit.')
-    parser.add_argument('--allow-empty',
-                        action='store_true',
-                        help='Do not report an error code if the build does not match any wheels.')
+    parser.add_argument(
+        "--output-dir",
+        default=os.environ.get("CIBW_OUTPUT_DIR", "wheelhouse"),
+        help="Destination folder for the wheels.",
+    )
+
+    parser.add_argument(
+        "package_dir",
+        default=".",
+        nargs="?",
+        help="""
+            Path to the package that you want wheels for. Must be a subdirectory of
+            the working directory. When set, the working directory is still
+            considered the 'project' and is copied into the Docker container on
+            Linux. Default: the working directory.
+        """,
+    )
+
+    parser.add_argument(
+        "--print-build-identifiers",
+        action="store_true",
+        help="Print the build identifiers matched by the current invocation and exit.",
+    )
+
+    parser.add_argument(
+        "--allow-empty",
+        action="store_true",
+        help="Do not report an error code if the build does not match any wheels.",
+    )

    args = parser.parse_args()

    detect_obsolete_options()

-    if args.platform != 'auto':
+    if args.platform != "auto":
        platform = args.platform
    else:
        ci_provider = detect_ci_provider()
        if ci_provider is None:
-            print(textwrap.dedent('''
-                cibuildwheel: Unable to detect platform. cibuildwheel should run on your CI server;
-                Travis CI, AppVeyor, Azure Pipelines, GitHub Actions, CircleCI, and Gitlab are
-                supported. You can run on your development machine or other CI providers using the
-                --platform argument. Check --help output for more information.
-            '''), file=sys.stderr)
+            print(
+                textwrap.dedent(
+                    """
+                    cibuildwheel: Unable to detect platform. cibuildwheel should run on your CI server;
+                    Travis CI, AppVeyor, Azure Pipelines, GitHub Actions, CircleCI, and Gitlab are
+                    supported. You can run on your development machine or other CI providers using the
+                    --platform argument. Check --help output for more information.
+                    """
+                ),
+                file=sys.stderr,
+            )
            sys.exit(2)
-        if sys.platform.startswith('linux'):
-            platform = 'linux'
-        elif sys.platform == 'darwin':
-            platform = 'macos'
-        elif sys.platform == 'win32':
-            platform = 'windows'
+        if sys.platform.startswith("linux"):
+            platform = "linux"
+        elif sys.platform == "darwin":
+            platform = "macos"
+        elif sys.platform == "win32":
+            platform = "windows"
        else:
-            print('cibuildwheel: Unable to detect platform from "sys.platform" in a CI environment. You can run '
-                  'cibuildwheel using the --platform argument. Check --help output for more information.',
-                  file=sys.stderr)
+            print(
+                'cibuildwheel: Unable to detect platform from "sys.platform" in a CI environment. You can run '
+                "cibuildwheel using the --platform argument. Check --help output for more information.",
+                file=sys.stderr,
+            )
            sys.exit(2)

    if platform not in PLATFORMS:
-        print(f'cibuildwheel: Unsupported platform: {platform}', file=sys.stderr)
+        print(f"cibuildwheel: Unsupported platform: {platform}", file=sys.stderr)
        sys.exit(2)

    package_dir = Path(args.package_dir)
    output_dir = Path(args.output_dir)

-    if platform == 'linux':
-        repair_command_default = 'auditwheel repair -w {dest_dir} {wheel}'
-    elif platform == 'macos':
-        repair_command_default = 'delocate-listdeps {wheel} && delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}'
-    elif platform == 'windows':
-        repair_command_default = ''
+    if platform == "linux":
+        repair_command_default = "auditwheel repair -w {dest_dir} {wheel}"
+    elif platform == "macos":
+        repair_command_default = "delocate-listdeps {wheel} && delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}"
+    elif platform == "windows":
+        repair_command_default = ""
    else:
        assert_never(platform)

-    build_config = os.environ.get('CIBW_BUILD') or '*'
-    skip_config = os.environ.get('CIBW_SKIP', '')
-    test_skip = os.environ.get('CIBW_TEST_SKIP', '')
-    environment_config = get_option_from_environment('CIBW_ENVIRONMENT', platform=platform, default='')
-    before_all = get_option_from_environment('CIBW_BEFORE_ALL', platform=platform, default='')
-    before_build = get_option_from_environment('CIBW_BEFORE_BUILD', platform=platform)
-    repair_command = get_option_from_environment('CIBW_REPAIR_WHEEL_COMMAND', platform=platform, default=repair_command_default)
-    dependency_versions = get_option_from_environment('CIBW_DEPENDENCY_VERSIONS', platform=platform, default='pinned')
-    test_command = get_option_from_environment('CIBW_TEST_COMMAND', platform=platform)
-    before_test = get_option_from_environment('CIBW_BEFORE_TEST', platform=platform)
-    test_requires = get_option_from_environment('CIBW_TEST_REQUIRES', platform=platform, default='').split()
-    test_extras = get_option_from_environment('CIBW_TEST_EXTRAS', platform=platform, default='')
-    build_verbosity_str = get_option_from_environment('CIBW_BUILD_VERBOSITY', platform=platform, default='')
+    build_config = os.environ.get("CIBW_BUILD") or "*"
+    skip_config = os.environ.get("CIBW_SKIP", "")
+    test_skip = os.environ.get("CIBW_TEST_SKIP", "")
+    environment_config = get_option_from_environment(
+        "CIBW_ENVIRONMENT", platform=platform, default=""
+    )
+    before_all = get_option_from_environment("CIBW_BEFORE_ALL", platform=platform, default="")
+    before_build = get_option_from_environment("CIBW_BEFORE_BUILD", platform=platform)
+    repair_command = get_option_from_environment(
+        "CIBW_REPAIR_WHEEL_COMMAND", platform=platform, default=repair_command_default
+    )
+    dependency_versions = get_option_from_environment(
+        "CIBW_DEPENDENCY_VERSIONS", platform=platform, default="pinned"
+    )
+    test_command = get_option_from_environment("CIBW_TEST_COMMAND", platform=platform)
+    before_test = get_option_from_environment("CIBW_BEFORE_TEST", platform=platform)
+    test_requires = get_option_from_environment(
+        "CIBW_TEST_REQUIRES", platform=platform, default=""
+    ).split()
+    test_extras = get_option_from_environment("CIBW_TEST_EXTRAS", platform=platform, default="")
+    build_verbosity_str = get_option_from_environment(
+        "CIBW_BUILD_VERBOSITY", platform=platform, default=""
+    )

-    package_files = {'setup.py', 'setup.cfg', 'pyproject.toml'}
+    package_files = {"setup.py", "setup.cfg", "pyproject.toml"}

    if not any(package_dir.joinpath(name).exists() for name in package_files):
-        names = ', '.join(sorted(package_files, reverse=True))
-        print(f'cibuildwheel: Could not find any of {{{names}}} at root of package', file=sys.stderr)
+        names = ", ".join(sorted(package_files, reverse=True))
+        print(
+            f"cibuildwheel: Could not find any of {{{names}}} at root of package", file=sys.stderr
+        )
        sys.exit(2)

    # Passing this in as an environment variable will override pyproject.toml, setup.cfg, or setup.py
-    requires_python_str: Optional[str] = os.environ.get('CIBW_PROJECT_REQUIRES_PYTHON') or get_requires_python_str(package_dir)
+    requires_python_str: Optional[str] = os.environ.get(
+        "CIBW_PROJECT_REQUIRES_PYTHON"
+    ) or get_requires_python_str(package_dir)
    requires_python = None if requires_python_str is None else SpecifierSet(requires_python_str)

-    build_selector = BuildSelector(build_config=build_config, skip_config=skip_config, requires_python=requires_python)
+    build_selector = BuildSelector(
+        build_config=build_config, skip_config=skip_config, requires_python=requires_python
+    )
    test_selector = TestSelector(skip_config=test_skip)

    try:
@@ -182,16 +234,18 @@ def main() -> None:
        traceback.print_exc(None, sys.stderr)
        sys.exit(2)

-    if dependency_versions == 'pinned':
-        dependency_constraints: Optional[DependencyConstraints] = DependencyConstraints.with_defaults()
-    elif dependency_versions == 'latest':
+    if dependency_versions == "pinned":
+        dependency_constraints: Optional[
+            DependencyConstraints
+        ] = DependencyConstraints.with_defaults()
+    elif dependency_versions == "latest":
        dependency_constraints = None
    else:
        dependency_versions_path = Path(dependency_versions)
        dependency_constraints = DependencyConstraints(dependency_versions_path)

    if test_extras:
-        test_extras = f'[{test_extras}]'
+        test_extras = f"[{test_extras}]"

    try:
        build_verbosity = min(3, max(-3, int(build_verbosity_str)))
@@ -200,12 +254,14 @@ def main() -> None:

    # Add CIBUILDWHEEL environment variable
    # This needs to be passed on to the docker container in linux.py
-    os.environ['CIBUILDWHEEL'] = '1'
+    os.environ["CIBUILDWHEEL"] = "1"

    if args.archs is not None:
        archs_config_str = args.archs
    else:
-        archs_config_str = get_option_from_environment('CIBW_ARCHS', platform=platform, default='auto')
+        archs_config_str = get_option_from_environment(
+            "CIBW_ARCHS", platform=platform, default="auto"
+        )

    archs = Architecture.parse_config(archs_config_str, platform=platform)

@@ -217,8 +273,8 @@ def main() -> None:
        sys.exit(0)

    manylinux_images: Optional[Dict[str, str]] = None
-    if platform == 'linux':
-        pinned_docker_images_file = resources_dir / 'pinned_docker_images.cfg'
+    if platform == "linux":
+        pinned_docker_images_file = resources_dir / "pinned_docker_images.cfg"
        all_pinned_docker_images = ConfigParser()
        all_pinned_docker_images.read(pinned_docker_images_file)
        # all_pinned_docker_images looks like a dict of dicts, e.g.
@@ -229,15 +285,15 @@ def main() -> None:

        manylinux_images = {}

-        for build_platform in ['x86_64', 'i686', 'pypy_x86_64', 'aarch64', 'ppc64le', 's390x']:
+        for build_platform in ["x86_64", "i686", "pypy_x86_64", "aarch64", "ppc64le", "s390x"]:
            pinned_images = all_pinned_docker_images[build_platform]

-            config_name = f'CIBW_MANYLINUX_{build_platform.upper()}_IMAGE'
+            config_name = f"CIBW_MANYLINUX_{build_platform.upper()}_IMAGE"
            config_value = os.environ.get(config_name)

            if config_value is None:
                # default to manylinux2010 if it's available, otherwise manylinux2014
-                image = pinned_images.get('manylinux2010') or pinned_images.get('manylinux2014')
+                image = pinned_images.get("manylinux2010") or pinned_images.get("manylinux2014")
            elif config_value in pinned_images:
                image = pinned_images[config_value]
            else:
@@ -276,19 +332,21 @@ def main() -> None:
        sys.exit(4)

    if not identifiers:
-        print(f'cibuildwheel: No build identifiers selected: {build_selector}', file=sys.stderr)
+        print(f"cibuildwheel: No build identifiers selected: {build_selector}", file=sys.stderr)
        if not args.allow_empty:
            sys.exit(3)

    if not output_dir.exists():
        output_dir.mkdir(parents=True)

-    with cibuildwheel.util.print_new_wheels("\n{n} wheels produced in {m:.0f} minutes:", output_dir):
-        if platform == 'linux':
+    with cibuildwheel.util.print_new_wheels(
+        "\n{n} wheels produced in {m:.0f} minutes:", output_dir
+    ):
+        if platform == "linux":
            cibuildwheel.linux.build(build_options)
-        elif platform == 'windows':
+        elif platform == "windows":
            cibuildwheel.windows.build(build_options)
-        elif platform == 'macos':
+        elif platform == "macos":
            cibuildwheel.macos.build(build_options)
        else:
            assert_never(platform)
@@ -296,10 +354,14 @@ def main() -> None:

 def detect_obsolete_options() -> None:
    # Check the old 'MANYLINUX1_*_IMAGE' options
-    for (deprecated, alternative) in [('CIBW_MANYLINUX1_X86_64_IMAGE', 'CIBW_MANYLINUX_X86_64_IMAGE'),
-                                      ('CIBW_MANYLINUX1_I686_IMAGE', 'CIBW_MANYLINUX_I686_IMAGE')]:
+    for (deprecated, alternative) in [
+        ("CIBW_MANYLINUX1_X86_64_IMAGE", "CIBW_MANYLINUX_X86_64_IMAGE"),
+        ("CIBW_MANYLINUX1_I686_IMAGE", "CIBW_MANYLINUX_I686_IMAGE"),
+    ]:
        if deprecated in os.environ:
-            print(f"'{deprecated}' has been deprecated, and will be removed in a future release. Use the option '{alternative}' instead.")
+            print(
+                f"'{deprecated}' has been deprecated, and will be removed in a future release. Use the option '{alternative}' instead."
+            )
            if alternative not in os.environ:
                print(f"Using value of option '{deprecated}' as replacement for '{alternative}'")
                os.environ[alternative] = os.environ[deprecated]
@@ -308,52 +370,68 @@ def detect_obsolete_options() -> None:
                sys.exit(2)

    # Check for deprecated identifiers in 'CIBW_BUILD' and 'CIBW_SKIP' options
-    for option in ['CIBW_BUILD', 'CIBW_SKIP']:
-        for deprecated, alternative in [('manylinux1', 'manylinux'),
-                                        ('macosx_10_6_intel', 'macosx_x86_64'),
-                                        ('macosx_10_9_x86_64', 'macosx_x86_64')]:
+    for option in ["CIBW_BUILD", "CIBW_SKIP"]:
+        for deprecated, alternative in [
+            ("manylinux1", "manylinux"),
+            ("macosx_10_6_intel", "macosx_x86_64"),
+            ("macosx_10_9_x86_64", "macosx_x86_64"),
+        ]:
            if option in os.environ and deprecated in os.environ[option]:
-                print(f"Build identifiers with '{deprecated}' have been deprecated. Replacing all occurences of '{deprecated}' with '{alternative}' in the option '{option}'")
+                print(
+                    f"Build identifiers with '{deprecated}' have been deprecated. Replacing all occurences of '{deprecated}' with '{alternative}' in the option '{option}'"
+                )
                os.environ[option] = os.environ[option].replace(deprecated, alternative)


 def print_preamble(platform: str, build_options: BuildOptions) -> None:
-    print(textwrap.dedent('''
-             _ _       _ _   _       _           _
-         ___|_| |_ _ _|_| |_| |_ _ _| |_ ___ ___| |
-        |  _| | . | | | | | . | | | |   | -_| -_| |
-        |___|_|___|___|_|_|___|_____|_|_|___|___|_|
-        '''))
+    print(
+        textwrap.dedent(
+            """
+                 _ _       _ _   _       _           _
+             ___|_| |_ _ _|_| |_| |_ _ _| |_ ___ ___| |
+            |  _| | . | | | | | . | | | |   | -_| -_| |
+            |___|_|___|___|_|_|___|_____|_|_|___|___|_|
+            """
+        )
+    )

-    print(f'cibuildwheel version {cibuildwheel.__version__}\n')
+    print(f"cibuildwheel version {cibuildwheel.__version__}\n")

-    print('Build options:')
-    print(f'  platform: {platform!r}')
+    print("Build options:")
+    print(f"  platform: {platform!r}")
    for option, value in sorted(build_options._asdict().items()):
-        print(f'  {option}: {value!r}')
+        print(f"  {option}: {value!r}")

    warnings = detect_warnings(platform, build_options)
    if warnings:
-        print('\nWarnings:')
+        print("\nWarnings:")
        for warning in warnings:
-            print('  ' + warning)
+            print("  " + warning)

-    print('\nHere we go!\n')
+    print("\nHere we go!\n")


 def get_build_identifiers(
    platform: PlatformName, build_selector: BuildSelector, architectures: Set[Architecture]
 ) -> List[str]:
-    python_configurations: Union[List[cibuildwheel.linux.PythonConfiguration],
-                                 List[cibuildwheel.windows.PythonConfiguration],
-                                 List[cibuildwheel.macos.PythonConfiguration]]
+    python_configurations: Union[
+        List[cibuildwheel.linux.PythonConfiguration],
+        List[cibuildwheel.windows.PythonConfiguration],
+        List[cibuildwheel.macos.PythonConfiguration],
+    ]

-    if platform == 'linux':
-        python_configurations = cibuildwheel.linux.get_python_configurations(build_selector, architectures)
-    elif platform == 'windows':
-        python_configurations = cibuildwheel.windows.get_python_configurations(build_selector, architectures)
-    elif platform == 'macos':
-        python_configurations = cibuildwheel.macos.get_python_configurations(build_selector, architectures)
+    if platform == "linux":
+        python_configurations = cibuildwheel.linux.get_python_configurations(
+            build_selector, architectures
+        )
+    elif platform == "windows":
+        python_configurations = cibuildwheel.windows.get_python_configurations(
+            build_selector, architectures
+        )
+    elif platform == "macos":
+        python_configurations = cibuildwheel.macos.get_python_configurations(
+            build_selector, architectures
+        )
    else:
        assert_never(platform)

@@ -364,15 +442,19 @@ def detect_warnings(platform: str, build_options: BuildOptions) -> List[str]:
    warnings = []

    # warn about deprecated {python} and {pip}
-    for option_name in ['test_command', 'before_build']:
+    for option_name in ["test_command", "before_build"]:
        option_value = getattr(build_options, option_name)

-        if option_value:
-            if '{python}' in option_value or '{pip}' in option_value:
-                warnings.append(option_name + ": '{python}' and '{pip}' are no longer needed, and will be removed in a future release. Simply use 'python' or 'pip' instead.")
+        if option_value and ("{python}" in option_value or "{pip}" in option_value):
+            # Reminder: in an f-string, double braces means literal single brace
+            msg = (
+                f"{option_name}: '{{python}}' and '{{pip}}' are no longer needed, "
+                "and will be removed in a future release. Simply use 'python' or 'pip' instead."
+            )
+            warnings.append(msg)

    return warnings


-if __name__ == '__main__':
+if __name__ == "__main__":
    main()
@@ -6,7 +6,7 @@ from typing import Set

 from .typing import Literal, PlatformName, assert_never

-PRETTY_NAMES = {'linux': 'Linux', 'macos': 'macOS', 'windows': 'Windows'}
+PRETTY_NAMES = {"linux": "Linux", "macos": "macOS", "windows": "Windows"}


@functools.total_ordering
@@ -14,81 +14,87 @@ class Architecture(Enum):
    value: str

    # mac/linux archs
-    x86_64 = 'x86_64'
+    x86_64 = "x86_64"

    # linux archs
-    i686 = 'i686'
-    aarch64 = 'aarch64'
-    ppc64le = 'ppc64le'
-    s390x = 's390x'
+    i686 = "i686"
+    aarch64 = "aarch64"
+    ppc64le = "ppc64le"
+    s390x = "s390x"

    # mac archs
-    universal2 = 'universal2'
-    arm64 = 'arm64'
+    universal2 = "universal2"
+    arm64 = "arm64"

    # windows archs
-    x86 = 'x86'
-    AMD64 = 'AMD64'
+    x86 = "x86"
+    AMD64 = "AMD64"

    # Allow this to be sorted
    def __lt__(self, other: "Architecture") -> bool:
        return self.value < other.value

    @staticmethod
-    def parse_config(config: str, platform: PlatformName) -> 'Set[Architecture]':
+    def parse_config(config: str, platform: PlatformName) -> "Set[Architecture]":
        result = set()
-        for arch_str in re.split(r'[\s,]+', config):
-            if arch_str == 'auto':
+        for arch_str in re.split(r"[\s,]+", config):
+            if arch_str == "auto":
                result |= Architecture.auto_archs(platform=platform)
-            elif arch_str == 'native':
+            elif arch_str == "native":
                result.add(Architecture(platform_module.machine()))
-            elif arch_str == 'all':
+            elif arch_str == "all":
                result |= Architecture.all_archs(platform=platform)
-            elif arch_str == 'auto64':
+            elif arch_str == "auto64":
                result |= Architecture.bitness_archs(platform=platform, bitness="64")
-            elif arch_str == 'auto32':
+            elif arch_str == "auto32":
                result |= Architecture.bitness_archs(platform=platform, bitness="32")
            else:
                result.add(Architecture(arch_str))
        return result

    @staticmethod
-    def auto_archs(platform: PlatformName) -> 'Set[Architecture]':
+    def auto_archs(platform: PlatformName) -> "Set[Architecture]":
        native_architecture = Architecture(platform_module.machine())
        result = {native_architecture}

-        if platform == 'linux' and native_architecture == Architecture.x86_64:
+        if platform == "linux" and native_architecture == Architecture.x86_64:
            # x86_64 machines can run i686 docker containers
            result.add(Architecture.i686)

-        if platform == 'windows' and native_architecture == Architecture.AMD64:
+        if platform == "windows" and native_architecture == Architecture.AMD64:
            result.add(Architecture.x86)

-        if platform == 'macos' and native_architecture == Architecture.arm64:
+        if platform == "macos" and native_architecture == Architecture.arm64:
            # arm64 can build and test both archs of a universal2 wheel.
            result.add(Architecture.universal2)

        return result

    @staticmethod
-    def all_archs(platform: PlatformName) -> 'Set[Architecture]':
-        if platform == 'linux':
-            return {Architecture.x86_64, Architecture.i686, Architecture.aarch64, Architecture.ppc64le, Architecture.s390x}
-        elif platform == 'macos':
+    def all_archs(platform: PlatformName) -> "Set[Architecture]":
+        if platform == "linux":
+            return {
+                Architecture.x86_64,
+                Architecture.i686,
+                Architecture.aarch64,
+                Architecture.ppc64le,
+                Architecture.s390x,
+            }
+        elif platform == "macos":
            return {Architecture.x86_64, Architecture.arm64, Architecture.universal2}
-        elif platform == 'windows':
+        elif platform == "windows":
            return {Architecture.x86, Architecture.AMD64}
        else:
            assert_never(platform)

    @staticmethod
-    def bitness_archs(platform: PlatformName, bitness: Literal['64', '32']) -> 'Set[Architecture]':
+    def bitness_archs(platform: PlatformName, bitness: Literal["64", "32"]) -> "Set[Architecture]":
        archs_32 = {Architecture.i686, Architecture.x86}
        auto_archs = Architecture.auto_archs(platform)

-        if bitness == '64':
+        if bitness == "64":
            return auto_archs - archs_32
-        elif bitness == '32':
+        elif bitness == "32":
            return auto_archs & archs_32
        else:
            assert_never(bitness)
@@ -101,15 +107,15 @@ def allowed_architectures_check(

    allowed_architectures = Architecture.all_archs(platform)

-    msg = f'{PRETTY_NAMES[platform]} only supports {sorted(allowed_architectures)} at the moment.'
+    msg = f"{PRETTY_NAMES[platform]} only supports {sorted(allowed_architectures)} at the moment."

-    if platform != 'linux':
-        msg += ' If you want to set emulation architectures on Linux, use CIBW_ARCHS_LINUX instead.'
+    if platform != "linux":
+        msg += " If you want to set emulation architectures on Linux, use CIBW_ARCHS_LINUX instead."

    if not architectures <= allowed_architectures:
-        msg = f'Invalid archs option {architectures}. ' + msg
+        msg = f"Invalid archs option {architectures}. " + msg
        raise ValueError(msg)

    if not architectures:
-        msg = 'Empty archs option set. ' + msg
+        msg = "Empty archs option set. " + msg
        raise ValueError(msg)
@@ -8,7 +8,9 @@ EnvironmentExecutor = Callable[[List[str], Dict[str, str]], str]


 def local_environment_executor(command: List[str], env: Dict[str, str]) -> str:
-    return subprocess.run(command, env=env, universal_newlines=True, stdout=subprocess.PIPE, check=True).stdout
+    return subprocess.run(
+        command, env=env, universal_newlines=True, stdout=subprocess.PIPE, check=True
+    ).stdout


 class NodeExecutionContext(NamedTuple):
@@ -17,11 +19,13 @@ class NodeExecutionContext(NamedTuple):
    executor: EnvironmentExecutor


-def evaluate(value: str, environment: Dict[str, str], executor: Optional[EnvironmentExecutor] = None) -> str:
+def evaluate(
+    value: str, environment: Dict[str, str], executor: Optional[EnvironmentExecutor] = None
+) -> str:
    if not value:
        # empty string evaluates to empty string
        # (but trips up bashlex)
-        return ''
+        return ""

    command_node = bashlex.parsesingle(value)

@@ -32,18 +36,20 @@ def evaluate(value: str, environment: Dict[str, str], executor: Optional[Environ

    return evaluate_node(
        value_word_node,
-        context=NodeExecutionContext(environment=environment, input=value, executor=executor or local_environment_executor)
+        context=NodeExecutionContext(
+            environment=environment, input=value, executor=executor or local_environment_executor
+        ),
    )


 def evaluate_node(node: bashlex.ast.node, context: NodeExecutionContext) -> str:
-    if node.kind == 'word':
+    if node.kind == "word":
        return evaluate_word_node(node, context=context)
-    elif node.kind == 'commandsubstitution':
+    elif node.kind == "commandsubstitution":
        node_result = evaluate_command_node(node.command, context=context)
        # bash removes training newlines in command substitution
        return node_result.rstrip()
-    elif node.kind == 'parameter':
+    elif node.kind == "parameter":
        return evaluate_parameter_node(node, context=context)
    else:
        raise ValueError(f'Unsupported bash construct: "{node.kind}"')
@@ -53,14 +59,13 @@ def evaluate_word_node(node: bashlex.ast.node, context: NodeExecutionContext) ->
    value: str = node.word

    for part in node.parts:
-        part_string = context.input[part.pos[0]:part.pos[1]]
+        part_string = context.input[part.pos[0] : part.pos[1]]
        part_value = evaluate_node(part, context=context)

        if part_string not in value:
            raise RuntimeError(
-                'bash parse failed. part "{}" not found in "{}". Word was "{}". Full input was "{}"'.format(
-                    part_string, value, node.word, context.input,
-                )
+                f'bash parse failed. part "{part_string}" not found in "{value}". '
+                f'Word was "{node.word}". Full input was "{context.input}"'
            )

        value = value.replace(part_string, part_value, 1)
@@ -69,25 +74,25 @@ def evaluate_word_node(node: bashlex.ast.node, context: NodeExecutionContext) ->


 def evaluate_command_node(node: bashlex.ast.node, context: NodeExecutionContext) -> str:
-    if any(n.kind == 'operator' for n in node.parts):
+    if any(n.kind == "operator" for n in node.parts):
        return evaluate_nodes_as_compound_command(node.parts, context=context)
    else:
        return evaluate_nodes_as_simple_command(node.parts, context=context)


-def evaluate_nodes_as_compound_command(nodes: Sequence[bashlex.ast.node], context: NodeExecutionContext) -> str:
+def evaluate_nodes_as_compound_command(
+    nodes: Sequence[bashlex.ast.node], context: NodeExecutionContext
+) -> str:
    # bashlex doesn't support any operators besides ';' inside command
    # substitutions, so we only need to handle that case. We do so assuming
    # that `set -o errexit` is on, because it's easier to code!

-    result = ''
+    result = ""
    for node in nodes:
-        if node.kind == 'command':
+        if node.kind == "command":
            result += evaluate_command_node(node, context=context)
-        elif node.kind == 'operator':
-            if node.op == ';':
-                pass
-            else:
+        elif node.kind == "operator":
+            if node.op != ";":
                raise ValueError(f'Unsupported bash operator: "{node.op}"')
        else:
            raise ValueError(f'Unsupported bash node in compound command: "{node.kind}"')
@@ -95,10 +100,12 @@ def evaluate_nodes_as_compound_command(nodes: Sequence[bashlex.ast.node], contex
    return result


-def evaluate_nodes_as_simple_command(nodes: List[bashlex.ast.node], context: NodeExecutionContext) -> str:
+def evaluate_nodes_as_simple_command(
+    nodes: List[bashlex.ast.node], context: NodeExecutionContext
+) -> str:
    command = [evaluate_node(part, context=context) for part in nodes]
    return context.executor(command, context.environment)


 def evaluate_parameter_node(node: bashlex.ast.node, context: NodeExecutionContext) -> str:
-    return context.environment.get(node.value, '')
+    return context.environment.get(node.value, "")
@@ -13,7 +13,7 @@ from .typing import PathOrStr, PopenBytes


 class DockerContainer:
-    '''
+    """
    An object that represents a running Docker container.

    Intended for use as a context manager e.g.
@@ -22,14 +22,17 @@ class DockerContainer:
    A bash shell is running in the remote container. When `call()` is invoked,
    the command is relayed to the remote shell, and the results are streamed
    back to cibuildwheel.
-    '''
-    UTILITY_PYTHON = '/opt/python/cp38-cp38/bin/python'
+    """
+
+    UTILITY_PYTHON = "/opt/python/cp38-cp38/bin/python"

    process: PopenBytes
    bash_stdin: IO[bytes]
    bash_stdout: IO[bytes]

-    def __init__(self, docker_image: str, simulate_32_bit: bool = False, cwd: Optional[PathOrStr] = None):
+    def __init__(
+        self, docker_image: str, simulate_32_bit: bool = False, cwd: Optional[PathOrStr] = None
+    ):
        if not docker_image:
            raise ValueError("Must have a non-empty docker image to run.")

@@ -38,27 +41,30 @@ class DockerContainer:
        self.cwd = cwd
        self.name: Optional[str] = None

-    def __enter__(self) -> 'DockerContainer':
-        self.name = f'cibuildwheel-{uuid.uuid4()}'
-        cwd_args = ['-w', str(self.cwd)] if self.cwd else []
-        shell_args = ['linux32', '/bin/bash'] if self.simulate_32_bit else ['/bin/bash']
+    def __enter__(self) -> "DockerContainer":
+        self.name = f"cibuildwheel-{uuid.uuid4()}"
+        cwd_args = ["-w", str(self.cwd)] if self.cwd else []
+        shell_args = ["linux32", "/bin/bash"] if self.simulate_32_bit else ["/bin/bash"]
        subprocess.run(
            [
-                'docker', 'create',
-                '--env', 'CIBUILDWHEEL',
-                '--name', self.name,
-                '-i',
-                '-v', '/:/host',  # ignored on CircleCI
+                "docker",
+                "create",
+                "--env=CIBUILDWHEEL",
+                f"--name={self.name}",
+                "--interactive",
+                "--volume=/:/host",  # ignored on CircleCI
                *cwd_args,
                self.docker_image,
-                *shell_args
+                *shell_args,
            ],
            check=True,
        )
        self.process = subprocess.Popen(
            [
-                'docker', 'start',
-                '--attach', '--interactive',
+                "docker",
+                "start",
+                "--attach",
+                "--interactive",
                self.name,
            ],
            stdin=subprocess.PIPE,
@@ -70,15 +76,16 @@ class DockerContainer:
        self.bash_stdout = self.process.stdout

        # run a noop command to block until the container is responding
-        self.call(['/bin/true'])
+        self.call(["/bin/true"])

        return self

    def __exit__(
-            self,
-            exc_type: Optional[Type[BaseException]],
-            exc_val: Optional[BaseException],
-            exc_tb: Optional[TracebackType]) -> None:
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> None:

        self.bash_stdin.close()
        self.process.terminate()
@@ -86,7 +93,7 @@ class DockerContainer:

        assert isinstance(self.name, str)

-        subprocess.run(['docker', 'rm', '--force', '-v', self.name], stdout=subprocess.DEVNULL)
+        subprocess.run(["docker", "rm", "--force", "-v", self.name], stdout=subprocess.DEVNULL)
        self.name = None

    def copy_into(self, from_path: Path, to_path: PurePath) -> None:
@@ -96,55 +103,66 @@ class DockerContainer:
        # Use `docker exec` instead.

        if from_path.is_dir():
-            self.call(['mkdir', '-p', to_path])
+            self.call(["mkdir", "-p", to_path])
            subprocess.run(
-                f'tar cf - . | docker exec -i {self.name} tar -xC {shell_quote(to_path)} -f -',
+                f"tar cf - . | docker exec -i {self.name} tar -xC {shell_quote(to_path)} -f -",
                shell=True,
                check=True,
-                cwd=from_path)
+                cwd=from_path,
+            )
        else:
            subprocess.run(
                f'cat {shell_quote(from_path)} | docker exec -i {self.name} sh -c "cat > {shell_quote(to_path)}"',
                shell=True,
-                check=True)
+                check=True,
+            )

    def copy_out(self, from_path: PurePath, to_path: Path) -> None:
        # note: we assume from_path is a dir
        to_path.mkdir(parents=True, exist_ok=True)

        subprocess.run(
-            f'docker exec -i {self.name} tar -cC {shell_quote(from_path)} -f - . | tar -xf -',
+            f"docker exec -i {self.name} tar -cC {shell_quote(from_path)} -f - . | tar -xf -",
            shell=True,
            check=True,
-            cwd=to_path
+            cwd=to_path,
        )

    def glob(self, path: PurePath, pattern: str) -> List[PurePath]:
        glob_pattern = os.path.join(str(path), pattern)

-        path_strs = json.loads(self.call([
-            self.UTILITY_PYTHON,
-            '-c',
-            f'import sys, json, glob; json.dump(glob.glob({glob_pattern!r}), sys.stdout)'
-        ], capture_output=True))
+        path_strs = json.loads(
+            self.call(
+                [
+                    self.UTILITY_PYTHON,
+                    "-c",
+                    f"import sys, json, glob; json.dump(glob.glob({glob_pattern!r}), sys.stdout)",
+                ],
+                capture_output=True,
+            )
+        )

        return [PurePath(p) for p in path_strs]

    def call(
-            self,
-            args: Sequence[PathOrStr],
-            env: Optional[Dict[str, str]] = None,
-            capture_output: bool = False,
-            cwd: Optional[PathOrStr] = None) -> str:
+        self,
+        args: Sequence[PathOrStr],
+        env: Optional[Dict[str, str]] = None,
+        capture_output: bool = False,
+        cwd: Optional[PathOrStr] = None,
+    ) -> str:

-        chdir = f'cd {cwd}' if cwd else ''
-        env_assignments = ' '.join(f'{shlex.quote(k)}={shlex.quote(v)}'
-                                   for k, v in env.items()) if env is not None else ''
-        command = ' '.join(shlex.quote(str(a)) for a in args)
+        chdir = f"cd {cwd}" if cwd else ""
+        env_assignments = (
+            " ".join(f"{shlex.quote(k)}={shlex.quote(v)}" for k, v in env.items())
+            if env is not None
+            else ""
+        )
+        command = " ".join(shlex.quote(str(a)) for a in args)
        end_of_message = str(uuid.uuid4())

        # log the command we're executing
-        print(f'    + {command}')
+        print(f"    + {command}")

        # Write a command to the remote shell. First we change the
        # cwd, if that's required. Then, we use the `env` utility to run
@@ -153,12 +171,18 @@ class DockerContainer:
        # Finally, the remote shell is told to write a footer - this will show
        # up in the output so we know when to stop reading, and will include
        # the returncode of `command`.
-        self.bash_stdin.write(bytes(f'''(
+        self.bash_stdin.write(
+            bytes(
+                f"""(
            {chdir}
            env {env_assignments} {command}
            printf "%04d%s\n" $? {end_of_message}
        )
-        ''', encoding='utf8', errors='surrogateescape'))
+        """,
+                encoding="utf8",
+                errors="surrogateescape",
+            )
+        )
        self.bash_stdin.flush()

        if capture_output:
@@ -169,14 +193,16 @@ class DockerContainer:
        while True:
            line = self.bash_stdout.readline()

-            if line.endswith(b'%s\n' % (bytes(end_of_message, encoding='utf8'))):
+            if line.endswith(bytes(end_of_message, encoding="utf8") + b"\n"):
+                # fmt: off
                footer_offset = (
                    len(line)
                    - 1  # newline character
                    - len(end_of_message)  # delimiter
                    - 4  # 4 returncode decimals
                )
-                returncode_str = line[footer_offset:footer_offset+4]
+                # fmt: on
+                returncode_str = line[footer_offset : footer_offset + 4]
                returncode = int(returncode_str)
                # add the last line to output, without the footer
                output_io.write(line[0:footer_offset])
@@ -185,9 +211,9 @@ class DockerContainer:
                output_io.write(line)

        if isinstance(output_io, io.BytesIO):
-            output = str(output_io.getvalue(), encoding='utf8', errors='surrogateescape')
+            output = str(output_io.getvalue(), encoding="utf8", errors="surrogateescape")
        else:
-            output = ''
+            output = ""

        if returncode != 0:
            raise subprocess.CalledProcessError(returncode, args, output)
@@ -195,11 +221,16 @@ class DockerContainer:
        return output

    def get_environment(self) -> Dict[str, str]:
-        env = json.loads(self.call([
-            self.UTILITY_PYTHON,
-            '-c',
-            'import sys, json, os; json.dump(os.environ.copy(), sys.stdout)'
-        ], capture_output=True))
+        env = json.loads(
+            self.call(
+                [
+                    self.UTILITY_PYTHON,
+                    "-c",
+                    "import sys, json, os; json.dump(os.environ.copy(), sys.stdout)",
+                ],
+                capture_output=True,
+            )
+        )
        return cast(Dict[str, str], env)

    def environment_executor(self, command: List[str], environment: Dict[str, str]) -> str:
@@ -10,7 +10,7 @@ class EnvironmentParseError(Exception):


 def split_env_items(env_string: str) -> List[str]:
-    '''Splits space-separated variable assignments into a list of individual assignments.
+    """Splits space-separated variable assignments into a list of individual assignments.

    >>> split_env_items('VAR=abc')
    ['VAR=abc']
@@ -24,7 +24,7 @@ def split_env_items(env_string: str) -> List[str]:
    ['PATH="$PATH;/opt/cibw_test_path"']
    >>> split_env_items('PATH2="something with spaces"')
    ['PATH2="something with spaces"']
-    '''
+    """
    if not env_string:
        return []

@@ -32,7 +32,7 @@ def split_env_items(env_string: str) -> List[str]:
    result = []

    for word_node in command_node.parts:
-        part_string = env_string[word_node.pos[0]:word_node.pos[1]]
+        part_string = env_string[word_node.pos[0] : word_node.pos[1]]
        result.append(part_string)

    return result
@@ -40,30 +40,36 @@ def split_env_items(env_string: str) -> List[str]:

 class EnvironmentAssignment:
    def __init__(self, assignment: str):
-        name, equals, value = assignment.partition('=')
+        name, equals, value = assignment.partition("=")
        if not equals:
            raise EnvironmentParseError(assignment)
        self.name = name
        self.value = value

-    def evaluated_value(self, environment: Dict[str, str], executor: Optional[bashlex_eval.EnvironmentExecutor] = None) -> str:
-        '''Returns the value of this assignment, as evaluated in the environment'''
+    def evaluated_value(
+        self,
+        environment: Dict[str, str],
+        executor: Optional[bashlex_eval.EnvironmentExecutor] = None,
+    ) -> str:
+        """Returns the value of this assignment, as evaluated in the environment"""
        return bashlex_eval.evaluate(self.value, environment=environment, executor=executor)

    def as_shell_assignment(self) -> str:
-        return f'export {self.name}={self.value}'
+        return f"export {self.name}={self.value}"

    def __repr__(self) -> str:
-        return f'{self.name}={self.value}'
+        return f"{self.name}={self.value}"


 class ParsedEnvironment:
    def __init__(self, assignments: List[EnvironmentAssignment]):
        self.assignments = assignments

-    def as_dictionary(self,
-                      prev_environment: Mapping[str, str],
-                      executor: Optional[bashlex_eval.EnvironmentExecutor] = None) -> Dict[str, str]:
+    def as_dictionary(
+        self,
+        prev_environment: Mapping[str, str],
+        executor: Optional[bashlex_eval.EnvironmentExecutor] = None,
+    ) -> Dict[str, str]:
        environment = dict(**prev_environment)

        for assignment in self.assignments:
@@ -76,7 +82,7 @@ class ParsedEnvironment:
        return [a.as_shell_assignment() for a in self.assignments]

    def __repr__(self) -> str:
-        return f'ParsedEnvironment({[repr(a) for a in self.assignments]!r})'
+        return f"ParsedEnvironment({[repr(a) for a in self.assignments]!r})"


 def parse_environment(env_string: str) -> ParsedEnvironment:
@@ -14,11 +14,10 @@ class InlineArrayDictEncoder(toml.encoder.TomlEncoder):  # type: ignore
        self.dump_funcs[Version] = lambda v: f'"{v}"'

    def dump_sections(self, o: Dict[str, Any], sup: str) -> Any:
-        if all(isinstance(a, list) for a in o.values()):
-            val = ""
-            for k, v in o.items():
-                inner = ",\n  ".join(self.dump_inline_table(d_i).strip() for d_i in v)
-                val += f"{k} = [\n  {inner},\n]\n"
-            return val, self._dict()
-        else:
+        if not all(isinstance(a, list) for a in o.values()):
            return super().dump_sections(o, sup)
+        val = ""
+        for k, v in o.items():
+            inner = ",\n  ".join(self.dump_inline_table(d_i).strip() for d_i in v)
+            val += f"{k} = [\n  {inner},\n]\n"
+        return val, self._dict()
@@ -31,17 +31,18 @@ class PythonConfiguration(NamedTuple):

 def get_python_configurations(
    build_selector: BuildSelector,
-    architectures: Set[Architecture]
+    architectures: Set[Architecture],
 ) -> List[PythonConfiguration]:

-    full_python_configs = read_python_configs('linux')
+    full_python_configs = read_python_configs("linux")

    python_configurations = [PythonConfiguration(**item) for item in full_python_configs]

    # return all configurations whose arch is in our `architectures` set,
    # and match the build/skip rules
    return [
-        c for c in python_configurations
+        c
+        for c in python_configurations
        if any(c.identifier.endswith(arch.value) for arch in architectures)
        and build_selector(c.identifier)
    ]
@@ -50,56 +51,72 @@ def get_python_configurations(
 def build(options: BuildOptions) -> None:
    try:
        # check docker is installed
-        subprocess.run(['docker', '--version'], check=True, stdout=subprocess.DEVNULL)
+        subprocess.run(["docker", "--version"], check=True, stdout=subprocess.DEVNULL)
    except Exception:
-        print('cibuildwheel: Docker not found. Docker is required to run Linux builds. '
-              'If you\'re building on Travis CI, add `services: [docker]` to your .travis.yml.'
-              'If you\'re building on Circle CI in Linux, add a `setup_remote_docker` step to your .circleci/config.yml',
-              file=sys.stderr)
+        print(
+            "cibuildwheel: Docker not found. Docker is required to run Linux builds. "
+            "If you're building on Travis CI, add `services: [docker]` to your .travis.yml."
+            "If you're building on Circle CI in Linux, add a `setup_remote_docker` step to your .circleci/config.yml",
+            file=sys.stderr,
+        )
        sys.exit(2)

    assert options.manylinux_images is not None
    python_configurations = get_python_configurations(options.build_selector, options.architectures)
    platforms = [
-        ('cp', 'manylinux_x86_64', options.manylinux_images['x86_64']),
-        ('cp', 'manylinux_i686', options.manylinux_images['i686']),
-        ('cp', 'manylinux_aarch64', options.manylinux_images['aarch64']),
-        ('cp', 'manylinux_ppc64le', options.manylinux_images['ppc64le']),
-        ('cp', 'manylinux_s390x', options.manylinux_images['s390x']),
-        ('pp', 'manylinux_x86_64', options.manylinux_images['pypy_x86_64']),
+        ("cp", "manylinux_x86_64", options.manylinux_images["x86_64"]),
+        ("cp", "manylinux_i686", options.manylinux_images["i686"]),
+        ("cp", "manylinux_aarch64", options.manylinux_images["aarch64"]),
+        ("cp", "manylinux_ppc64le", options.manylinux_images["ppc64le"]),
+        ("cp", "manylinux_s390x", options.manylinux_images["s390x"]),
+        ("pp", "manylinux_x86_64", options.manylinux_images["pypy_x86_64"]),
    ]

    cwd = Path.cwd()
    abs_package_dir = options.package_dir.resolve()
    if cwd != abs_package_dir and cwd not in abs_package_dir.parents:
-        raise Exception('package_dir must be inside the working directory')
+        raise Exception("package_dir must be inside the working directory")

-    container_project_path = PurePath('/project')
+    container_project_path = PurePath("/project")
    container_package_dir = container_project_path / abs_package_dir.relative_to(cwd)
-    container_output_dir = PurePath('/output')
+    container_output_dir = PurePath("/output")

    for implementation, platform_tag, docker_image in platforms:
-        platform_configs = [c for c in python_configurations if c.identifier.startswith(implementation) and c.identifier.endswith(platform_tag)]
+        platform_configs = [
+            c
+            for c in python_configurations
+            if c.identifier.startswith(implementation) and c.identifier.endswith(platform_tag)
+        ]
        if not platform_configs:
            continue

        try:
-            log.step(f'Starting Docker image {docker_image}...')
-            with DockerContainer(docker_image, simulate_32_bit=platform_tag.endswith('i686'), cwd=container_project_path) as docker:
+            log.step(f"Starting Docker image {docker_image}...")
+            with DockerContainer(
+                docker_image,
+                simulate_32_bit=platform_tag.endswith("i686"),
+                cwd=container_project_path,
+            ) as docker:

-                log.step('Copying project into Docker...')
+                log.step("Copying project into Docker...")
                docker.copy_into(Path.cwd(), container_project_path)

                if options.before_all:
-                    log.step('Running before_all...')
+                    log.step("Running before_all...")

                    env = docker.get_environment()
-                    env['PATH'] = f'/opt/python/cp38-cp38/bin:{env["PATH"]}'
-                    env['PIP_DISABLE_PIP_VERSION_CHECK'] = '1'
-                    env = options.environment.as_dictionary(env, executor=docker.environment_executor)
+                    env["PATH"] = f'/opt/python/cp38-cp38/bin:{env["PATH"]}'
+                    env["PIP_DISABLE_PIP_VERSION_CHECK"] = "1"
+                    env = options.environment.as_dictionary(
+                        env, executor=docker.environment_executor
+                    )

-                    before_all_prepared = prepare_command(options.before_all, project=container_project_path, package=container_package_dir)
-                    docker.call(['sh', '-c', before_all_prepared], env=env)
+                    before_all_prepared = prepare_command(
+                        options.before_all,
+                        project=container_project_path,
+                        package=container_package_dir,
+                    )
+                    docker.call(["sh", "-c", before_all_prepared], env=env)

                for config in platform_configs:
                    log.build_start(config.identifier)
@@ -107,97 +124,141 @@ def build(options: BuildOptions) -> None:
                    dependency_constraint_flags: List[PathOrStr] = []
                    if config.identifier.startswith("pp"):
                        # Patch PyPy to make sure headers get installed into a venv
-                        patch_version = '_27' if config.version == '2.7' else ''
-                        patch_path = resources_dir / f'pypy_venv{patch_version}.patch'
-                        patch_docker_path = PurePath('/pypy_venv.patch')
+                        patch_version = "_27" if config.version == "2.7" else ""
+                        patch_path = resources_dir / f"pypy_venv{patch_version}.patch"
+                        patch_docker_path = PurePath("/pypy_venv.patch")
                        docker.copy_into(patch_path, patch_docker_path)
                        try:
-                            docker.call(['patch', '--force', '-p1', '-d', config.path, '-i', patch_docker_path])
+                            docker.call(
+                                [
+                                    "patch",
+                                    "--force",
+                                    "-p1",
+                                    "-d",
+                                    config.path,
+                                    "-i",
+                                    patch_docker_path,
+                                ]
+                            )
                        except subprocess.CalledProcessError:
                            print("PyPy patch not applied", file=sys.stderr)

                    if options.dependency_constraints:
-                        constraints_file = options.dependency_constraints.get_for_python_version(config.version)
-                        container_constraints_file = PurePath('/constraints.txt')
+                        constraints_file = options.dependency_constraints.get_for_python_version(
+                            config.version
+                        )
+                        container_constraints_file = PurePath("/constraints.txt")

                        docker.copy_into(constraints_file, container_constraints_file)
-                        dependency_constraint_flags = ['-c', container_constraints_file]
+                        dependency_constraint_flags = ["-c", container_constraints_file]

-                    log.step('Setting up build environment...')
+                    log.step("Setting up build environment...")

                    env = docker.get_environment()

                    # put this config's python top of the list
-                    python_bin = config.path / 'bin'
-                    env['PATH'] = f'{python_bin}:{env["PATH"]}'
+                    python_bin = config.path / "bin"
+                    env["PATH"] = f'{python_bin}:{env["PATH"]}'

-                    env = options.environment.as_dictionary(env, executor=docker.environment_executor)
+                    env = options.environment.as_dictionary(
+                        env, executor=docker.environment_executor
+                    )

                    # check config python and pip are still on PATH
-                    which_python = docker.call(['which', 'python'], env=env, capture_output=True).strip()
-                    if PurePath(which_python) != python_bin / 'python':
-                        print("cibuildwheel: python available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert python above it.", file=sys.stderr)
+                    which_python = docker.call(
+                        ["which", "python"], env=env, capture_output=True
+                    ).strip()
+                    if PurePath(which_python) != python_bin / "python":
+                        print(
+                            "cibuildwheel: python available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert python above it.",
+                            file=sys.stderr,
+                        )
                        sys.exit(1)

-                    which_pip = docker.call(['which', 'pip'], env=env, capture_output=True).strip()
-                    if PurePath(which_pip) != python_bin / 'pip':
-                        print("cibuildwheel: pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it.", file=sys.stderr)
+                    which_pip = docker.call(["which", "pip"], env=env, capture_output=True).strip()
+                    if PurePath(which_pip) != python_bin / "pip":
+                        print(
+                            "cibuildwheel: pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it.",
+                            file=sys.stderr,
+                        )
                        sys.exit(1)

                    if options.before_build:
-                        log.step('Running before_build...')
-                        before_build_prepared = prepare_command(options.before_build, project=container_project_path, package=container_package_dir)
-                        docker.call(['sh', '-c', before_build_prepared], env=env)
+                        log.step("Running before_build...")
+                        before_build_prepared = prepare_command(
+                            options.before_build,
+                            project=container_project_path,
+                            package=container_package_dir,
+                        )
+                        docker.call(["sh", "-c", before_build_prepared], env=env)

-                    log.step('Building wheel...')
+                    log.step("Building wheel...")

-                    temp_dir = PurePath('/tmp/cibuildwheel')
-                    built_wheel_dir = temp_dir / 'built_wheel'
-                    docker.call(['rm', '-rf', built_wheel_dir])
-                    docker.call(['mkdir', '-p', built_wheel_dir])
+                    temp_dir = PurePath("/tmp/cibuildwheel")
+                    built_wheel_dir = temp_dir / "built_wheel"
+                    docker.call(["rm", "-rf", built_wheel_dir])
+                    docker.call(["mkdir", "-p", built_wheel_dir])

-                    docker.call([
-                        'pip', 'wheel',
-                        container_package_dir,
-                        '-w', built_wheel_dir,
-                        '--no-deps',
-                        *get_build_verbosity_extra_flags(options.build_verbosity)
-                    ], env=env)
+                    docker.call(
+                        [
+                            "pip",
+                            "wheel",
+                            container_package_dir,
+                            "--wheel-dir",
+                            built_wheel_dir,
+                            "--no-deps",
+                            *get_build_verbosity_extra_flags(options.build_verbosity),
+                        ],
+                        env=env,
+                    )

-                    built_wheel = docker.glob(built_wheel_dir, '*.whl')[0]
+                    built_wheel = docker.glob(built_wheel_dir, "*.whl")[0]

-                    repaired_wheel_dir = temp_dir / 'repaired_wheel'
-                    docker.call(['rm', '-rf', repaired_wheel_dir])
-                    docker.call(['mkdir', '-p', repaired_wheel_dir])
+                    repaired_wheel_dir = temp_dir / "repaired_wheel"
+                    docker.call(["rm", "-rf", repaired_wheel_dir])
+                    docker.call(["mkdir", "-p", repaired_wheel_dir])

-                    if built_wheel.name.endswith('none-any.whl'):
+                    if built_wheel.name.endswith("none-any.whl"):
                        raise NonPlatformWheelError()

                    if options.repair_command:
-                        log.step('Repairing wheel...')
-                        repair_command_prepared = prepare_command(options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir)
-                        docker.call(['sh', '-c', repair_command_prepared], env=env)
+                        log.step("Repairing wheel...")
+                        repair_command_prepared = prepare_command(
+                            options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir
+                        )
+                        docker.call(["sh", "-c", repair_command_prepared], env=env)
                    else:
-                        docker.call(['mv', built_wheel, repaired_wheel_dir])
+                        docker.call(["mv", built_wheel, repaired_wheel_dir])

-                    repaired_wheels = docker.glob(repaired_wheel_dir, '*.whl')
+                    repaired_wheels = docker.glob(repaired_wheel_dir, "*.whl")

                    if options.test_command and options.test_selector(config.identifier):
-                        log.step('Testing wheel...')
+                        log.step("Testing wheel...")

                        # set up a virtual environment to install and test from, to make sure
                        # there are no dependencies that were pulled in at build time.
-                        docker.call(['pip', 'install', 'virtualenv', *dependency_constraint_flags], env=env)
-                        venv_dir = PurePath(docker.call(['mktemp', '-d'], capture_output=True).strip()) / 'venv'
+                        docker.call(
+                            ["pip", "install", "virtualenv", *dependency_constraint_flags], env=env
+                        )
+                        venv_dir = (
+                            PurePath(docker.call(["mktemp", "-d"], capture_output=True).strip())
+                            / "venv"
+                        )

-                        docker.call(['python', '-m', 'virtualenv', '--no-download', venv_dir], env=env)
+                        docker.call(
+                            ["python", "-m", "virtualenv", "--no-download", venv_dir], env=env
+                        )

                        virtualenv_env = env.copy()
-                        virtualenv_env['PATH'] = f"{venv_dir / 'bin'}:{virtualenv_env['PATH']}"
+                        virtualenv_env["PATH"] = f"{venv_dir / 'bin'}:{virtualenv_env['PATH']}"

                        if options.before_test:
-                            before_test_prepared = prepare_command(options.before_test, project=container_project_path, package=container_package_dir)
-                            docker.call(['sh', '-c', before_test_prepared], env=virtualenv_env)
+                            before_test_prepared = prepare_command(
+                                options.before_test,
+                                project=container_project_path,
+                                package=container_package_dir,
+                            )
+                            docker.call(["sh", "-c", before_test_prepared], env=virtualenv_env)

                        # Install the wheel we just built
                        # Note: If auditwheel produced two wheels, it's because the earlier produced wheel
@@ -206,52 +267,70 @@ def build(options: BuildOptions) -> None:
                        # different external shared libraries. so it doesn't matter which one we run the tests on.
                        # Let's just pick the first one.
                        wheel_to_test = repaired_wheels[0]
-                        docker.call(['pip', 'install', str(wheel_to_test) + options.test_extras], env=virtualenv_env)
+                        docker.call(
+                            ["pip", "install", str(wheel_to_test) + options.test_extras],
+                            env=virtualenv_env,
+                        )

                        # Install any requirements to run the tests
                        if options.test_requires:
-                            docker.call(['pip', 'install', *options.test_requires], env=virtualenv_env)
+                            docker.call(
+                                ["pip", "install", *options.test_requires], env=virtualenv_env
+                            )

                        # Run the tests from a different directory
-                        test_command_prepared = prepare_command(options.test_command, project=container_project_path, package=container_package_dir)
-                        docker.call(['sh', '-c', test_command_prepared], cwd='/root', env=virtualenv_env)
+                        test_command_prepared = prepare_command(
+                            options.test_command,
+                            project=container_project_path,
+                            package=container_package_dir,
+                        )
+                        docker.call(
+                            ["sh", "-c", test_command_prepared], cwd="/root", env=virtualenv_env
+                        )

                        # clean up test environment
-                        docker.call(['rm', '-rf', venv_dir])
+                        docker.call(["rm", "-rf", venv_dir])

                    # move repaired wheels to output
-                    docker.call(['mkdir', '-p', container_output_dir])
-                    docker.call(['mv', *repaired_wheels, container_output_dir])
+                    docker.call(["mkdir", "-p", container_output_dir])
+                    docker.call(["mv", *repaired_wheels, container_output_dir])

                    log.build_end()

-                log.step('Copying wheels back to host...')
+                log.step("Copying wheels back to host...")
                # copy the output back into the host
                docker.copy_out(container_output_dir, options.output_dir)
                log.step_end()
        except subprocess.CalledProcessError as error:
-            log.step_end_with_error(f'Command {error.cmd} failed with code {error.returncode}. {error.stdout}')
+            log.step_end_with_error(
+                f"Command {error.cmd} failed with code {error.returncode}. {error.stdout}"
+            )
            troubleshoot(options.package_dir, error)
            sys.exit(1)


 def troubleshoot(package_dir: Path, error: Exception) -> None:
-    if (isinstance(error, subprocess.CalledProcessError) and error.cmd[0:2] == ['pip', 'wheel']):
+    if isinstance(error, subprocess.CalledProcessError) and error.cmd[0:2] == ["pip", "wheel"]:
        # the 'pip wheel' step failed.
-        print('Checking for common errors...')
-        so_files = list(package_dir.glob('**/*.so'))
+        print("Checking for common errors...")
+        so_files = list(package_dir.glob("**/*.so"))

        if so_files:
-            print(textwrap.dedent('''
-                NOTE: Shared object (.so) files found in this project.
+            print(
+                textwrap.dedent(
+                    """
+                    NOTE: Shared object (.so) files found in this project.

-                  These files might be built against the wrong OS, causing problems with
-                  auditwheel.
+                    These files might be built against the wrong OS, causing problems with
+                    auditwheel.

-                  If you're using Cython and have previously done an in-place build,
-                  remove those build files (*.so and *.c) before starting cibuildwheel.
-            '''), file=sys.stderr)
+                    If you're using Cython and have previously done an in-place build,
+                    remove those build files (*.so and *.c) before starting cibuildwheel.
+                    """
+                ),
+                file=sys.stderr,
+            )

-            print('  Files detected:')
-            print('\n'.join([f'    {f}' for f in so_files]))
-            print('')
+            print("  Files detected:")
+            print("\n".join(f"    {f}" for f in so_files))
+            print("")
@@ -7,24 +7,24 @@ from typing import IO, AnyStr, Optional, Union

 from cibuildwheel.util import CIProvider, detect_ci_provider

-DEFAULT_FOLD_PATTERN = ('{name}', '')
+DEFAULT_FOLD_PATTERN = ("{name}", "")
 FOLD_PATTERNS = {
-    'azure': ('##[group]{name}', '##[endgroup]'),
-    'travis': ('travis_fold:start:{identifier}\n{name}', 'travis_fold:end:{identifier}'),
-    'github': ('::group::{name}', '::endgroup::{name}'),
+    "azure": ("##[group]{name}", "##[endgroup]"),
+    "travis": ("travis_fold:start:{identifier}\n{name}", "travis_fold:end:{identifier}"),
+    "github": ("::group::{name}", "::endgroup::{name}"),
 }

 PLATFORM_IDENTIFIER_DESCIPTIONS = {
-    'manylinux_x86_64': 'manylinux x86_64',
-    'manylinux_i686': 'manylinux i686',
-    'manylinux_aarch64': 'manylinux aarch64',
-    'manylinux_ppc64le': 'manylinux ppc64le',
-    'manylinux_s390x': 'manylinux s390x',
-    'win32': 'Windows 32bit',
-    'win_amd64': 'Windows 64bit',
-    'macosx_x86_64': 'macOS x86_64',
-    'macosx_universal2': 'macOS Universal 2 - x86_64 and arm64',
-    'macosx_arm64': 'macOS arm64 - Apple Silicon',
+    "manylinux_x86_64": "manylinux x86_64",
+    "manylinux_i686": "manylinux i686",
+    "manylinux_aarch64": "manylinux aarch64",
+    "manylinux_ppc64le": "manylinux ppc64le",
+    "manylinux_s390x": "manylinux s390x",
+    "win32": "Windows 32bit",
+    "win_amd64": "Windows 64bit",
+    "macosx_x86_64": "macOS x86_64",
+    "macosx_universal2": "macOS Universal 2 - x86_64 and arm64",
+    "macosx_arm64": "macOS arm64 - Apple Silicon",
 }


@@ -38,33 +38,33 @@ class Logger:
    active_fold_group_name: Optional[str] = None

    def __init__(self) -> None:
-        if sys.platform == 'win32' and hasattr(sys.stdout, 'reconfigure'):
+        if sys.platform == "win32" and hasattr(sys.stdout, "reconfigure"):
            # the encoding on Windows can be a 1-byte charmap, but all CIs
            # support utf8, so we hardcode that
-            sys.stdout.reconfigure(encoding='utf8')
+            sys.stdout.reconfigure(encoding="utf8")

        self.unicode_enabled = file_supports_unicode(sys.stdout)

        ci_provider = detect_ci_provider()

        if ci_provider == CIProvider.azure_pipelines:
-            self.fold_mode = 'azure'
+            self.fold_mode = "azure"
            self.colors_enabled = True

        elif ci_provider == CIProvider.github_actions:
-            self.fold_mode = 'github'
+            self.fold_mode = "github"
            self.colors_enabled = True

        elif ci_provider == CIProvider.travis_ci:
-            self.fold_mode = 'travis'
+            self.fold_mode = "travis"
            self.colors_enabled = True

        elif ci_provider == CIProvider.appveyor:
-            self.fold_mode = 'disabled'
+            self.fold_mode = "disabled"
            self.colors_enabled = True

        else:
-            self.fold_mode = 'disabled'
+            self.fold_mode = "disabled"
            self.colors_enabled = file_supports_color(sys.stdout)

    def build_start(self, identifier: str) -> None:
@@ -72,8 +72,8 @@ class Logger:
        c = self.colors
        description = build_description_from_identifier(identifier)
        print()
-        print(f'{c.bold}{c.blue}Building {identifier} wheel{c.end}')
-        print(f'{description}')
+        print(f"{c.bold}{c.blue}Building {identifier} wheel{c.end}")
+        print(f"{description}")
        print()

        self.build_start_time = time.time()
@@ -89,7 +89,9 @@ class Logger:
        duration = time.time() - self.build_start_time

        print()
-        print(f'{c.green}{s.done} {c.end}{self.active_build_identifier} finished in {duration:.2f}s')
+        print(
+            f"{c.green}{s.done} {c.end}{self.active_build_identifier} finished in {duration:.2f}s"
+        )
        self.build_start_time = None
        self.active_build_identifier = None

@@ -105,9 +107,9 @@ class Logger:
            s = self.symbols
            duration = time.time() - self.step_start_time
            if success:
-                print(f'{c.green}{s.done} {c.end}{duration:.2f}s'.rjust(78))
+                print(f"{c.green}{s.done} {c.end}{duration:.2f}s".rjust(78))
            else:
-                print(f'{c.red}{s.error} {c.end}{duration:.2f}s'.rjust(78))
+                print(f"{c.red}{s.error} {c.end}{duration:.2f}s".rjust(78))

            self.step_start_time = None

@@ -116,18 +118,18 @@ class Logger:
        self.error(error)

    def warning(self, message: str) -> None:
-        if self.fold_mode == 'github':
-            print(f'::warning::{message}\n', file=sys.stderr)
+        if self.fold_mode == "github":
+            print(f"::warning::{message}\n", file=sys.stderr)
        else:
            c = self.colors
-            print(f'{c.yellow}Warning{c.end}: {message}\n', file=sys.stderr)
+            print(f"{c.yellow}Warning{c.end}: {message}\n", file=sys.stderr)

    def error(self, error: Union[BaseException, str]) -> None:
-        if self.fold_mode == 'github':
-            print(f'::error::{error}\n', file=sys.stderr)
+        if self.fold_mode == "github":
+            print(f"::error::{error}\n", file=sys.stderr)
        else:
            c = self.colors
-            print(f'{c.bright_red}Error{c.end}: {error}\n', file=sys.stderr)
+            print(f"{c.bright_red}Error{c.end}: {error}\n", file=sys.stderr)

    def _start_fold_group(self, name: str) -> None:
        self._end_fold_group()
@@ -143,21 +145,23 @@ class Logger:
        if self.active_fold_group_name:
            fold_start_pattern = FOLD_PATTERNS.get(self.fold_mode, DEFAULT_FOLD_PATTERN)[1]
            identifier = self._fold_group_identifier(self.active_fold_group_name)
-            print(fold_start_pattern.format(name=self.active_fold_group_name, identifier=identifier))
+            print(
+                fold_start_pattern.format(name=self.active_fold_group_name, identifier=identifier)
+            )
            sys.stdout.flush()
            self.active_fold_group_name = None

    def _fold_group_identifier(self, name: str) -> str:
-        '''
+        """
        Travis doesn't like fold groups identifiers that have spaces in. This
        method converts them to ascii identifiers
-        '''
+        """
        # whitespace to underscores
-        identifier = re.sub(r'\s+', '_', name)
+        identifier = re.sub(r"\s+", "_", name)
        # remove non-alphanum
-        identifier = re.sub(r'[^A-Za-z\d_]+', '', identifier)
+        identifier = re.sub(r"[^A-Za-z\d_]+", "", identifier)
        # trim underscores
-        identifier = identifier.strip('_')
+        identifier = identifier.strip("_")
        # lowercase, shorten
        return identifier.lower()[:20]

@@ -177,53 +181,53 @@ class Logger:


 def build_description_from_identifier(identifier: str) -> str:
-    python_identifier, _, platform_identifier = identifier.partition('-')
+    python_identifier, _, platform_identifier = identifier.partition("-")

-    build_description = ''
+    build_description = ""

    python_interpreter = python_identifier[0:2]
    python_version = python_identifier[2:4]

-    if python_interpreter == 'cp':
-        build_description += 'CPython'
-    elif python_interpreter == 'pp':
-        build_description += 'PyPy'
+    if python_interpreter == "cp":
+        build_description += "CPython"
+    elif python_interpreter == "pp":
+        build_description += "PyPy"
    else:
-        raise Exception('unknown python')
+        raise Exception("unknown python")

-    build_description += f' {python_version[0]}.{python_version[1]} '
+    build_description += f" {python_version[0]}.{python_version[1]} "

    try:
        build_description += PLATFORM_IDENTIFIER_DESCIPTIONS[platform_identifier]
    except KeyError as e:
-        raise Exception('unknown platform') from e
+        raise Exception("unknown platform") from e

    return build_description


 class Colors:
    def __init__(self, *, enabled: bool) -> None:
-        self.red = '\033[31m' if enabled else ''
-        self.green = '\033[32m' if enabled else ''
-        self.yellow = '\033[33m' if enabled else ''
-        self.blue = '\033[34m' if enabled else ''
-        self.cyan = '\033[36m' if enabled else ''
-        self.bright_red = '\033[91m' if enabled else ''
-        self.bright_green = '\033[92m' if enabled else ''
-        self.white = '\033[37m\033[97m' if enabled else ''
+        self.red = "\033[31m" if enabled else ""
+        self.green = "\033[32m" if enabled else ""
+        self.yellow = "\033[33m" if enabled else ""
+        self.blue = "\033[34m" if enabled else ""
+        self.cyan = "\033[36m" if enabled else ""
+        self.bright_red = "\033[91m" if enabled else ""
+        self.bright_green = "\033[92m" if enabled else ""
+        self.white = "\033[37m\033[97m" if enabled else ""

-        self.bg_grey = '\033[48;5;235m' if enabled else ''
+        self.bg_grey = "\033[48;5;235m" if enabled else ""

-        self.bold = '\033[1m' if enabled else ''
-        self.faint = '\033[2m' if enabled else ''
+        self.bold = "\033[1m" if enabled else ""
+        self.faint = "\033[2m" if enabled else ""

-        self.end = '\033[0m' if enabled else ''
+        self.end = "\033[0m" if enabled else ""


 class Symbols:
    def __init__(self, *, unicode: bool) -> None:
-        self.done = '✓' if unicode else 'done'
-        self.error = '✕' if unicode else 'failed'
+        self.done = "✓" if unicode else "done"
+        self.error = "✕" if unicode else "failed"


 def file_supports_color(file_obj: IO[AnyStr]) -> bool:
@@ -231,29 +235,29 @@ def file_supports_color(file_obj: IO[AnyStr]) -> bool:
    Returns True if the running system's terminal supports color.
    """
    plat = sys.platform
-    supported_platform = (plat != 'win32' or 'ANSICON' in os.environ)
+    supported_platform = plat != "win32" or "ANSICON" in os.environ

    is_a_tty = file_is_a_tty(file_obj)

-    return (supported_platform and is_a_tty)
+    return supported_platform and is_a_tty


 def file_is_a_tty(file_obj: IO[AnyStr]) -> bool:
-    return hasattr(file_obj, 'isatty') and file_obj.isatty()
+    return hasattr(file_obj, "isatty") and file_obj.isatty()


 def file_supports_unicode(file_obj: IO[AnyStr]) -> bool:
-    encoding = getattr(file_obj, 'encoding', None)
+    encoding = getattr(file_obj, "encoding", None)
    if not encoding:
        return False

    codec_info = codecs.lookup(encoding)

-    return ('utf' in codec_info.name)
+    return "utf" in codec_info.name


-'''
+"""
 Global instance of the Logger.
-'''
+"""
 # (there's only one stdout per-process, so a global instance is justified)
 log = Logger()
@@ -28,25 +28,30 @@ from .util import (
 )


-def call(args: Sequence[PathOrStr], env: Optional[Dict[str, str]] = None, cwd: Optional[str] = None, shell: bool = False) -> None:
+def call(
+    args: Sequence[PathOrStr],
+    env: Optional[Dict[str, str]] = None,
+    cwd: Optional[str] = None,
+    shell: bool = False,
+) -> None:
    # print the command executing for the logs
    if shell:
-        print(f'+ {args}')
+        print(f"+ {args}")
    else:
-        print('+ ' + ' '.join(shlex.quote(str(a)) for a in args))
+        print("+ " + " ".join(shlex.quote(str(a)) for a in args))

    subprocess.run(args, env=env, cwd=cwd, shell=shell, check=True)


 def get_macos_version() -> Tuple[int, int]:
-    '''
+    """
    Returns the macOS major/minor version, as a tuple, e.g. (10, 15) or (11, 0)

    These tuples can be used in comparisons, e.g.
        (10, 14) <= (11, 0) == True
        (10, 14) <= (10, 16) == True
        (11, 2) <= (11, 0) != True
-    '''
+    """
    version_str, _, _ = platform.mac_ver()
    version = tuple(map(int, version_str.split(".")[:2]))
    return cast(Tuple[int, int], version)
@@ -54,13 +59,13 @@ def get_macos_version() -> Tuple[int, int]:

 def get_macos_sdks() -> List[str]:
    output = subprocess.run(
-        ['xcodebuild', '-showsdks'],
+        ["xcodebuild", "-showsdks"],
        universal_newlines=True,
        check=True,
        stdout=subprocess.PIPE,
    ).stdout

-    return [m.group(1) for m in re.finditer(r'-sdk (macosx\S+)', output)]
+    return [m.group(1) for m in re.finditer(r"-sdk (macosx\S+)", output)]


 class PythonConfiguration(NamedTuple):
@@ -69,16 +74,20 @@ class PythonConfiguration(NamedTuple):
    url: str


-def get_python_configurations(build_selector: BuildSelector,
-                              architectures: Set[Architecture]) -> List[PythonConfiguration]:
+def get_python_configurations(
+    build_selector: BuildSelector, architectures: Set[Architecture]
+) -> List[PythonConfiguration]:

-    full_python_configs = read_python_configs('macos')
+    full_python_configs = read_python_configs("macos")

    python_configurations = [PythonConfiguration(**item) for item in full_python_configs]

    # filter out configs that don't match any of the selected architectures
-    python_configurations = [c for c in python_configurations
-                             if any(c.identifier.endswith(a.value) for a in architectures)]
+    python_configurations = [
+        c
+        for c in python_configurations
+        if any(c.identifier.endswith(a.value) for a in architectures)
+    ]

    # skip builds as required by BUILD/SKIP
    python_configurations = [c for c in python_configurations if build_selector(c.identifier)]
@@ -86,29 +95,41 @@ def get_python_configurations(build_selector: BuildSelector,
    # When running on macOS 11 and x86_64, the reported OS is '10.16', but
    # there is no such OS - it really means macOS 11.
    if get_macos_version() >= (10, 16):
-        if any(c.identifier.startswith('pp') for c in python_configurations):
+        if any(c.identifier.startswith("pp") for c in python_configurations):
            # pypy doesn't work on macOS 11 yet
            # See https://foss.heptapod.net/pypy/pypy/-/issues/3314
-            log.warning(unwrap('''
-                PyPy is currently unsupported when building on macOS 11. To build macOS PyPy wheels,
-                build on an older OS, such as macOS 10.15. To silence this warning, deselect PyPy by
-                adding "pp*-macosx*" to your CIBW_SKIP option.
-            '''))
-            python_configurations = [c for c in python_configurations if not c.identifier.startswith('pp')]
+            log.warning(
+                unwrap(
+                    """
+                    PyPy is currently unsupported when building on macOS 11. To build macOS PyPy
+                    wheels, build on an older OS, such as macOS 10.15. To silence this warning,
+                    deselect PyPy by adding "pp*-macosx*" to your CIBW_SKIP option.
+                    """
+                )
+            )
+            python_configurations = [
+                c for c in python_configurations if not c.identifier.startswith("pp")
+            ]

-        if any(c.identifier.startswith('cp35') for c in python_configurations):
+        if any(c.identifier.startswith("cp35") for c in python_configurations):
            # CPython 3.5 doesn't work on macOS 11
-            log.warning(unwrap('''
-                CPython 3.5 is unsupported when building on macOS 11. To build CPython 3.5 wheels,
-                build on an older OS, such as macOS 10.15. To silence this warning, deselect CPython
-                3.5 by adding "cp35-macosx_x86_64" to your CIBW_SKIP option.
-            '''))
-            python_configurations = [c for c in python_configurations if not c.identifier.startswith('cp35')]
+            log.warning(
+                unwrap(
+                    """
+                    CPython 3.5 is unsupported when building on macOS 11. To build CPython 3.5
+                    wheels, build on an older OS, such as macOS 10.15. To silence this warning,
+                    deselect CPython 3.5 by adding "cp35-macosx_x86_64" to your CIBW_SKIP option.
+                    """
+                )
+            )
+            python_configurations = [
+                c for c in python_configurations if not c.identifier.startswith("cp35")
+            ]

    return python_configurations


-SYMLINKS_DIR = Path('/tmp/cibw_bin')
+SYMLINKS_DIR = Path("/tmp/cibw_bin")


 def make_symlinks(installation_bin_path: Path, python_executable: str, pip_executable: str) -> None:
@@ -121,82 +142,101 @@ def make_symlinks(installation_bin_path: Path, python_executable: str, pip_execu
        shutil.rmtree(SYMLINKS_DIR)
    SYMLINKS_DIR.mkdir(parents=True)

-    (SYMLINKS_DIR / 'python').symlink_to(installation_bin_path / python_executable)
-    (SYMLINKS_DIR / 'python-config').symlink_to(installation_bin_path / (python_executable + '-config'))
-    (SYMLINKS_DIR / 'pip').symlink_to(installation_bin_path / pip_executable)
+    (SYMLINKS_DIR / "python").symlink_to(installation_bin_path / python_executable)
+    (SYMLINKS_DIR / "python-config").symlink_to(
+        installation_bin_path / (python_executable + "-config")
+    )
+    (SYMLINKS_DIR / "pip").symlink_to(installation_bin_path / pip_executable)


 def install_cpython(version: str, url: str) -> Path:
-    installed_system_packages = subprocess.run(['pkgutil', '--pkgs'], universal_newlines=True, check=True, stdout=subprocess.PIPE).stdout.splitlines()
+    installed_system_packages = subprocess.run(
+        ["pkgutil", "--pkgs"], universal_newlines=True, check=True, stdout=subprocess.PIPE
+    ).stdout.splitlines()

    # if this version of python isn't installed, get it from python.org and install
-    python_package_identifier = f'org.python.Python.PythonFramework-{version}'
-    python_executable = 'python3' if version[0] == '3' else 'python'
-    installation_bin_path = Path(f'/Library/Frameworks/Python.framework/Versions/{version}/bin')
+    python_package_identifier = f"org.python.Python.PythonFramework-{version}"
+    python_executable = "python3" if version[0] == "3" else "python"
+    installation_bin_path = Path(f"/Library/Frameworks/Python.framework/Versions/{version}/bin")

    if python_package_identifier not in installed_system_packages:
        # download the pkg
-        download(url, Path('/tmp/Python.pkg'))
+        download(url, Path("/tmp/Python.pkg"))
        # install
-        call(['sudo', 'installer', '-pkg', '/tmp/Python.pkg', '-target', '/'])
+        call(["sudo", "installer", "-pkg", "/tmp/Python.pkg", "-target", "/"])
        # patch open ssl
-        if version == '3.5':
-            open_ssl_patch_url = f'https://github.com/mayeut/patch-macos-python-openssl/releases/download/v1.1.1h/patch-macos-python-{version}-openssl-v1.1.1h.tar.gz'
-            download(open_ssl_patch_url, Path('/tmp/python-patch.tar.gz'))
-            call(['sudo', 'tar', '-C', f'/Library/Frameworks/Python.framework/Versions/{version}/', '-xmf', '/tmp/python-patch.tar.gz'])
+        if version == "3.5":
+            open_ssl_patch_url = f"https://github.com/mayeut/patch-macos-python-openssl/releases/download/v1.1.1h/patch-macos-python-{version}-openssl-v1.1.1h.tar.gz"
+            download(open_ssl_patch_url, Path("/tmp/python-patch.tar.gz"))
+            call(
+                [
+                    "sudo",
+                    "tar",
+                    "-C",
+                    f"/Library/Frameworks/Python.framework/Versions/{version}/",
+                    "-xmf",
+                    "/tmp/python-patch.tar.gz",
+                ]
+            )

-        call(["sudo", str(installation_bin_path/python_executable), str(install_certifi_script)])
+        call(["sudo", str(installation_bin_path / python_executable), str(install_certifi_script)])

-    pip_executable = 'pip3' if version[0] == '3' else 'pip'
+    pip_executable = "pip3" if version[0] == "3" else "pip"
    make_symlinks(installation_bin_path, python_executable, pip_executable)

    return installation_bin_path


 def install_pypy(version: str, url: str) -> Path:
-    pypy_tar_bz2 = url.rsplit('/', 1)[-1]
+    pypy_tar_bz2 = url.rsplit("/", 1)[-1]
    extension = ".tar.bz2"
    assert pypy_tar_bz2.endswith(extension)
-    pypy_base_filename = pypy_tar_bz2[:-len(extension)]
-    installation_path = Path('/tmp') / pypy_base_filename
+    pypy_base_filename = pypy_tar_bz2[: -len(extension)]
+    installation_path = Path("/tmp") / pypy_base_filename
    if not installation_path.exists():
        downloaded_tar_bz2 = Path("/tmp") / pypy_tar_bz2
        download(url, downloaded_tar_bz2)
-        call(['tar', '-C', '/tmp', '-xf', downloaded_tar_bz2])
+        call(["tar", "-C", "/tmp", "-xf", downloaded_tar_bz2])
        # Patch PyPy to make sure headers get installed into a venv
-        patch_version = '_27' if version == '2.7' else ''
-        patch_path = resources_dir / f'pypy_venv{patch_version}.patch'
-        call(['patch', '--force', '-p1', '-d', installation_path, '-i', patch_path])
+        patch_version = "_27" if version == "2.7" else ""
+        patch_path = resources_dir / f"pypy_venv{patch_version}.patch"
+        call(["patch", "--force", "-p1", "-d", installation_path, "-i", patch_path])

-    installation_bin_path = installation_path / 'bin'
-    python_executable = 'pypy3' if version[0] == '3' else 'pypy'
-    pip_executable = 'pip3' if version[0] == '3' else 'pip'
+    installation_bin_path = installation_path / "bin"
+    python_executable = "pypy3" if version[0] == "3" else "pypy"
+    pip_executable = "pip3" if version[0] == "3" else "pip"
    make_symlinks(installation_bin_path, python_executable, pip_executable)

    return installation_bin_path


-def setup_python(python_configuration: PythonConfiguration,
-                 dependency_constraint_flags: Sequence[PathOrStr],
-                 environment: ParsedEnvironment) -> Dict[str, str]:
+def setup_python(
+    python_configuration: PythonConfiguration,
+    dependency_constraint_flags: Sequence[PathOrStr],
+    environment: ParsedEnvironment,
+) -> Dict[str, str]:
    implementation_id = python_configuration.identifier.split("-")[0]
-    log.step(f'Installing Python {implementation_id}...')
+    log.step(f"Installing Python {implementation_id}...")

-    if implementation_id.startswith('cp'):
-        installation_bin_path = install_cpython(python_configuration.version, python_configuration.url)
-    elif implementation_id.startswith('pp'):
+    if implementation_id.startswith("cp"):
+        installation_bin_path = install_cpython(
+            python_configuration.version, python_configuration.url
+        )
+    elif implementation_id.startswith("pp"):
        installation_bin_path = install_pypy(python_configuration.version, python_configuration.url)
    else:
        raise ValueError("Unknown Python implementation")

-    log.step('Setting up build environment...')
+    log.step("Setting up build environment...")

    env = os.environ.copy()
-    env['PATH'] = os.pathsep.join([
-        str(SYMLINKS_DIR),
-        str(installation_bin_path),
-        env['PATH'],
-    ])
+    env["PATH"] = os.pathsep.join(
+        [
+            str(SYMLINKS_DIR),
+            str(installation_bin_path),
+            env["PATH"],
+        ]
+    )

    # Fix issue with site.py setting the wrong `sys.prefix`, `sys.exec_prefix`,
    # `sys.path`, ... for PyPy: https://foss.heptapod.net/pypy/pypy/issues/3175
@@ -204,147 +244,188 @@ def setup_python(python_configuration: PythonConfiguration,
    # testing virtualenv- see https://github.com/theacodes/nox/issues/44 and
    # https://github.com/pypa/virtualenv/issues/620
    # Also see https://github.com/python/cpython/pull/9516
-    env.pop('__PYVENV_LAUNCHER__', None)
+    env.pop("__PYVENV_LAUNCHER__", None)
    env = environment.as_dictionary(prev_environment=env)

    # we version pip ourselves, so we don't care about pip version checking
-    env['PIP_DISABLE_PIP_VERSION_CHECK'] = '1'
+    env["PIP_DISABLE_PIP_VERSION_CHECK"] = "1"

    # check what version we're on
-    call(['which', 'python'], env=env)
-    call(['python', '--version'], env=env)
-    which_python = subprocess.run(['which', 'python'], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE).stdout.strip()
-    if which_python != '/tmp/cibw_bin/python':
-        print("cibuildwheel: python available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert python above it.", file=sys.stderr)
+    call(["which", "python"], env=env)
+    call(["python", "--version"], env=env)
+    which_python = subprocess.run(
+        ["which", "python"], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE
+    ).stdout.strip()
+    if which_python != "/tmp/cibw_bin/python":
+        print(
+            "cibuildwheel: python available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert python above it.",
+            file=sys.stderr,
+        )
        sys.exit(1)

    # install pip & wheel
-    call(['python', get_pip_script, *dependency_constraint_flags], env=env, cwd="/tmp")
-    assert (installation_bin_path / 'pip').exists()
-    call(['which', 'pip'], env=env)
-    call(['pip', '--version'], env=env)
-    which_pip = subprocess.run(['which', 'pip'], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE).stdout.strip()
-    if which_pip != '/tmp/cibw_bin/pip':
-        print("cibuildwheel: pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it.", file=sys.stderr)
+    call(["python", get_pip_script, *dependency_constraint_flags], env=env, cwd="/tmp")
+    assert (installation_bin_path / "pip").exists()
+    call(["which", "pip"], env=env)
+    call(["pip", "--version"], env=env)
+    which_pip = subprocess.run(
+        ["which", "pip"], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE
+    ).stdout.strip()
+    if which_pip != "/tmp/cibw_bin/pip":
+        print(
+            "cibuildwheel: pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it.",
+            file=sys.stderr,
+        )
        sys.exit(1)

    # Set MACOSX_DEPLOYMENT_TARGET to 10.9, if the user didn't set it.
    # CPython 3.5 defaults to 10.6, and pypy defaults to 10.7, causing
    # inconsistencies if it's left unset.
-    env.setdefault('MACOSX_DEPLOYMENT_TARGET', '10.9')
+    env.setdefault("MACOSX_DEPLOYMENT_TARGET", "10.9")

-    if python_configuration.version == '3.5':
+    config_is_arm64 = python_configuration.identifier.endswith("arm64")
+    config_is_universal2 = python_configuration.identifier.endswith("universal2")
+
+    if python_configuration.version == "3.5":
        # Cross-compilation platform override - CPython 3.5 has an
        # i386/x86_64 version of Python, but we only want a x64_64 build
-        env.setdefault('_PYTHON_HOST_PLATFORM', 'macosx-10.9-x86_64')
+        env.setdefault("_PYTHON_HOST_PLATFORM", "macosx-10.9-x86_64")
        # https://github.com/python/cpython/blob/a5ed2fe0eedefa1649aa93ee74a0bafc8e628a10/Lib/_osx_support.py#L260
-        env.setdefault('ARCHFLAGS', '-arch x86_64')
+        env.setdefault("ARCHFLAGS", "-arch x86_64")

-    if python_configuration.version == '3.9':
-        if python_configuration.identifier.endswith('x86_64'):
-            # even on the macos11.0 Python installer, on the x86_64 side it's
-            # compatible back to 10.9.
-            env.setdefault('_PYTHON_HOST_PLATFORM', 'macosx-10.9-x86_64')
-            env.setdefault('ARCHFLAGS', '-arch x86_64')
-        elif python_configuration.identifier.endswith('arm64'):
+    elif python_configuration.version not in {"3.6", "3.7"}:
+        if config_is_arm64:
            # macOS 11 is the first OS with arm64 support, so the wheels
            # have that as a minimum.
-            env.setdefault('_PYTHON_HOST_PLATFORM', 'macosx-11.0-arm64')
-            env.setdefault('ARCHFLAGS', '-arch arm64')
-        elif python_configuration.identifier.endswith('universal2'):
-            if get_macos_version() < (10, 16):
-                # we can do universal2 builds on macos 10.15, but we need to
-                # set ARCHFLAGS otherwise CPython sets it to `-arch x86_64`
-                env.setdefault('ARCHFLAGS', '-arch arm64 -arch x86_64')
+            env.setdefault("_PYTHON_HOST_PLATFORM", "macosx-11.0-arm64")
+            env.setdefault("ARCHFLAGS", "-arch arm64")
+        elif config_is_universal2:
+            env.setdefault("_PYTHON_HOST_PLATFORM", "macosx-10.9-universal2")
+            env.setdefault("ARCHFLAGS", "-arch arm64 -arch x86_64")
+        elif python_configuration.identifier.endswith("x86_64"):
+            # even on the macos11.0 Python installer, on the x86_64 side it's
+            # compatible back to 10.9.
+            env.setdefault("_PYTHON_HOST_PLATFORM", "macosx-10.9-x86_64")
+            env.setdefault("ARCHFLAGS", "-arch x86_64")

-    if python_configuration.identifier.endswith('arm64') or python_configuration.identifier.endswith('universal2'):
-        if get_macos_version() < (10, 16) and 'SDKROOT' not in env:
-            # xcode 12.2 or higher can build arm64 on macos 10.15 or below, but
-            # needs the correct SDK selected.
-            sdks = get_macos_sdks()
+    building_arm64 = config_is_arm64 or config_is_universal2
+    if building_arm64 and get_macos_version() < (10, 16) and "SDKROOT" not in env:
+        # xcode 12.2 or higher can build arm64 on macos 10.15 or below, but
+        # needs the correct SDK selected.
+        sdks = get_macos_sdks()

-            # Different versions of Xcode contain different SDK versions...
-            # we're happy with anything newer than macOS 11.0
-            arm64_compatible_sdks = [s for s in sdks if not s.startswith('macosx10.')]
+        # Different versions of Xcode contain different SDK versions...
+        # we're happy with anything newer than macOS 11.0
+        arm64_compatible_sdks = [s for s in sdks if not s.startswith("macosx10.")]

-            if not arm64_compatible_sdks:
-                log.warning(unwrap('''
+        if not arm64_compatible_sdks:
+            log.warning(
+                unwrap(
+                    """
                    SDK for building arm64-compatible wheels not found. You need Xcode 12.2 or later
                    to build universal2 or arm64 wheels.
-                '''))
-            else:
-                env.setdefault('SDKROOT', arm64_compatible_sdks[0])
+                    """
+                )
+            )
+        else:
+            env.setdefault("SDKROOT", arm64_compatible_sdks[0])

-    log.step('Installing build tools...')
-    call(['pip', 'install', '--upgrade', 'setuptools', 'wheel', 'delocate', *dependency_constraint_flags], env=env)
+    log.step("Installing build tools...")
+    call(
+        [
+            "pip",
+            "install",
+            "--upgrade",
+            "setuptools",
+            "wheel",
+            "delocate",
+            *dependency_constraint_flags,
+        ],
+        env=env,
+    )

    return env


 def build(options: BuildOptions) -> None:
-    temp_dir = Path(tempfile.mkdtemp(prefix='cibuildwheel'))
-    built_wheel_dir = temp_dir / 'built_wheel'
-    repaired_wheel_dir = temp_dir / 'repaired_wheel'
+    temp_dir = Path(tempfile.mkdtemp(prefix="cibuildwheel"))
+    built_wheel_dir = temp_dir / "built_wheel"
+    repaired_wheel_dir = temp_dir / "repaired_wheel"

    try:
        if options.before_all:
-            log.step('Running before_all...')
+            log.step("Running before_all...")
            env = options.environment.as_dictionary(prev_environment=os.environ)
-            env.setdefault('MACOSX_DEPLOYMENT_TARGET', '10.9')
-            before_all_prepared = prepare_command(options.before_all, project='.', package=options.package_dir)
+            env.setdefault("MACOSX_DEPLOYMENT_TARGET", "10.9")
+            before_all_prepared = prepare_command(
+                options.before_all, project=".", package=options.package_dir
+            )
            call([before_all_prepared], shell=True, env=env)

-        python_configurations = get_python_configurations(options.build_selector, options.architectures)
+        python_configurations = get_python_configurations(
+            options.build_selector, options.architectures
+        )

        for config in python_configurations:
            log.build_start(config.identifier)

+            config_is_arm64 = config.identifier.endswith("arm64")
+            config_is_universal2 = config.identifier.endswith("universal2")
+
            dependency_constraint_flags: Sequence[PathOrStr] = []
            if options.dependency_constraints:
                dependency_constraint_flags = [
-                    '-c', options.dependency_constraints.get_for_python_version(config.version)
+                    "-c",
+                    options.dependency_constraints.get_for_python_version(config.version),
                ]

            env = setup_python(config, dependency_constraint_flags, options.environment)

            if options.before_build:
-                log.step('Running before_build...')
-                before_build_prepared = prepare_command(options.before_build, project='.', package=options.package_dir)
+                log.step("Running before_build...")
+                before_build_prepared = prepare_command(
+                    options.before_build, project=".", package=options.package_dir
+                )
                call(before_build_prepared, env=env, shell=True)

-            log.step('Building wheel...')
+            log.step("Building wheel...")
            if built_wheel_dir.exists():
                shutil.rmtree(built_wheel_dir)
            built_wheel_dir.mkdir(parents=True)

            # Path.resolve() is needed. Without it pip wheel may try to fetch package from pypi.org
-            # see https://github.com/joerick/cibuildwheel/pull/369
-            call([
-                'pip', 'wheel',
-                options.package_dir.resolve(),
-                '-w', built_wheel_dir,
-                '--no-deps',
-                *get_build_verbosity_extra_flags(options.build_verbosity)
-            ], env=env)
+            # see https://github.com/pypa/cibuildwheel/pull/369
+            call(
+                [
+                    "pip",
+                    "wheel",
+                    options.package_dir.resolve(),
+                    "--wheel-dir",
+                    built_wheel_dir,
+                    "--no-deps",
+                    *get_build_verbosity_extra_flags(options.build_verbosity),
+                ],
+                env=env,
+            )

-            built_wheel = next(built_wheel_dir.glob('*.whl'))
+            built_wheel = next(built_wheel_dir.glob("*.whl"))

            if repaired_wheel_dir.exists():
                shutil.rmtree(repaired_wheel_dir)
            repaired_wheel_dir.mkdir(parents=True)

-            if built_wheel.name.endswith('none-any.whl'):
+            if built_wheel.name.endswith("none-any.whl"):
                raise NonPlatformWheelError()

            if options.repair_command:
-                log.step('Repairing wheel...')
+                log.step("Repairing wheel...")

-                if config.identifier.endswith('universal2'):
-                    delocate_archs = 'x86_64,arm64'
-                elif config.identifier.endswith('arm64'):
-                    delocate_archs = 'arm64'
+                if config_is_universal2:
+                    delocate_archs = "x86_64,arm64"
+                elif config_is_arm64:
+                    delocate_archs = "arm64"
                else:
-                    delocate_archs = 'x86_64'
+                    delocate_archs = "x86_64"

                repair_command_prepared = prepare_command(
                    options.repair_command,
@@ -356,105 +437,137 @@ def build(options: BuildOptions) -> None:
            else:
                shutil.move(str(built_wheel), repaired_wheel_dir)

-            repaired_wheel = next(repaired_wheel_dir.glob('*.whl'))
+            repaired_wheel = next(repaired_wheel_dir.glob("*.whl"))

            log.step_end()

            if options.test_command and options.test_selector(config.identifier):
                machine_arch = platform.machine()
-                testing_archs: List[Literal['x86_64', 'arm64']] = []
+                testing_archs: List[Literal["x86_64", "arm64"]] = []

-                if config.identifier.endswith('_arm64'):
-                    testing_archs = ['arm64']
-                elif config.identifier.endswith('_universal2'):
-                    testing_archs = ['x86_64', 'arm64']
+                if config_is_arm64:
+                    testing_archs = ["arm64"]
+                elif config_is_universal2:
+                    testing_archs = ["x86_64", "arm64"]
                else:
-                    testing_archs = ['x86_64']
+                    testing_archs = ["x86_64"]

                for testing_arch in testing_archs:
-                    if config.identifier.endswith('_universal2'):
-                        arch_specific_identifier = f'{config.identifier}:{testing_arch}'
+                    if config_is_universal2:
+                        arch_specific_identifier = f"{config.identifier}:{testing_arch}"
                        if not options.test_selector(arch_specific_identifier):
                            continue

-                    if machine_arch == 'x86_64' and testing_arch == 'arm64':
-                        if config.identifier.endswith('_arm64'):
-                            log.warning(unwrap('''
-                                While arm64 wheels can be built on x86_64, they cannot be tested. The
-                                ability to test the arm64 wheels will be added in a future release of
-                                cibuildwheel, once Apple Silicon CI runners are widely available. To
-                                silence this warning, set `CIBW_TEST_SKIP: *-macosx_arm64`.
-                            '''))
-                        elif config.identifier.endswith('_universal2'):
-                            log.warning(unwrap('''
-                                While universal2 wheels can be built on x86_64, the arm64 part of them
-                                cannot currently be tested. The ability to test the arm64 part of a
-                                universal2 wheel will be added in a future release of cibuildwheel, once
-                                Apple Silicon CI runners are widely available. To silence this warning,
-                                set `CIBW_TEST_SKIP: *-macosx_universal2:arm64`.
-                            '''))
+                    if machine_arch == "x86_64" and testing_arch == "arm64":
+                        if config_is_arm64:
+                            log.warning(
+                                unwrap(
+                                    """
+                                    While arm64 wheels can be built on x86_64, they cannot be
+                                    tested. The ability to test the arm64 wheels will be added in a
+                                    future release of cibuildwheel, once Apple Silicon CI runners
+                                    are widely available. To silence this warning, set
+                                    `CIBW_TEST_SKIP: *-macosx_arm64`.
+                                    """
+                                )
+                            )
+                        elif config_is_universal2:
+                            log.warning(
+                                unwrap(
+                                    """
+                                    While universal2 wheels can be built on x86_64, the arm64 part
+                                    of them cannot currently be tested. The ability to test the
+                                    arm64 part of a universal2 wheel will be added in a future
+                                    release of cibuildwheel, once Apple Silicon CI runners are
+                                    widely available. To silence this warning, set
+                                    `CIBW_TEST_SKIP: *-macosx_universal2:arm64`.
+                                    """
+                                )
+                            )
                        else:
-                            raise RuntimeError('unreachable')
+                            raise RuntimeError("unreachable")

                        # skip this test
                        continue

-                    log.step('Testing wheel...' if testing_arch == machine_arch else f'Testing wheel on {testing_arch}...')
+                    log.step(
+                        "Testing wheel..."
+                        if testing_arch == machine_arch
+                        else f"Testing wheel on {testing_arch}..."
+                    )

                    # set up a virtual environment to install and test from, to make sure
                    # there are no dependencies that were pulled in at build time.
-                    call(['pip', 'install', 'virtualenv', *dependency_constraint_flags], env=env)
+                    call(["pip", "install", "virtualenv", *dependency_constraint_flags], env=env)
                    venv_dir = Path(tempfile.mkdtemp())

                    arch_prefix = []
                    if testing_arch != machine_arch:
-                        if machine_arch == 'arm64' and testing_arch == 'x86_64':
+                        if machine_arch == "arm64" and testing_arch == "x86_64":
                            # rosetta2 will provide the emulation with just the arch prefix.
-                            arch_prefix = ['arch', '-x86_64']
+                            arch_prefix = ["arch", "-x86_64"]
                        else:
-                            raise RuntimeError("don't know how to emulate {testing_arch} on {machine_arch}")
+                            raise RuntimeError(
+                                "don't know how to emulate {testing_arch} on {machine_arch}"
+                            )

                    # define a custom 'call' function that adds the arch prefix each time
                    def call_with_arch(args: Sequence[PathOrStr], **kwargs: Any) -> None:
                        if isinstance(args, str):
-                            args = ' '.join(arch_prefix) + ' ' + args
+                            args = " ".join(arch_prefix) + " " + args
                        else:
                            args = [*arch_prefix, *args]
                        call(args, **kwargs)

                    # Use --no-download to ensure determinism by using seed libraries
                    # built into virtualenv
-                    call_with_arch(['python', '-m', 'virtualenv', '--no-download', venv_dir], env=env)
+                    call_with_arch(
+                        ["python", "-m", "virtualenv", "--no-download", venv_dir], env=env
+                    )

                    virtualenv_env = env.copy()
-                    virtualenv_env['PATH'] = os.pathsep.join([
-                        str(venv_dir / 'bin'),
-                        virtualenv_env['PATH'],
-                    ])
+                    virtualenv_env["PATH"] = os.pathsep.join(
+                        [
+                            str(venv_dir / "bin"),
+                            virtualenv_env["PATH"],
+                        ]
+                    )

                    # check that we are using the Python from the virtual environment
-                    call_with_arch(['which', 'python'], env=virtualenv_env)
+                    call_with_arch(["which", "python"], env=virtualenv_env)

                    if options.before_test:
-                        before_test_prepared = prepare_command(options.before_test, project='.', package=options.package_dir)
+                        before_test_prepared = prepare_command(
+                            options.before_test, project=".", package=options.package_dir
+                        )
                        call_with_arch(before_test_prepared, env=virtualenv_env, shell=True)

                    # install the wheel
-                    call_with_arch(['pip', 'install', str(repaired_wheel) + options.test_extras], env=virtualenv_env)
+                    call_with_arch(
+                        ["pip", "install", f"{repaired_wheel}{options.test_extras}"],
+                        env=virtualenv_env,
+                    )

                    # test the wheel
                    if options.test_requires:
-                        call_with_arch(['pip', 'install'] + options.test_requires, env=virtualenv_env)
+                        call_with_arch(
+                            ["pip", "install"] + options.test_requires, env=virtualenv_env
+                        )

                    # run the tests from $HOME, with an absolute path in the command
                    # (this ensures that Python runs the tests against the installed wheel
                    # and not the repo code)
                    test_command_prepared = prepare_command(
                        options.test_command,
-                        project=Path('.').resolve(),
-                        package=options.package_dir.resolve()
+                        project=Path(".").resolve(),
+                        package=options.package_dir.resolve(),
+                    )
+                    call_with_arch(
+                        test_command_prepared,
+                        cwd=os.environ["HOME"],
+                        env=virtualenv_env,
+                        shell=True,
                    )
-                    call_with_arch(test_command_prepared, cwd=os.environ['HOME'], env=virtualenv_env, shell=True)

                    # clean up
                    shutil.rmtree(venv_dir)
@@ -463,5 +576,7 @@ def build(options: BuildOptions) -> None:
            shutil.move(str(repaired_wheel), options.output_dir)
            log.build_end()
    except subprocess.CalledProcessError as error:
-        log.step_end_with_error(f'Command {error.cmd} failed with code {error.returncode}. {error.stdout}')
+        log.step_end_with_error(
+            f"Command {error.cmd} failed with code {error.returncode}. {error.stdout}"
+        )
        sys.exit(1)
@@ -35,9 +35,8 @@ class Analyzer(ast.NodeVisitor):
        if node.arg == "python_requires":
            # Must not be nested in an if or other structure
            # This will be Module -> Expr -> Call -> keyword
-            if (
-                not hasattr(node.parent.parent.parent, "parent")  # type: ignore
-                and isinstance(node.value, Constant)
+            if not hasattr(node.parent.parent.parent, "parent") and isinstance(  # type: ignore
+                node.value, Constant
            ):
                self.requires_python = get_constant(node.value)

@@ -57,21 +56,21 @@ def get_requires_python_str(package_dir: Path) -> Optional[str]:

    # Read in from pyproject.toml:project.requires-python
    try:
-        info = toml.load(package_dir / 'pyproject.toml')
-        return str(info['project']['requires-python'])
+        info = toml.load(package_dir / "pyproject.toml")
+        return str(info["project"]["requires-python"])
    except (FileNotFoundError, KeyError, IndexError, TypeError):
        pass

    # Read in from setup.cfg:options.python_requires
    try:
        config = ConfigParser()
-        config.read(package_dir / 'setup.cfg')
-        return str(config['options']['python_requires'])
+        config.read(package_dir / "setup.cfg")
+        return str(config["options"]["python_requires"])
    except (FileNotFoundError, KeyError, IndexError, TypeError):
        pass

    try:
-        with open(package_dir / 'setup.py') as f:
+        with open(package_dir / "setup.py") as f:
            return setup_py_python_requires(f.read())
    except FileNotFoundError:
        pass
@@ -40,10 +40,12 @@ python_configurations = [
  { identifier = "cp35-macosx_x86_64", version = "3.5", url = "https://www.python.org/ftp/python/3.5.4/python-3.5.4-macosx10.6.pkg" },
  { identifier = "cp36-macosx_x86_64", version = "3.6", url = "https://www.python.org/ftp/python/3.6.8/python-3.6.8-macosx10.9.pkg" },
  { identifier = "cp37-macosx_x86_64", version = "3.7", url = "https://www.python.org/ftp/python/3.7.9/python-3.7.9-macosx10.9.pkg" },
-  { identifier = "cp38-macosx_x86_64", version = "3.8", url = "https://www.python.org/ftp/python/3.8.8/python-3.8.8-macosx10.9.pkg" },
-  { identifier = "cp39-macosx_x86_64", version = "3.9", url = "https://www.python.org/ftp/python/3.9.2/python-3.9.2-macos11.pkg" },
-  { identifier = "cp39-macosx_arm64", version = "3.9", url = "https://www.python.org/ftp/python/3.9.2/python-3.9.2-macos11.pkg" },
-  { identifier = "cp39-macosx_universal2", version = "3.9", url = "https://www.python.org/ftp/python/3.9.2/python-3.9.2-macos11.pkg" },
+  { identifier = "cp38-macosx_x86_64", version = "3.8", url = "https://www.python.org/ftp/python/3.8.10/python-3.8.10-macosx10.9.pkg" },
+  { identifier = "cp38-macosx_arm64", version = "3.8", url = "https://www.python.org/ftp/python/3.8.10/python-3.8.10-macosx10.9.pkg" },
+  { identifier = "cp38-macosx_universal2", version = "3.8", url = "https://www.python.org/ftp/python/3.8.10/python-3.8.10-macosx10.9.pkg" },
+  { identifier = "cp39-macosx_x86_64", version = "3.9", url = "https://www.python.org/ftp/python/3.9.5/python-3.9.5-macos11.pkg" },
+  { identifier = "cp39-macosx_arm64", version = "3.9", url = "https://www.python.org/ftp/python/3.9.5/python-3.9.5-macos11.pkg" },
+  { identifier = "cp39-macosx_universal2", version = "3.9", url = "https://www.python.org/ftp/python/3.9.5/python-3.9.5-macos11.pkg" },
  { identifier = "pp27-macosx_x86_64", version = "2.7", url = "https://downloads.python.org/pypy/pypy2.7-v7.3.3-osx64.tar.bz2" },
  { identifier = "pp36-macosx_x86_64", version = "3.6", url = "https://downloads.python.org/pypy/pypy3.6-v7.3.3-osx64.tar.bz2" },
  { identifier = "pp37-macosx_x86_64", version = "3.7", url = "https://downloads.python.org/pypy/pypy3.7-v7.3.3-osx64.tar.bz2" },
@@ -59,10 +61,10 @@ python_configurations = [
  { identifier = "cp36-win_amd64", version = "3.6.8", arch = "64" },
  { identifier = "cp37-win32", version = "3.7.9", arch = "32" },
  { identifier = "cp37-win_amd64", version = "3.7.9", arch = "64" },
-  { identifier = "cp38-win32", version = "3.8.8", arch = "32" },
-  { identifier = "cp38-win_amd64", version = "3.8.8", arch = "64" },
-  { identifier = "cp39-win32", version = "3.9.2", arch = "32" },
-  { identifier = "cp39-win_amd64", version = "3.9.2", arch = "64" },
+  { identifier = "cp38-win32", version = "3.8.9", arch = "32" },
+  { identifier = "cp38-win_amd64", version = "3.8.9", arch = "64" },
+  { identifier = "cp39-win32", version = "3.9.4", arch = "32" },
+  { identifier = "cp39-win_amd64", version = "3.9.4", arch = "64" },
  { identifier = "pp27-win32", version = "2.7", arch = "32", url = "https://downloads.python.org/pypy/pypy2.7-v7.3.3-win32.zip" },
  { identifier = "pp36-win32", version = "3.6", arch = "32", url = "https://downloads.python.org/pypy/pypy3.6-v7.3.3-win32.zip" },
  { identifier = "pp37-win32", version = "3.7", arch = "32", url = "https://downloads.python.org/pypy/pypy3.7-v7.3.3-win32.zip" },
@@ -29,7 +29,7 @@ pathlib2==2.3.5
    #   virtualenv
 scandir==1.10.0
    # via pathlib2
-singledispatch==3.6.0
+singledispatch==3.6.1
    # via importlib-resources
 six==1.15.0
    # via
@@ -37,7 +37,7 @@ six==1.15.0
    #   virtualenv
 typing==3.7.4.3
    # via importlib-resources
-virtualenv==20.4.2
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
 wheel==0.36.2
    # via
@@ -18,7 +18,7 @@ importlib-resources==3.2.1
    # via virtualenv
 six==1.15.0
    # via virtualenv
-virtualenv==20.4.2
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
 wheel==0.36.2
    # via
@@ -12,21 +12,21 @@ distlib==0.3.1
    # via virtualenv
 filelock==3.0.12
    # via virtualenv
-importlib-metadata==3.4.0
+importlib-metadata==3.10.0
    # via virtualenv
-importlib-resources==5.1.0
+importlib-resources==5.1.2
    # via virtualenv
 six==1.15.0
    # via virtualenv
 typing-extensions==3.7.4.3
    # via importlib-metadata
-virtualenv==20.4.2
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
 wheel==0.36.2
    # via
    #   -r cibuildwheel/resources/constraints.in
    #   delocate
-zipp==3.4.0
+zipp==3.4.1
    # via
    #   importlib-metadata
    #   importlib-resources
@@ -34,5 +34,5 @@ zipp==3.4.0
 # The following packages are considered to be unsafe in a requirements file:
 pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==53.0.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -12,23 +12,23 @@ distlib==0.3.1
    # via virtualenv
 filelock==3.0.12
    # via virtualenv
-importlib-metadata==3.4.0
+importlib-metadata==3.10.0
    # via virtualenv
 six==1.15.0
    # via virtualenv
 typing-extensions==3.7.4.3
    # via importlib-metadata
-virtualenv==20.4.2
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
 wheel==0.36.2
    # via
    #   -r cibuildwheel/resources/constraints.in
    #   delocate
-zipp==3.4.0
+zipp==3.4.1
    # via importlib-metadata

 # The following packages are considered to be unsafe in a requirements file:
 pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==53.0.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -14,7 +14,7 @@ filelock==3.0.12
    # via virtualenv
 six==1.15.0
    # via virtualenv
-virtualenv==20.4.2
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
 wheel==0.36.2
    # via
@@ -24,5 +24,5 @@ wheel==0.36.2
 # The following packages are considered to be unsafe in a requirements file:
 pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==53.0.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -14,7 +14,7 @@ filelock==3.0.12
    # via virtualenv
 six==1.15.0
    # via virtualenv
-virtualenv==20.4.2
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
 wheel==0.36.2
    # via
@@ -24,5 +24,5 @@ wheel==0.36.2
 # The following packages are considered to be unsafe in a requirements file:
 pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==53.0.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -14,7 +14,7 @@ filelock==3.0.12
    # via virtualenv
 six==1.15.0
    # via virtualenv
-virtualenv==20.4.2
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
 wheel==0.36.2
    # via
@@ -24,5 +24,5 @@ wheel==0.36.2
 # The following packages are considered to be unsafe in a requirements file:
 pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==53.0.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -34,14 +34,17 @@ PY3 = sys.version_info[0] == 3
 if PY3:
    iterbytes = iter
 else:
+
    def iterbytes(buf):
        return (ord(byte) for byte in buf)

+
 try:
    from base64 import b85decode
 except ImportError:
-    _b85alphabet = (b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-                    b"abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~")
+    _b85alphabet = (
+        b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" b"abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~"
+    )

    def b85decode(b):
        _b85dec = [None] * 256
@@ -49,11 +52,11 @@ except ImportError:
            _b85dec[c] = i

        padding = (-len(b)) % 5
-        b = b + b'~' * padding
+        b = b + b"~" * padding
        out = []
-        packI = struct.Struct('!I').pack
+        packI = struct.Struct("!I").pack
        for i in range(0, len(b), 5):
-            chunk = b[i:i + 5]
+            chunk = b[i : i + 5]
            acc = 0
            try:
                for c in iterbytes(chunk):
@@ -61,17 +64,14 @@ except ImportError:
            except TypeError:
                for j, c in enumerate(iterbytes(chunk)):
                    if _b85dec[c] is None:
-                        raise ValueError(
-                            'bad base85 character at position %d' % (i + j)
-                        )
+                        raise ValueError("bad base85 character at position %d" % (i + j))
                raise
            try:
                out.append(packI(acc))
            except struct.error:
-                raise ValueError('base85 overflow in hunk starting at byte %d'
-                                 % i)
+                raise ValueError("base85 overflow in hunk starting at byte %d" % i)

-        result = b''.join(out)
+        result = b"".join(out)
        if padding:
            result = result[:-padding]
        return result
@@ -87,6 +87,7 @@ def bootstrap(tmpdir=None):
    # Due to pip._internal.commands.commands_dict structure, a monkeypatch
    # seems the simplest workaround.
    install_parse_args = InstallCommand.parse_args
+
    def cert_parse_args(self, args):
        # If cert isn't specified in config or environment, we provide our
        # own certificate through defaults.
@@ -95,6 +96,7 @@ def bootstrap(tmpdir=None):
        if not self.parser.get_default_values().cert:
            self.parser.defaults["cert"] = cert_path  # calculated below
        return install_parse_args(self, args)
+
    InstallCommand.parse_args = cert_parse_args

    implicit_pip = True
@@ -118,12 +120,14 @@ def bootstrap(tmpdir=None):
    if implicit_setuptools:
        try:
            import setuptools  # noqa
+
            implicit_setuptools = False
        except ImportError:
            pass
    if implicit_wheel:
        try:
            import wheel  # noqa
+
            implicit_wheel = False
        except ImportError:
            pass
@@ -13,20 +13,27 @@ import stat
 import subprocess
 import sys

-STAT_0o775 = (stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR
-              | stat.S_IRGRP | stat.S_IWGRP | stat.S_IXGRP
-              | stat.S_IROTH | stat.S_IXOTH)
+STAT_0o775 = (
+    stat.S_IRUSR
+    | stat.S_IWUSR
+    | stat.S_IXUSR
+    | stat.S_IRGRP
+    | stat.S_IWGRP
+    | stat.S_IXGRP
+    | stat.S_IROTH
+    | stat.S_IXOTH
+)

 if sys.version_info[0] == 2:
    FileNotFoundError = OSError


 def main():
-    openssl_dir, openssl_cafile = os.path.split(
-        ssl.get_default_verify_paths().openssl_cafile)
+    openssl_dir, openssl_cafile = os.path.split(ssl.get_default_verify_paths().openssl_cafile)
    print(" -- pip install --upgrade certifi")
-    subprocess.check_call([sys.executable,
-                           "-E", "-s", "-m", "pip", "install", "--upgrade", "certifi"])
+    subprocess.check_call(
+        [sys.executable, "-E", "-s", "-m", "pip", "install", "--upgrade", "certifi"]
+    )

    import certifi

@@ -47,5 +54,5 @@ def main():
    print(" -- update complete")


-if __name__ == '__main__':
+if __name__ == "__main__":
    main()
@@ -1,27 +1,26 @@
 [x86_64]
-manylinux1 = quay.io/pypa/manylinux1_x86_64:2021-02-19-3257524
+manylinux1 = quay.io/pypa/manylinux1_x86_64:2021-05-05-b64d921
 manylinux2010 = quay.io/pypa/manylinux2010_x86_64:2021-02-06-3d322a5
-manylinux2014 = quay.io/pypa/manylinux2014_x86_64:2021-02-20-2c345f8
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_x86_64:2021-02-20-2c345f8
+manylinux2014 = quay.io/pypa/manylinux2014_x86_64:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_x86_64:2021-05-01-28d233a

 [i686]
-manylinux1 = quay.io/pypa/manylinux1_i686:2021-02-19-3257524
+manylinux1 = quay.io/pypa/manylinux1_i686:2021-05-05-b64d921
 manylinux2010 = quay.io/pypa/manylinux2010_i686:2021-02-06-3d322a5
-manylinux2014 = quay.io/pypa/manylinux2014_i686:2021-02-20-2c345f8
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_i686:2021-02-20-2c345f8
+manylinux2014 = quay.io/pypa/manylinux2014_i686:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_i686:2021-05-01-28d233a

 [pypy_x86_64]
 manylinux2010 = pypywheels/manylinux2010-pypy_x86_64:2020-12-11-f1e0e80

 [aarch64]
-manylinux2014 = quay.io/pypa/manylinux2014_aarch64:2021-02-20-2c345f8
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_aarch64:2021-02-20-2c345f8
+manylinux2014 = quay.io/pypa/manylinux2014_aarch64:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_aarch64:2021-05-01-28d233a

 [ppc64le]
-manylinux2014 = quay.io/pypa/manylinux2014_ppc64le:2021-02-20-2c345f8
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_ppc64le:2021-02-20-2c345f8
+manylinux2014 = quay.io/pypa/manylinux2014_ppc64le:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_ppc64le:2021-05-01-28d233a

 [s390x]
-manylinux2014 = quay.io/pypa/manylinux2014_s390x:2021-02-20-2c345f8
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_s390x:2021-02-20-2c345f8
-
+manylinux2014 = quay.io/pypa/manylinux2014_s390x:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_s390x:2021-05-01-28d233a
@@ -9,7 +9,18 @@ else:
    from typing import Final, Literal, TypedDict


-__all__ = ("Final", "Literal", "TypedDict", "Set", "Union", "PopenBytes", "PathOrStr", "PlatformName", "PLATFORMS", "assert_never")
+__all__ = (
+    "Final",
+    "Literal",
+    "TypedDict",
+    "Set",
+    "Union",
+    "PopenBytes",
+    "PathOrStr",
+    "PlatformName",
+    "PLATFORMS",
+    "assert_never",
+)


 if TYPE_CHECKING:
@@ -25,4 +36,4 @@ PLATFORMS: Final[Set[PlatformName]] = {"linux", "macos", "windows"}


 def assert_never(value: NoReturn) -> NoReturn:
-    assert False, f'Unhandled value: {value} ({type(value).__name__})'  # noqa: B011
+    assert False, f"Unhandled value: {value} ({type(value).__name__})"  # noqa: B011
@@ -22,35 +22,35 @@ from .architecture import Architecture
 from .environment import ParsedEnvironment
 from .typing import PathOrStr, PlatformName

-resources_dir = Path(__file__).parent / 'resources'
+resources_dir = Path(__file__).parent / "resources"

-get_pip_script = resources_dir / 'get-pip.py'
+get_pip_script = resources_dir / "get-pip.py"
 install_certifi_script = resources_dir / "install_certifi.py"


 def prepare_command(command: str, **kwargs: PathOrStr) -> str:
-    '''
+    """
    Preprocesses a command by expanding variables like {python}.

    For example, used in the test_command option to specify the path to the
    project's root.
-    '''
-    return command.format(python='python', pip='pip', **kwargs)
+    """
+    return command.format(python="python", pip="pip", **kwargs)


 def get_build_verbosity_extra_flags(level: int) -> List[str]:
    if level > 0:
-        return ['-' + level * 'v']
+        return ["-" + level * "v"]
    elif level < 0:
-        return ['-' + -level * 'q']
+        return ["-" + -level * "q"]
    else:
        return []


 def read_python_configs(config: PlatformName) -> List[Dict[str, str]]:
-    input_file = resources_dir / 'build-platforms.toml'
+    input_file = resources_dir / "build-platforms.toml"
    loaded_file = toml.load(input_file)
-    results: List[Dict[str, str]] = list(loaded_file[config]['python_configurations'])
+    results: List[Dict[str, str]] = list(loaded_file[config]["python_configurations"])
    return results


@@ -62,7 +62,9 @@ class IdentifierSelector:
    numeric digits before the first dash.
    """

-    def __init__(self, *, build_config: str, skip_config: str, requires_python: Optional[SpecifierSet] = None):
+    def __init__(
+        self, *, build_config: str, skip_config: str, requires_python: Optional[SpecifierSet] = None
+    ):
        self.build_patterns = build_config.split()
        self.skip_patterns = skip_config.split()
        self.requires_python = requires_python
@@ -70,14 +72,16 @@ class IdentifierSelector:
    def __call__(self, build_id: str) -> bool:
        # Filter build selectors by python_requires if set
        if self.requires_python is not None:
-            py_ver_str = build_id.split('-')[0]
+            py_ver_str = build_id.split("-")[0]
            major = int(py_ver_str[2])
            minor = int(py_ver_str[3:])
            version = Version(f"{major}.{minor}.99")
            if not self.requires_python.contains(version):
                return False

-        build_patterns = itertools.chain.from_iterable(bracex.expand(p) for p in self.build_patterns)
+        build_patterns = itertools.chain.from_iterable(
+            bracex.expand(p) for p in self.build_patterns
+        )
        skip_patterns = itertools.chain.from_iterable(bracex.expand(p) for p in self.skip_patterns)

        build: bool = any(fnmatch.fnmatch(build_id, pat) for pat in build_patterns)
@@ -120,14 +124,14 @@ class Unbuffered:


 def download(url: str, dest: Path) -> None:
-    print(f'+ Download {url} to {dest}')
+    print(f"+ Download {url} to {dest}")
    dest_dir = dest.parent
    if not dest_dir.exists():
        dest_dir.mkdir(parents=True)

    # we've had issues when relying on the host OS' CA certificates on Windows,
    # so we use certifi (this sounds odd but requests also does this by default)
-    cafile = os.environ.get('SSL_CERT_FILE', certifi.where())
+    cafile = os.environ.get("SSL_CERT_FILE", certifi.where())
    context = ssl.create_default_context(cafile=cafile)
    repeat_num = 3
    for i in range(repeat_num):
@@ -152,17 +156,15 @@ class DependencyConstraints:
        self.base_file_path = base_file_path.resolve()

    @staticmethod
-    def with_defaults() -> 'DependencyConstraints':
-        return DependencyConstraints(
-            base_file_path=resources_dir / 'constraints.txt'
-        )
+    def with_defaults() -> "DependencyConstraints":
+        return DependencyConstraints(base_file_path=resources_dir / "constraints.txt")

    def get_for_python_version(self, version: str) -> Path:
-        version_parts = version.split('.')
+        version_parts = version.split(".")

        # try to find a version-specific dependency file e.g. if
        # ./constraints.txt is the base, look for ./constraints-python27.txt
-        specific_stem = self.base_file_path.stem + f'-python{version_parts[0]}{version_parts[1]}'
+        specific_stem = self.base_file_path.stem + f"-python{version_parts[0]}{version_parts[1]}"
        specific_name = specific_stem + self.base_file_path.suffix
        specific_file_path = self.base_file_path.with_name(specific_name)
        if specific_file_path.exists():
@@ -171,7 +173,7 @@ class DependencyConstraints:
            return self.base_file_path

    def __repr__(self) -> str:
-        return f'{self.__class__.__name__}{self.base_file_path!r})'
+        return f"{self.__class__.__name__}{self.base_file_path!r})"


 class BuildOptions(NamedTuple):
@@ -195,7 +197,8 @@ class BuildOptions(NamedTuple):

 class NonPlatformWheelError(Exception):
    def __init__(self) -> None:
-        message = textwrap.dedent('''
+        message = textwrap.dedent(
+            """
            cibuildwheel: Build failed because a pure Python wheel was generated.

            If you intend to build a pure-Python wheel, you don't need cibuildwheel - use
@@ -203,66 +206,65 @@ class NonPlatformWheelError(Exception):

            If you expected a platform wheel, check your project configuration, or run
            cibuildwheel with CIBW_BUILD_VERBOSITY=1 to view build logs.
-        ''')
+            """
+        )

        super().__init__(message)


 def strtobool(val: str) -> bool:
-    if val.lower() in ('y', 'yes', 't', 'true', 'on', '1'):
-        return True
-    return False
+    return val.lower() in {"y", "yes", "t", "true", "on", "1"}


 class CIProvider(Enum):
-    travis_ci = 'travis'
-    appveyor = 'appveyor'
-    circle_ci = 'circle_ci'
-    azure_pipelines = 'azure_pipelines'
-    github_actions = 'github_actions'
-    gitlab = 'gitlab'
-    other = 'other'
+    travis_ci = "travis"
+    appveyor = "appveyor"
+    circle_ci = "circle_ci"
+    azure_pipelines = "azure_pipelines"
+    github_actions = "github_actions"
+    gitlab = "gitlab"
+    other = "other"


 def detect_ci_provider() -> Optional[CIProvider]:
-    if 'TRAVIS' in os.environ:
+    if "TRAVIS" in os.environ:
        return CIProvider.travis_ci
-    elif 'APPVEYOR' in os.environ:
+    elif "APPVEYOR" in os.environ:
        return CIProvider.appveyor
-    elif 'CIRCLECI' in os.environ:
+    elif "CIRCLECI" in os.environ:
        return CIProvider.circle_ci
-    elif 'AZURE_HTTP_USER_AGENT' in os.environ:
+    elif "AZURE_HTTP_USER_AGENT" in os.environ:
        return CIProvider.azure_pipelines
-    elif 'GITHUB_ACTIONS' in os.environ:
+    elif "GITHUB_ACTIONS" in os.environ:
        return CIProvider.github_actions
-    elif 'GITLAB_CI' in os.environ:
+    elif "GITLAB_CI" in os.environ:
        return CIProvider.gitlab
-    elif strtobool(os.environ.get('CI', 'false')):
+    elif strtobool(os.environ.get("CI", "false")):
        return CIProvider.other
    else:
        return None


 def unwrap(text: str) -> str:
-    '''
+    """
    Unwraps multi-line text to a single line
-    '''
+    """
    # remove initial line indent
    text = textwrap.dedent(text)
    # remove leading/trailing whitespace
    text = text.strip()
    # remove consecutive whitespace
-    return re.sub(r'\s+', ' ', text)
+    return re.sub(r"\s+", " ", text)


@contextlib.contextmanager
 def print_new_wheels(msg: str, output_dir: Path) -> Iterator[None]:
-    '''
+    """
    Prints the new items in a directory upon exiting. The message to display
    can include {n} for number of wheels, {s} for total number of seconds,
    and/or {m} for total number of minutes. Does not print anything if this
    exits via exception.
-    '''
+    """

    start_time = time.time()
    existing_contents = set(output_dir.iterdir())
@@ -24,28 +24,36 @@ from .util import (
    read_python_configs,
 )

-IS_RUNNING_ON_AZURE = Path('C:\\hostedtoolcache').exists()
-IS_RUNNING_ON_TRAVIS = os.environ.get('TRAVIS_OS_NAME') == 'windows'
+IS_RUNNING_ON_AZURE = Path("C:\\hostedtoolcache").exists()


-def call(args: Sequence[PathOrStr], env: Optional[Dict[str, str]] = None,
-         cwd: Optional[str] = None) -> None:
-    print('+ ' + ' '.join(str(a) for a in args))
+def call(
+    args: Sequence[PathOrStr], env: Optional[Dict[str, str]] = None, cwd: Optional[str] = None
+) -> None:
+    print("+ " + " ".join(str(a) for a in args))
    # we use shell=True here, even though we don't need a shell due to a bug
    # https://bugs.python.org/issue8557
    subprocess.run([str(a) for a in args], env=env, cwd=cwd, shell=True, check=True)


 def shell(command: str, env: Optional[Dict[str, str]] = None, cwd: Optional[str] = None) -> None:
-    print(f'+ {command}')
+    print(f"+ {command}")
    subprocess.run(command, env=env, cwd=cwd, shell=True, check=True)


 def get_nuget_args(version: str, arch: str) -> List[str]:
-    python_name = 'python' if version[0] == '3' else 'python2'
-    if arch == '32':
-        python_name = python_name + 'x86'
-    return [python_name, '-Version', version, '-OutputDirectory', 'C:\\cibw\\python']
+    python_name = "python" if version[0] == "3" else "python2"
+    if arch == "32":
+        python_name += "x86"
+    return [
+        python_name,
+        "-Version",
+        version,
+        "-FallbackSource",
+        "https://api.nuget.org/v3/index.json",
+        "-OutputDirectory",
+        "C:\\cibw\\python",
+    ]


 class PythonConfiguration(NamedTuple):
@@ -56,28 +64,30 @@ class PythonConfiguration(NamedTuple):


 def get_python_configurations(
-        build_selector: BuildSelector,
-        architectures: Set[Architecture],
+    build_selector: BuildSelector,
+    architectures: Set[Architecture],
 ) -> List[PythonConfiguration]:

-    full_python_configs = read_python_configs('windows')
+    full_python_configs = read_python_configs("windows")

    python_configurations = [PythonConfiguration(**item) for item in full_python_configs]

    map_arch = {
-        '32': Architecture.x86,
-        '64': Architecture.AMD64,
+        "32": Architecture.x86,
+        "64": Architecture.AMD64,
    }

-    custom_compiler = os.environ.get('DISTUTILS_USE_SDK') and os.environ.get('MSSdk')
-    if IS_RUNNING_ON_TRAVIS and not custom_compiler:
-        # cannot install VCForPython27.msi which is needed for compiling C software
-        # try with (and similar): msiexec /i VCForPython27.msi ALLUSERS=1 ACCEPT=YES /passive
-        python_configurations = [c for c in python_configurations if not c.version.startswith('2.7')]
+    # Only supported with custom compiler, since MS removed the 2008 compiler download
+    custom_compiler = os.environ.get("DISTUTILS_USE_SDK") and os.environ.get("MSSdk")
+    if not custom_compiler:
+        python_configurations = [
+            c for c in python_configurations if not c.version.startswith("2.7")
+        ]

    # skip builds as required
    python_configurations = [
-        c for c in python_configurations
+        c
+        for c in python_configurations
        if build_selector(c.identifier) and map_arch[c.arch] in architectures
    ]

@@ -91,86 +101,120 @@ def extract_zip(zip_src: Path, dest: Path) -> None:

 def install_cpython(version: str, arch: str, nuget: Path) -> Path:
    nuget_args = get_nuget_args(version, arch)
-    installation_path = Path(nuget_args[-1]) / (nuget_args[0] + '.' + version) / 'tools'
-    call([nuget, 'install', *nuget_args])
+    installation_path = Path(nuget_args[-1]) / (nuget_args[0] + "." + version) / "tools"
+    call([nuget, "install", *nuget_args])
    return installation_path


 def install_pypy(version: str, arch: str, url: str) -> Path:
-    assert arch == '32'
+    assert arch == "32"
    # Inside the PyPy zip file is a directory with the same name
-    zip_filename = url.rsplit('/', 1)[-1]
+    zip_filename = url.rsplit("/", 1)[-1]
    extension = ".zip"
    assert zip_filename.endswith(extension)
-    installation_path = Path('C:\\cibw') / zip_filename[:-len(extension)]
+    installation_path = Path("C:\\cibw") / zip_filename[: -len(extension)]
    if not installation_path.exists():
-        pypy_zip = Path('C:\\cibw') / zip_filename
+        pypy_zip = Path("C:\\cibw") / zip_filename
        download(url, pypy_zip)
        # Extract to the parent directory because the zip file still contains a directory
        extract_zip(pypy_zip, installation_path.parent)
-        pypy_exe = 'pypy3.exe' if version[0] == '3' else 'pypy.exe'
-        (installation_path / 'python.exe').symlink_to(installation_path / pypy_exe)
+        pypy_exe = "pypy3.exe" if version[0] == "3" else "pypy.exe"
+        (installation_path / "python.exe").symlink_to(installation_path / pypy_exe)
    return installation_path


-def setup_python(python_configuration: PythonConfiguration, dependency_constraint_flags: Sequence[PathOrStr], environment: ParsedEnvironment) -> Dict[str, str]:
-    nuget = Path('C:\\cibw\\nuget.exe')
+def setup_python(
+    python_configuration: PythonConfiguration,
+    dependency_constraint_flags: Sequence[PathOrStr],
+    environment: ParsedEnvironment,
+) -> Dict[str, str]:
+    nuget = Path("C:\\cibw\\nuget.exe")
    if not nuget.exists():
-        log.step('Downloading nuget...')
-        download('https://dist.nuget.org/win-x86-commandline/latest/nuget.exe', nuget)
+        log.step("Downloading nuget...")
+        download("https://dist.nuget.org/win-x86-commandline/latest/nuget.exe", nuget)

    implementation_id = python_configuration.identifier.split("-")[0]
-    log.step(f'Installing Python {implementation_id}...')
+    log.step(f"Installing Python {implementation_id}...")

-    if implementation_id.startswith('cp'):
-        installation_path = install_cpython(python_configuration.version, python_configuration.arch, nuget)
-    elif implementation_id.startswith('pp'):
+    if implementation_id.startswith("cp"):
+        installation_path = install_cpython(
+            python_configuration.version, python_configuration.arch, nuget
+        )
+    elif implementation_id.startswith("pp"):
        assert python_configuration.url is not None
-        installation_path = install_pypy(python_configuration.version, python_configuration.arch, python_configuration.url)
+        installation_path = install_pypy(
+            python_configuration.version, python_configuration.arch, python_configuration.url
+        )
    else:
        raise ValueError("Unknown Python implementation")

-    assert (installation_path / 'python.exe').exists()
+    assert (installation_path / "python.exe").exists()

-    log.step('Setting up build environment...')
+    log.step("Setting up build environment...")

    # set up PATH and environment variables for run_with_env
    env = os.environ.copy()
-    env['PYTHON_VERSION'] = python_configuration.version
-    env['PYTHON_ARCH'] = python_configuration.arch
-    env['PATH'] = os.pathsep.join([
-        str(installation_path),
-        str(installation_path / 'Scripts'),
-        env['PATH']
-    ])
-    env['PIP_DISABLE_PIP_VERSION_CHECK'] = '1'
+    env["PYTHON_VERSION"] = python_configuration.version
+    env["PYTHON_ARCH"] = python_configuration.arch
+    env["PATH"] = os.pathsep.join(
+        [str(installation_path), str(installation_path / "Scripts"), env["PATH"]]
+    )
+    env["PIP_DISABLE_PIP_VERSION_CHECK"] = "1"

    # update env with results from CIBW_ENVIRONMENT
    env = environment.as_dictionary(prev_environment=env)

    # for the logs - check we're running the right version of python
-    call(['where', 'python'], env=env)
-    call(['python', '--version'], env=env)
-    call(['python', '-c', '"import struct; print(struct.calcsize(\'P\') * 8)"'], env=env)
-    where_python = subprocess.run(['where', 'python'], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE).stdout.splitlines()[0].strip()
-    if where_python != str(installation_path / 'python.exe'):
-        print("cibuildwheel: python available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert python above it.", file=sys.stderr)
+    call(["where", "python"], env=env)
+    call(["python", "--version"], env=env)
+    call(["python", "-c", "\"import struct; print(struct.calcsize('P') * 8)\""], env=env)
+    where_python = (
+        subprocess.run(
+            ["where", "python"],
+            env=env,
+            universal_newlines=True,
+            check=True,
+            stdout=subprocess.PIPE,
+        )
+        .stdout.splitlines()[0]
+        .strip()
+    )
+    if where_python != str(installation_path / "python.exe"):
+        print(
+            "cibuildwheel: python available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert python above it.",
+            file=sys.stderr,
+        )
        sys.exit(1)

    # make sure pip is installed
-    if not (installation_path / 'Scripts' / 'pip.exe').exists():
-        call(['python', get_pip_script, *dependency_constraint_flags], env=env, cwd="C:\\cibw")
-    assert (installation_path / 'Scripts' / 'pip.exe').exists()
-    where_pip = subprocess.run(['where', 'pip'], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE).stdout.splitlines()[0].strip()
-    if where_pip.strip() != str(installation_path / 'Scripts' / 'pip.exe'):
-        print("cibuildwheel: pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it.", file=sys.stderr)
+    if not (installation_path / "Scripts" / "pip.exe").exists():
+        call(["python", get_pip_script, *dependency_constraint_flags], env=env, cwd="C:\\cibw")
+    assert (installation_path / "Scripts" / "pip.exe").exists()
+    where_pip = (
+        subprocess.run(
+            ["where", "pip"], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE
+        )
+        .stdout.splitlines()[0]
+        .strip()
+    )
+    if where_pip.strip() != str(installation_path / "Scripts" / "pip.exe"):
+        print(
+            "cibuildwheel: pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it.",
+            file=sys.stderr,
+        )
        sys.exit(1)

-    log.step('Installing build tools...')
+    log.step("Installing build tools...")

-    call(['python', '-m', 'pip', 'install', '--upgrade', 'pip', *dependency_constraint_flags], env=env)
-    call(['pip', '--version'], env=env)
-    call(['pip', 'install', '--upgrade', 'setuptools', 'wheel', *dependency_constraint_flags], env=env)
+    call(
+        ["python", "-m", "pip", "install", "--upgrade", "pip", *dependency_constraint_flags],
+        env=env,
+    )
+    call(["pip", "--version"], env=env)
+    call(
+        ["pip", "install", "--upgrade", "setuptools", "wheel", *dependency_constraint_flags],
+        env=env,
+    )

    return env

@@ -187,39 +231,39 @@ def pep_518_cp35_workaround(package_dir: Path, env: Dict[str, str]) -> None:
    mostly "isolated".
    """

-    pyproject_path = package_dir / 'pyproject.toml'
+    pyproject_path = package_dir / "pyproject.toml"

    if pyproject_path.exists():
        data = toml.load(pyproject_path)
-        requirements = (
-            data['build-system'].get('requires', [])
-            if 'build-system' in data
-            else []
-        )
+        requirements = data["build-system"].get("requires", []) if "build-system" in data else []

        if requirements:
-            log.step('Performing PEP518 workaround...')
+            log.step("Performing PEP518 workaround...")
            with tempfile.TemporaryDirectory() as d:
                reqfile = Path(d) / "requirements.txt"
-                with reqfile.open('w') as f:
+                with reqfile.open("w") as f:
                    for r in requirements:
                        print(r, file=f)
-                call(['pip', 'install', '-r', reqfile], env=env)
+                call(["pip", "install", "-r", reqfile], env=env)


 def build(options: BuildOptions) -> None:
-    temp_dir = Path(tempfile.mkdtemp(prefix='cibuildwheel'))
-    built_wheel_dir = temp_dir / 'built_wheel'
-    repaired_wheel_dir = temp_dir / 'repaired_wheel'
+    temp_dir = Path(tempfile.mkdtemp(prefix="cibuildwheel"))
+    built_wheel_dir = temp_dir / "built_wheel"
+    repaired_wheel_dir = temp_dir / "repaired_wheel"

    try:
        if options.before_all:
-            log.step('Running before_all...')
+            log.step("Running before_all...")
            env = options.environment.as_dictionary(prev_environment=os.environ)
-            before_all_prepared = prepare_command(options.before_all, project='.', package=options.package_dir)
+            before_all_prepared = prepare_command(
+                options.before_all, project=".", package=options.package_dir
+            )
            shell(before_all_prepared, env=env)

-        python_configurations = get_python_configurations(options.build_selector, options.architectures)
+        python_configurations = get_python_configurations(
+            options.build_selector, options.architectures
+        )

        for config in python_configurations:
            log.build_start(config.identifier)
@@ -227,7 +271,8 @@ def build(options: BuildOptions) -> None:
            dependency_constraint_flags: Sequence[PathOrStr] = []
            if options.dependency_constraints:
                dependency_constraint_flags = [
-                    '-c', options.dependency_constraints.get_for_python_version(config.version)
+                    "-c",
+                    options.dependency_constraints.get_for_python_version(config.version),
                ]

            # install Python
@@ -235,92 +280,106 @@ def build(options: BuildOptions) -> None:

            # run the before_build command
            if options.before_build:
-                log.step('Running before_build...')
-                before_build_prepared = prepare_command(options.before_build, project='.', package=options.package_dir)
+                log.step("Running before_build...")
+                before_build_prepared = prepare_command(
+                    options.before_build, project=".", package=options.package_dir
+                )
                shell(before_build_prepared, env=env)

            # activate the PEP 518 patch if on Windows Python 3.5
            # (will only have an effect if PEP 517 builds are used):
-            if config.version.startswith('3.5'):
+            if config.version.startswith("3.5"):
                pep_518_cp35_workaround(options.package_dir, env)

-            log.step('Building wheel...')
+            log.step("Building wheel...")
            if built_wheel_dir.exists():
                shutil.rmtree(built_wheel_dir)
            built_wheel_dir.mkdir(parents=True)
            # Path.resolve() is needed. Without it pip wheel may try to fetch package from pypi.org
-            # see https://github.com/joerick/cibuildwheel/pull/369
-            call([
-                'pip', 'wheel',
-                options.package_dir.resolve(),
-                '-w', built_wheel_dir,
-                '--no-deps',
-                *get_build_verbosity_extra_flags(options.build_verbosity)
-            ], env=env)
+            # see https://github.com/pypa/cibuildwheel/pull/369
+            call(
+                [
+                    "pip",
+                    "wheel",
+                    options.package_dir.resolve(),
+                    "-w",
+                    built_wheel_dir,
+                    "--no-deps",
+                    *get_build_verbosity_extra_flags(options.build_verbosity),
+                ],
+                env=env,
+            )

-            built_wheel = next(built_wheel_dir.glob('*.whl'))
+            built_wheel = next(built_wheel_dir.glob("*.whl"))

            # repair the wheel
            if repaired_wheel_dir.exists():
                shutil.rmtree(repaired_wheel_dir)
            repaired_wheel_dir.mkdir(parents=True)

-            if built_wheel.name.endswith('none-any.whl'):
+            if built_wheel.name.endswith("none-any.whl"):
                raise NonPlatformWheelError()

            if options.repair_command:
-                log.step('Repairing wheel...')
-                repair_command_prepared = prepare_command(options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir)
+                log.step("Repairing wheel...")
+                repair_command_prepared = prepare_command(
+                    options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir
+                )
                shell(repair_command_prepared, env=env)
            else:
                shutil.move(str(built_wheel), repaired_wheel_dir)

-            repaired_wheel = next(repaired_wheel_dir.glob('*.whl'))
+            repaired_wheel = next(repaired_wheel_dir.glob("*.whl"))

            if options.test_command and options.test_selector(config.identifier):
-                log.step('Testing wheel...')
+                log.step("Testing wheel...")
                # set up a virtual environment to install and test from, to make sure
                # there are no dependencies that were pulled in at build time.
-                call(['pip', 'install', 'virtualenv', *dependency_constraint_flags], env=env)
+                call(["pip", "install", "virtualenv", *dependency_constraint_flags], env=env)
                venv_dir = Path(tempfile.mkdtemp())

                # Use --no-download to ensure determinism by using seed libraries
                # built into virtualenv
-                call(['python', '-m', 'virtualenv', '--no-download', venv_dir], env=env)
+                call(["python", "-m", "virtualenv", "--no-download", venv_dir], env=env)

                virtualenv_env = env.copy()
-                virtualenv_env['PATH'] = os.pathsep.join([
-                    str(venv_dir / 'Scripts'),
-                    virtualenv_env['PATH'],
-                ])
+                virtualenv_env["PATH"] = os.pathsep.join(
+                    [
+                        str(venv_dir / "Scripts"),
+                        virtualenv_env["PATH"],
+                    ]
+                )

                # check that we are using the Python from the virtual environment
-                call(['which', 'python'], env=virtualenv_env)
+                call(["where", "python"], env=virtualenv_env)

                if options.before_test:
                    before_test_prepared = prepare_command(
                        options.before_test,
-                        project='.',
-                        package=options.package_dir
+                        project=".",
+                        package=options.package_dir,
                    )
                    shell(before_test_prepared, env=virtualenv_env)

                # install the wheel
-                call(['pip', 'install', str(repaired_wheel) + options.test_extras], env=virtualenv_env)
+                call(
+                    ["pip", "install", str(repaired_wheel) + options.test_extras],
+                    env=virtualenv_env,
+                )

                # test the wheel
                if options.test_requires:
-                    call(['pip', 'install'] + options.test_requires, env=virtualenv_env)
+                    call(["pip", "install"] + options.test_requires, env=virtualenv_env)

                # run the tests from c:\, with an absolute path in the command
                # (this ensures that Python runs the tests against the installed wheel
                # and not the repo code)
                test_command_prepared = prepare_command(
                    options.test_command,
-                    project=Path('.').resolve(),
-                    package=options.package_dir.resolve()
+                    project=Path(".").resolve(),
+                    package=options.package_dir.resolve(),
                )
-                shell(test_command_prepared, cwd='c:\\', env=virtualenv_env)
+                shell(test_command_prepared, cwd="c:\\", env=virtualenv_env)

                # clean up
                shutil.rmtree(venv_dir)
@@ -329,5 +388,7 @@ def build(options: BuildOptions) -> None:
            shutil.move(str(repaired_wheel), options.output_dir)
            log.build_end()
    except subprocess.CalledProcessError as error:
-        log.step_end_with_error(f'Command {error.cmd} failed with code {error.returncode}. {error.stdout}')
+        log.step_end_with_error(
+            f"Command {error.cmd} failed with code {error.returncode}. {error.stdout}"
+        )
        sys.exit(1)
@@ -2,12 +2,14 @@
 title: Contributing
 ---

-Wheel-building can be pretty complex. I expect users to find many edge-cases - please help the rest of the community out by documenting these, adding features to support them, and reporting bugs.
+Wheel-building can be pretty complex. We expect users to find edge-cases - please help the rest of the community out by documenting these, adding features to support them, and reporting bugs.

-I plan to be pretty liberal in accepting pull requests, as long as they align with the design goals below.
+If you have an idea for a modification or feature, it's probably best to raise an issue first and discuss it with the maintainer team. Once we have rough consensus on a design, begin work in a PR.

 `cibuildwheel` is indie open source. We're not paid to work on this.

+Everyone contributing to the cibuildwheel project is expected to follow the [PSF Code of Conduct](https://github.com/pypa/.github/blob/main/CODE_OF_CONDUCT.md).
+
 Design Goals
 ------------

@@ -27,12 +29,12 @@ cibuildwheel doesn't really do anything itself - it's always deferring to other

 We're not responsible for errors in those tools, for fixing errors/crashes there. But cibuildwheel's job is providing users with an 'integrated' user experience across those tools. We provide an abstraction. The user says 'build me some wheels', not 'open the docker container, build a wheel with pip, fix up the symbols with auditwheel' etc.  However, errors have a habit of breaking abstractions. And this is where users get confused, because the mechanism of cibuildwheel is laid bare, and they must understand a little bit how it works to debug.

-So, if we can, I'd like to improve the experience on errors as well. In [this](https://github.com/joerick/cibuildwheel/issues/139) case, it takes a bit of knowledge to understand that the linux builds are happening in a totally different OS via docker, that the linked symbols won't match, that auditwheel will fail because of this. A problem with how the tools fit together, instead of the tools themselves.
+So, if we can, I'd like to improve the experience on errors as well. In [this](https://github.com/pypa/cibuildwheel/issues/139) case, it takes a bit of knowledge to understand that the Linux builds are happening in a different OS via Docker, that the linked symbols won't match, that auditwheel will fail because of this. A problem with how the tools fit together, instead of the tools themselves.

 Maintainer notes
 ----------------

-## Local testing
+### Local testing

 You should run:

@@ -44,10 +46,9 @@ pip install -e .[dev]

 To prepare a development environment.

-## Testing minimal configs
+### Testing sample configs

-
-cibuildwheel's _minimal_ example configs can be tested on a simple project on cibuildwheel's existing CI. These should be run whenever the minimal configs change.
+cibuildwheel's  example configs can be tested on a simple project on cibuildwheel's existing CI. These should be run whenever the minimal configs change.

 To test minimal configs, make sure you have a clean git repo, then run the script:

@@ -57,9 +58,15 @@ bin/run_example_ci_configs.py

 The script will create an isolated 'orphan' commit containing all the minimal config CI files, and a simple C extension project, and push that to a branch on the `origin` repo. The project's CI is already set up to run on branch push, so will begin testing.

+You can test any other configs using `bin/run_example_ci_configs.py CONFIG_PATH`, e.g.
+
+```bash
+bin/run_example_ci_configs.py examples/github-with-qemu.yml
+```
+
 The script then outputs a Markdown table that can be copy/pasted into a PR to monitor and record the test.

-## Preparing environments
+### Preparing environments

 This has been moved to using docker, so you only need the following instructions if you add `--no-docker` to avoid using docker.

@@ -92,16 +99,9 @@ And, you need to install the requirements into each environment:
 for f in env*/bin/pip; do $f install pip-tools; done
 ```

+### Making a release

-## Making a release
-
-Before making a release, ensure pinned dependencies are up-to-date. Run the script:
-
-```bash
-bin/make_dependency_update_pr.py
-```
-
-If updates are needed, this will push a PR with those updates for the CI to test. Once green, merge this PR.
+Before making a release, ensure pinned dependencies are up-to-date. Autoupdates are run weekly, with a PR being raised with any changes as required, so just make sure the latest one is merged before continuing.

 Then, increment the project version number using:

@@ -119,3 +119,5 @@ python setup.py sdist bdist_wheel
 twine upload dist/*
 git push && git push --tags
 ```
+
+Then head to https://github.com/pypa/cibuildwheel/releases and create a GitHub release from the new tag, pasting in the changelog entry.
@@ -30,9 +30,11 @@ For more details see https://en.cppreference.com/w/cpp/compiler_support, https:/

 ## Windows and Python 2.7

-Visual C++ for Python 2.7 does not support modern C++ standards (i.e., C++11 and later). When building on Appveyor, you will need to either use the "Visual Studio 2017" or "Visual Studio 2019" image, but Python 2.7 is not supported on these images - skip it by setting `CIBW_SKIP=cp27-win*`.
+In previous years, Microsoft distributed a compiler toolchain called 'Visual C++ for Python 2.7', which was a distribution of MSVC 2008 that was created to make it easier to build Python 2.7 extensions on Windows, because it was fully compatible with the toolchain that built Python 2.7.

-There is an optional workaround for this, though: the pybind11 project argues and shows that it is [possible to compile Python 2.7 extension with a newer compiler](https://pybind11.readthedocs.io/en/stable/faq.html#working-with-ancient-visual-studio-2008-builds-on-windows) and has an example project showing how to do this: https://github.com/pybind/python_example. The main catch is that a user might need to install [a newer "Microsoft Visual C++ Redistributable"](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads), since the newer C++ standard library's binaries are not included by default with the Python 2.7 installation.
+This toolchain does not support modern C++ standards (i.e., C++11 and later). And it is hard to find this toolchain these days, since Microsoft removed the download for the required Visual Studio 2008 needed to build a native extension in April, 2021. So, by default, cibuildwheel does not attempt to build Python 2.7 extensions on Windows.
+
+There is an optional workaround, though: the pybind11 project argues and shows that it is [possible to compile Python 2.7 extension with a newer compiler](https://pybind11.readthedocs.io/en/stable/faq.html#working-with-ancient-visual-studio-2008-builds-on-windows) and has an example project showing how to do this: https://github.com/pybind/python_example. The main catch is that a user might need to install [a newer "Microsoft Visual C++ Redistributable"](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads), since the newer C++ standard library's binaries are not included by default with the Python 2.7 installation.

 Forcing `distutils` or `setuptools` to use a more recent version of MSVC that supports modern C++ can be done in the following way:

@@ -2,6 +2,7 @@
 # name: required, printed name
 # gh: GitHub repo (eventually a url: could be added for non-github projects)
 # stars: GitHub repo (optional, if different from package, such as for Twisted)
+# pypi: The pypi name, if different from the GitHub package name
 # os: Operating system list, [windows, apple, linux] (optional)
 # ci: [appveyor, github, azurepipelines, circleci, gitlab, travisci] (optional)
 # notes: (text, optional)
@@ -29,6 +30,7 @@

 - name: Parselmouth
  gh: YannickJadoul/Parselmouth
+  pypi: praat-parselmouth
  notes: A Python interface to the Praat software package, using pybind11, C++17 and CMake, with the core Praat static library built only once and shared between wheels.
  ci: [github]
  os: [windows, apple, linux]
@@ -82,6 +84,7 @@

 - name: PyAV
  gh: PyAV-Org/PyAV
+  pypi: av
  ci: [github]
  os: [windows, apple, linux]
  notes: Pythonic bindings for FFmpeg's libraries.
@@ -109,6 +112,7 @@

 - name: etebase-py
  gh: etesync/etebase-py
+  pypi: etebase
  notes: Python bindings to a Rust library using `setuptools-rust`, and `sccache` for improved speed.
  ci: [travisci]
  os: [linux]
@@ -175,6 +179,7 @@

 - name: jq.py
  gh: mwilliamson/jq.py
+  pypi: jq
  ci: [travisci]
  os: [apple, linux]

@@ -226,6 +231,7 @@

 - name: Dependency Injector
  gh: ets-labs/python-dependency-injector
+  pypi: dependency-injector
  ci: [travisci]
  os: [windows, apple, linux]
  notes: Dependency injection framework for Python, uses Windows TravisCI
@@ -237,11 +243,13 @@

 - name: PyTables
  gh: PyTables/PyTables
+  pypi: tables
  ci: [github]
  os: [windows, apple, linux]

 - name: dd-trace-py
  gh: DataDog/dd-trace-py
+  pypi: ddtrace
  ci: [github]
  os: [windows, apple, linux]
  notes: Uses custom alternate arch emulation on GitHub
@@ -270,6 +278,7 @@
 - name: MyPy
  gh: mypyc/mypy_mypyc-wheels
  stars: python/mypy
+  pypi: mypy
  ci: [github]
  os: [apple, linux, windows]
  notes: MyPyC, the compiled component of MyPy.
@@ -277,6 +286,7 @@
 - name: Imagecodecs (fork)
  gh: czaki/imagecodecs_build
  stars: cgohlke/imagecodecs
+  pypi: imagecodecs
  ci: [azurepipelines]
  ci_config: azure-pipelines.yaml
  os: [apple, linux]
@@ -293,3 +303,63 @@
  ci: [github]
  os: [apple, linux, windows]
  notes: Time mocking library using only the CPython C API.
+
+- name: polaroid
+  gh: daggy1234/polaroid
+  ci: [github]
+  os: [apple, linux, windows]
+  notes: Full range of wheels for setuptools rust, with auto release and PyPI deploy.
+
+- name: python-snappy
+  gh: andrix/python-snappy
+  ci: [github]
+  os: [apple, linux, windows]
+
+- name: sourmash
+  gh: dib-lab/sourmash
+  ci: [github]
+  os: [apple, linux, windows]
+
+- name: markupsafe
+  gh: pallets/markupsafe
+  ci: [github]
+  os: [apple, linux, windows]
+
+- name: SiPM
+  gh: EdoPro98/SimSiPM
+  ci: [github]
+  os: [apple, linux]
+  notes: High performance library for SiPM detectors simulation using C++17, OpenMP and AVX2 intrinsics.
+
+- name: CorrectionLib
+  gh: cms-nanoAOD/correctionlib
+  ci: [github]
+  os: [apple, linux]
+  notes: Structured JSON powered correction library for HEP, designed for the CMS experiment at CERN.
+
+- name: GSD
+  gh: glotzerlab/gsd
+  ci: [github]
+  os: [apple, linux, windows]
+  notes: Cython and NumPy project with 64-bit wheels.
+
+- name: PyGLM
+  gh: Zuzu-Typ/PyGLM
+  ci: [github]
+  os: [apple, linux, windows]
+
+- name: iDynTree
+  gh: robotology/idyntree
+  ci: [github]
+  os: [linux]
+  notes: Uses manylinux_2_24
+
+- name: H3-py
+  gh: uber/h3-py
+  ci: [github]
+  os: [apple, linux, windows]
+
+- name: DeepForest
+  gh: LAMDA-NJU/Deep-Forest
+  ci: [github]
+  os: [apple, linux, windows]
@@ -33,4 +33,4 @@ Obviously, manual steps are for chumps, so we can automate this a little by usin

 If you don't need much control over the release of a package, you can set up cibuildwheel to deliver the wheels straight to PyPI. This doesn't require anycloud storage to work - you just need to bump the version and tag it.

-[`examples/travis-ci-deploy.yml`](https://github.com/joerick/cibuildwheel/blob/master/examples/travis-ci-deploy.yml) and [`examples/github-deploy.yml`](https://github.com/joerick/cibuildwheel/blob/master/examples/github-deploy.yml) are example configurations that automatically upload wheels to PyPI. Also check out [this example repo](https://github.com/joerick/cibuildwheel-autopypi-example) for more detailed instructions on how to set this up.
+[`examples/travis-ci-deploy.yml`](https://github.com/pypa/cibuildwheel/blob/master/examples/travis-ci-deploy.yml) and [`examples/github-deploy.yml`](https://github.com/pypa/cibuildwheel/blob/master/examples/github-deploy.yml) are example configurations that automatically upload wheels to PyPI. Also check out [this example repo](https://github.com/pypa/cibuildwheel-autopypi-example) for more detailed instructions on how to set this up.
@@ -3,13 +3,14 @@

 p {
    margin-bottom: 12px;
+    line-height: 26px;
 }

 code {
    font-size: 85%;
    background-color: rgba(27,31,35,.05);
    border-radius: 3px;
-    padding: .2em .4em;
+    padding: .15em .4em;
    color: inherit;
    border: none;
    margin: 0 1px;
@@ -39,6 +40,14 @@ h1, h2, h3, h4, h5, h6 {
    white-space: normal;
 }

+.rst-content .admonition {
+  line-height: inherit;
+}
+
+.admonition code {
+  border: none;
+}
+
 /*
    Code block filename style

@@ -12,13 +12,13 @@ If your wheel didn't compile, check the list below for some debugging tips.

 - Windows: missing C feature. The Windows C compiler doesn't support C language features invented after 1990, so you'll have to backport your C code to C90. For me, this mostly involved putting my variable declarations at the top of the function like an animal.

- MacOS: calling cibuildwheel from a python3 script and getting a `ModuleNotFoundError`? Due to a (fixed) [bug](https://bugs.python.org/issue22490) in CPython, you'll need to [unset the `__PYVENV_LAUNCHER__` variable](https://github.com/joerick/cibuildwheel/issues/133#issuecomment-478288597) before activating a venv.
+- MacOS: calling cibuildwheel from a python3 script and getting a `ModuleNotFoundError`? Due to a (fixed) [bug](https://bugs.python.org/issue22490) in CPython, you'll need to [unset the `__PYVENV_LAUNCHER__` variable](https://github.com/pypa/cibuildwheel/issues/133#issuecomment-478288597) before activating a venv.

 ### Linux builds on Docker

 Linux wheels are built in the [`manylinux` docker images](https://github.com/pypa/manylinux) to provide binary compatible wheels on Linux, according to [PEP 571](https://www.python.org/dev/peps/pep-0571/). Because of this, when building with `cibuildwheel` on Linux, a few things should be taken into account:

- Programs and libraries cannot be installed on the Travis CI Ubuntu host with `apt-get`, but can be installed inside of the Docker image using `yum` or manually. The same goes for environment variables that are potentially needed to customize the wheel building. `cibuildwheel` supports this by providing the `CIBW_ENVIRONMENT` and `CIBW_BEFORE_BUILD` options to setup the build environment inside the running Docker image. See [the options docs](options.md#build-environment) for details on these options.
+- Programs and libraries are not installed on the Travis CI Ubuntu host, but rather should be installed inside of the Docker image (using `yum` for `manylinux2010` or `manylinux2014`, and `apt-get` for `manylinux_2_24`) or manually. The same goes for environment variables that are potentially needed to customize the wheel building. `cibuildwheel` supports this by providing the `CIBW_ENVIRONMENT` and `CIBW_BEFORE_BUILD` options to setup the build environment inside the running Docker image. See [the options docs](options.md#build-environment) for details on these options.

 - The project directory is mounted in the running Docker instance as `/project`, the output directory for the wheels as `/output`. In general, this is handled transparently by `cibuildwheel`. For a more finegrained level of control however, the root of the host file system is mounted as `/host`, allowing for example to access shared files, caches, etc. on the host file system.  Note that this is not available on CircleCI due to their Docker policies.

@@ -136,6 +136,36 @@ Here's an example GitHub Actions workflow with a job that builds for Apple Silic
 {% include "../examples/github-apple-silicon.yml" %}
 ```

+### Windows and Python 2.7
+
+Building 2.7 extensions on Windows is difficult, because the VS 2008 compiler that was used for the original Python compilation was discontinued in 2018, and has since been removed from Microsoft's downloads. Most people choose to not build Windows 2.7 wheels, or to override the compiler to something more modern.
+
+To override, you need to have a modern compiler toolchain activated, and set `DISTUTILS_USE_SDK=1` and `MSSdk=1`. For example, on GitHub Actions, you would add these steps:
+
+```yaml
+    - name: Prepare compiler environment for Windows
+      if: runner.os == 'Windows'
+      uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: x64
+
+    - name: Set Windows environment variables
+      if: runner.os == 'Windows'
+      shell: bash
+      run: |
+        echo "DISTUTILS_USE_SDK=1" >> $GITHUB_ENV
+        echo "MSSdk=1" >> $GITHUB_ENV
+
+    # invoke cibuildwheel...
+```
+
+cibuildwheel will not try to build 2.7 on Windows unless it detects that the above two variables are set. Note that changing to a more modern compiler will mean your wheel picks up a runtime dependency to a different [Visual C++ Redistributable][]. You also need to be [a bit careful][] in designing your extension; some major binding tools like pybind11 do this for you.
+
+More on setting a custom Windows toolchain in our docs on modern C++ standards [here](cpp_standards.md#windows-and-python-27).
+
+[Visual C++ Redistributable]: https://support.microsoft.com/en-us/topic/the-latest-supported-visual-c-downloads-2647da03-1eea-4433-9aff-95f26a218cc0
+[a bit careful]: https://pybind11.readthedocs.io/en/stable/faq.html#working-with-ancient-visual-studio-2008-builds-on-windows
+
 ### Building packages with optional C extensions

 `cibuildwheel` defines the environment variable `CIBUILDWHEEL` to the value `1` allowing projects for which the C extension is optional to make it mandatory when building wheels.
@@ -178,7 +208,7 @@ python3 -m twine upload wheelhouse/*.whl

 Visual Studio and MSVC link the compiled binary wheels to the Microsoft Visual C++ Runtime. Normally, these are included with Python, but when compiling with a newer version of Visual Studio, it is possible users will run into problems on systems that do not have these runtime libraries installed. The solution is to ask users to download the corresponding Visual C++ Redistributable from the [Microsoft website](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads) and install it. Since a Python installation normally includes these VC++ Redistributable files for [the version of the MSVC compiler used to compile Python](https://wiki.python.org/moin/WindowsCompilers), this is typically only a problem when compiling a Python 2.7 C extension with a newer compiler, e.g. to support a modern C++ standard (see [the section on modern C++ standards for Python 2.7](cpp_standards.md#windows-and-python-27) for more details).

-Additionally, Visual Studio 2019 started linking to an even newer DLL, `VCRUNTIME140_1.dll`, besides the `VCRUNTIME140.dll` that is included with recent Python versions (starting from Python 3.5; see [here](https://wiki.python.org/moin/WindowsCompilers) for more details on the corresponding Visual Studio & MSVC versions used to compile the different Python versions). To avoid this extra dependency on `VCRUNTIME140_1.dll`, the [`/d2FH4-` flag](https://devblogs.microsoft.com/cppblog/making-cpp-exception-handling-smaller-x64/) can be added to the MSVC invocations (check out [this issue](https://github.com/joerick/cibuildwheel/issues/423) for details and references).
+Additionally, Visual Studio 2019 started linking to an even newer DLL, `VCRUNTIME140_1.dll`, besides the `VCRUNTIME140.dll` that is included with recent Python versions (starting from Python 3.5; see [here](https://wiki.python.org/moin/WindowsCompilers) for more details on the corresponding Visual Studio & MSVC versions used to compile the different Python versions). To avoid this extra dependency on `VCRUNTIME140_1.dll`, the [`/d2FH4-` flag](https://devblogs.microsoft.com/cppblog/making-cpp-exception-handling-smaller-x64/) can be added to the MSVC invocations (check out [this issue](https://github.com/pypa/cibuildwheel/issues/423) for details and references).

 To add the `/d2FH4-` flag to a standard `setup.py` using `setuptools`, the `extra_compile_args` option can be used:

@@ -205,7 +235,7 @@ There are two suggested methods for keeping cibuildwheel up to date that instead
 If you use GitHub Actions for builds, you can use cibuildwheel as an action:

 ```yaml
-uses: joerick/cibuildwheel@v1.10.0
+uses: pypa/cibuildwheel@v1.12.0
 ```

 This is a composite step that just runs cibuildwheel using pipx. You can set command-line options as `with:` parameters, and use `env:` as normal.
@@ -231,7 +261,7 @@ The second option, and the only one that supports other CI systems, is using a `

 ```bash
 # requirements-cibw.txt
-cibuildwheel==1.10.0
+cibuildwheel==1.12.0
 ```

 Then your install step would have `python -m pip install -r requirements-cibw.txt` in it. Your `dependabot.yml` file could look like this:
@@ -4,7 +4,7 @@

 ## Setting options

-cibuildwheel is configured using environment variables, that can be set using
+cibuildwheel is configured using environment variables that can be set using
 your CI config.

 For example, to configure cibuildwheel to run tests, add the following YAML to
@@ -90,20 +90,31 @@ Default: `auto`

 `auto` will auto-detect platform using environment variables, such as `TRAVIS_OS_NAME`/`APPVEYOR`/`CIRCLECI`.

-For `linux` you need Docker running, on macOS or Linux. For `macos`, you need a Mac machine, and note that this script is going to automatically install MacPython on your system, so don't run on your development machine. For `windows`, you need to run in Windows, and `cibuildwheel` will install required versions of Python to `C:\cibw\python` using NuGet.
+- For `linux`, you need Docker running, on macOS or Linux.
+- For `macos`, you need a Mac machine. Note that cibuildwheel is going to install MacPython on your system, so you probably don't want to run this on your development machine.
+- For `windows`, you need to run in Windows. cibuildwheel will install required versions of Python to `C:\cibw\python` using NuGet.

 This option can also be set using the [command-line option](#command-line) `--platform`.

+!!! tip
+    If you have Docker installed, you can locally debug your cibuildwheel Linux config, instead of pushing to CI to test every change. For example:
+
+    ```bash
+    export CIBW_BUILD='cp37-*'
+    export CIBW_TEST_COMMAND='pytest {package}/tests'
+    cibuildwheel --platform linux .
+    ```
+

 ### `CIBW_BUILD`, `CIBW_SKIP` {: #build-skip}

 > Choose the Python versions to build

-Space-separated list of builds to build and skip. Each build has an identifier like `cp27-manylinux_x86_64` or `cp35-macosx_x86_64` - you can list specific ones to build and `cibuildwheel` will only build those, and/or list ones to skip and `cibuildwheel` won't try to build them.
+Space-separated list of builds to build and skip. Each build has an identifier like `cp27-manylinux_x86_64` or `cp35-macosx_x86_64` - you can list specific ones to build and cibuildwheel will only build those, and/or list ones to skip and cibuildwheel won't try to build them.

 When both options are specified, both conditions are applied and only builds with a tag that matches `CIBW_BUILD` and does not match `CIBW_SKIP` will be built.

-When setting the options, you can use shell-style globbing syntax, as per [`fnmatch`](https://docs.python.org/3/library/fnmatch.html) with the addition of curly bracket syntax `{option1,option2}`, provided by [`bracex`](https://pypi.org/project/bracex/). All the build identifiers supported by cibuildwheel are shown below:
+When setting the options, you can use shell-style globbing syntax, as per [fnmatch](https://docs.python.org/3/library/fnmatch.html) with the addition of curly bracket syntax `{option1,option2}`, provided by [bracex](https://pypi.org/project/bracex/). All the build identifiers supported by cibuildwheel are shown below:

 <div class="build-id-table-marker"></div>

@@ -113,14 +124,14 @@ When setting the options, you can use shell-style globbing syntax, as per [`fnma
 | Python 3.5   | cp35-macosx_x86_64                                                  | cp35-win_amd64<br/>cp35-win32 | cp35-manylinux_x86_64<br/>cp35-manylinux_i686 | cp35-manylinux_aarch64<br/>cp35-manylinux_ppc64le<br/>cp35-manylinux_s390x |
 | Python 3.6   | cp36-macosx_x86_64                                                  | cp36-win_amd64<br/>cp36-win32 | cp36-manylinux_x86_64<br/>cp36-manylinux_i686 | cp36-manylinux_aarch64<br/>cp36-manylinux_ppc64le<br/>cp36-manylinux_s390x |
 | Python 3.7   | cp37-macosx_x86_64                                                  | cp37-win_amd64<br/>cp37-win32 | cp37-manylinux_x86_64<br/>cp37-manylinux_i686 | cp37-manylinux_aarch64<br/>cp37-manylinux_ppc64le<br/>cp37-manylinux_s390x |
-| Python 3.8   | cp38-macosx_x86_64                                                  | cp38-win_amd64<br/>cp38-win32 | cp38-manylinux_x86_64<br/>cp38-manylinux_i686 | cp38-manylinux_aarch64<br/>cp38-manylinux_ppc64le<br/>cp38-manylinux_s390x |
+| Python 3.8   | cp38-macosx_x86_64<br/>cp38-macosx_universal2<br/>cp38-macosx_arm64 | cp38-win_amd64<br/>cp38-win32 | cp38-manylinux_x86_64<br/>cp38-manylinux_i686 | cp38-manylinux_aarch64<br/>cp38-manylinux_ppc64le<br/>cp38-manylinux_s390x |
 | Python 3.9   | cp39-macosx_x86_64<br/>cp39-macosx_universal2<br/>cp39-macosx_arm64 | cp39-win_amd64<br/>cp39-win32 | cp39-manylinux_x86_64<br/>cp39-manylinux_i686 | cp39-manylinux_aarch64<br/>cp39-manylinux_ppc64le<br/>cp39-manylinux_s390x |
 | PyPy2.7 v7.3 | pp27-macosx_x86_64                                                  |                    pp27-win32 | pp27-manylinux_x86_64                         |                                                                            |
 | PyPy3.6 v7.3 | pp36-macosx_x86_64                                                  |                    pp36-win32 | pp36-manylinux_x86_64                         |                                                                            |
 | PyPy3.7 v7.3 | pp37-macosx_x86_64                                                  |                    pp37-win32 | pp37-manylinux_x86_64                         |                                                                            |


-The list of supported and currently selected build identifiers can also be retrieved by passing the `--print-build-identifiers` flag to `cibuildwheel`.
+The list of supported and currently selected build identifiers can also be retrieved by passing the `--print-build-identifiers` flag to cibuildwheel.
 The format is `python_tag-platform_tag`, with tags similar to those in [PEP 425](https://www.python.org/dev/peps/pep-0425/#details).

 For CPython, the minimally supported macOS version is 10.9; for PyPy 2.7 and PyPy 3.6/3.7, respectively macOS 10.7 and 10.13 or higher is required.
@@ -276,8 +287,8 @@ the package is compatible with all versions of Python that it can build.

    Currently, setuptools has not yet added support for reading this value from
    pyproject.toml yet, and so does not copy it to Requires-Python in the wheel
-    metadata. This mechanism is used by `pip` to scan through older versions of
-    your package until it finds a release compatible with the curernt version
+    metadata. This mechanism is used by pip to scan through older versions of
+    your package until it finds a release compatible with the current version
    of Python compatible when installing, so it is an important value to set if
    you plan to drop support for a version of Python in the future.

@@ -329,7 +340,7 @@ CIBW_ENVIRONMENT: "BUILD_TIME=$(date) SAMPLE_TEXT=\"sample text\""
 ```

 !!! note
-    `cibuildwheel` always defines the environment variable `CIBUILDWHEEL=1`. This can be useful for [building wheels with optional extensions](faq.md#building-packages-with-optional-c-extensions).
+    cibuildwheel always defines the environment variable `CIBUILDWHEEL=1`. This can be useful for [building wheels with optional extensions](faq.md#building-packages-with-optional-c-extensions).

 ### `CIBW_BEFORE_ALL` {: #before-all}
 > Execute a shell command on the build system before any wheels are built.
@@ -338,7 +349,7 @@ Shell command to prepare a common part of the project (e.g. build or install lib

 This option is very useful for the Linux build, where builds take place in isolated Docker containers managed by cibuildwheel. This command will run inside the container before the wheel builds start. Note, if you're building both x86_64 and i686 wheels (the default), your build uses two different Docker images. In that case, this command will execute twice - once per build container.

-The placeholder `{package}` can be used here; it will be replaced by the path to the package being built by `cibuildwheel`.
+The placeholder `{package}` can be used here; it will be replaced by the path to the package being built by cibuildwheel.

 On Windows and macOS, the version of Python available inside `CIBW_BEFORE_ALL` is whatever is available on the host machine. On Linux, a modern Python version is available on PATH.

@@ -354,6 +365,11 @@ CIBW_BEFORE_ALL: make -C third_party_lib
 CIBW_BEFORE_ALL_LINUX: yum install -y libffi-dev
 ```

+Note that manylinux2_24 builds occur inside a Debian9 docker, where
+manylinux2010 and manylinux2014 builds occur inside a CentOS one. So for
+`manylinux2_24` the `CIBW_BEFORE_ALL_LINUX` command must use `apt-get -y`
+instead.
+
 ### `CIBW_BEFORE_BUILD` {: #before-build}
 > Execute a shell command preparing each wheel's build

@@ -361,7 +377,7 @@ A shell command to run before building the wheel. This option allows you to run

 If dependencies are required to build your wheel (for example if you include a header from a Python module), instead of using this command, we recommend adding requirements to a pyproject.toml file. This is reproducible, and users who do not get your wheels (such as Alpine or ClearLinux users) will still benefit.

-The active Python binary can be accessed using `python`, and pip with `pip`; `cibuildwheel` makes sure the right version of Python and pip will be executed. The placeholder `{package}` can be used here; it will be replaced by the path to the package being built by `cibuildwheel`.
+The active Python binary can be accessed using `python`, and pip with `pip`; cibuildwheel makes sure the right version of Python and pip will be executed. The placeholder `{package}` can be used here; it will be replaced by the path to the package being built by cibuildwheel.

 The command is run in a shell, so you can write things like `cmd1 && cmd2`.

@@ -421,7 +437,7 @@ Default:
 A shell command to repair a built wheel by copying external library dependencies into the wheel tree and relinking them.
 The command is run on each built wheel (except for pure Python ones) before testing it.

-The following placeholders must be used inside the command and will be replaced by `cibuildwheel`:
+The following placeholders must be used inside the command and will be replaced by cibuildwheel:

 - `{wheel}` for the absolute path to the built wheel
 - `{dest_dir}` for the absolute path of the directory where to create the repaired wheel
@@ -432,31 +448,54 @@ The command is run in a shell, so you can run multiple commands like `cmd1 && cm
 Platform-specific variants also available:<br/>
 `CIBW_REPAIR_WHEEL_COMMAND_MACOS` | `CIBW_REPAIR_WHEEL_COMMAND_WINDOWS` | `CIBW_REPAIR_WHEEL_COMMAND_LINUX`

+!!! tip
+    cibuildwheel doesn't yet ship a default repair command for Windows.
+
+    **If that's an issue for you, check out [delvewheel]** - a new package that aims to do the same as auditwheel or delocate for Windows.
+
+    Because delvewheel is still relatively early-stage, cibuildwheel does not yet run it by default. However, we'd recommend giving it a try! See the examples below for usage.
+
+    [Delvewheel]: https://github.com/adang1345/delvewheel
+
 #### Examples

 ```yaml
+# use delvewheel on windows (only works on Python 3.6+)
+CIBW_BEFORE_BUILD_WINDOWS: "pip install delvewheel"
+CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: "delvewheel repair -w {dest_dir} {wheel}"
+
 # don't repair macOS wheels
 CIBW_REPAIR_WHEEL_COMMAND_MACOS: ""

 # pass the `--lib-sdir .` flag to auditwheel on Linux
 CIBW_REPAIR_WHEEL_COMMAND_LINUX: "auditwheel repair --lib-sdir . -w {dest_dir} {wheel}"
+
 ```


-### `CIBW_MANYLINUX_X86_64_IMAGE`, `CIBW_MANYLINUX_I686_IMAGE`, `CIBW_MANYLINUX_PYPY_X86_64_IMAGE`, `CIBW_MANYLINUX_AARCH64_IMAGE`, `CIBW_MANYLINUX_PPC64LE_IMAGE`, `CIBW_MANYLINUX_S390X_IMAGE` {: #manylinux-image}
-> Specify alternative manylinux docker images
+### CIBW_MANYLINUX_*_IMAGE {: #manylinux-image}
+> Specify alternative manylinux Docker images

-An alternative Docker image to be used for building [`manylinux`](https://github.com/pypa/manylinux) wheels. `cibuildwheel` will then pull these instead of the default images, [`quay.io/pypa/manylinux2010_x86_64`](https://quay.io/pypa/manylinux2010_x86_64), [`quay.io/pypa/manylinux2010_i686`](https://quay.io/pypa/manylinux2010_i686), [`pypywheels/manylinux2010-pypy_x86_64`](https://hub.docker.com/r/pypywheels/manylinux2010-pypy_x86_64), [`quay.io/pypa/manylinux2014_aarch64`](https://quay.io/pypa/manylinux2014_aarch64), [`quay.io/pypa/manylinux2014_ppc64le`](https://quay.io/pypa/manylinux2014_ppc64le), and [`quay.io/pypa/manylinux2014_s390x`](https://quay.io/pypa/manylinux2010_s390x).
+The available options are:

-The value of this option can either be set to `manylinux1`, `manylinux2010`, `manylinux2014` or `manylinux_2_24` to use a pinned version of the [official `manylinux` images](https://github.com/pypa/manylinux) and [PyPy `manylinux` images](https://github.com/pypy/manylinux). Alternatively, set these options to any other valid Docker image name. Note that for PyPy, only the official `manylinux2010` image is currently available. For architectures other
-than x86 (x86\_64 and i686) `manylinux2014` or `manylinux_2_24` must be used because the first version of the manylinux specification that supports additional architectures is `manylinux2014`.
+- `CIBW_MANYLINUX_X86_64_IMAGE`
+- `CIBW_MANYLINUX_I686_IMAGE`
+- `CIBW_MANYLINUX_PYPY_X86_64_IMAGE`
+- `CIBW_MANYLINUX_AARCH64_IMAGE`
+- `CIBW_MANYLINUX_PPC64LE_IMAGE`
+- `CIBW_MANYLINUX_S390X_IMAGE`

-Beware to specify a valid Docker image that can be used in the same way as the official, default Docker images: all necessary Python and pip versions need to be present in `/opt/python/`, and the `auditwheel` tool needs to be present for `cibuildwheel` to work. Apart from that, the architecture and relevant shared system libraries need to be manylinux1-, manylinux2010- or manylinux2014-compatible in order to produce valid `manylinux1`/`manylinux2010`/`manylinux2014`/`manylinux_2_24` wheels (see [pypa/manylinux on GitHub](https://github.com/pypa/manylinux), [PEP 513](https://www.python.org/dev/peps/pep-0513/), [PEP 571](https://www.python.org/dev/peps/pep-0571/), [PEP 599](https://www.python.org/dev/peps/pep-0599/) and  [PEP 600](https://www.python.org/dev/peps/pep-0600/)  for more details).
+Set an alternative Docker image to be used for building [manylinux](https://github.com/pypa/manylinux) wheels. cibuildwheel will then pull these instead of the default images, [`quay.io/pypa/manylinux2010_x86_64`](https://quay.io/pypa/manylinux2010_x86_64), [`quay.io/pypa/manylinux2010_i686`](https://quay.io/pypa/manylinux2010_i686), [`pypywheels/manylinux2010-pypy_x86_64`](https://hub.docker.com/r/pypywheels/manylinux2010-pypy_x86_64), [`quay.io/pypa/manylinux2014_aarch64`](https://quay.io/pypa/manylinux2014_aarch64), [`quay.io/pypa/manylinux2014_ppc64le`](https://quay.io/pypa/manylinux2014_ppc64le), and [`quay.io/pypa/manylinux2014_s390x`](https://quay.io/pypa/manylinux2010_s390x).

-Note that `auditwheel` detects the version of the `manylinux` standard in the Docker image through the `AUDITWHEEL_PLAT` environment variable, as `cibuildwheel` has no way of detecting the correct `--plat` command line argument to pass to `auditwheel` for a custom image. If a Docker image does not correctly set this `AUDITWHEEL_PLAT` environment variable, the `CIBW_ENVIRONMENT` option can be used to do so (e.g., `CIBW_ENVIRONMENT='AUDITWHEEL_PLAT="manylinux2010_$(uname -m)"'`).
+The value of this option can either be set to `manylinux1`, `manylinux2010`, `manylinux2014` or `manylinux_2_24` to use a pinned version of the [official manylinux images](https://github.com/pypa/manylinux) and [PyPy manylinux images](https://github.com/pypy/manylinux). Alternatively, set these options to any other valid Docker image name. For PyPy, only the official `manylinux2010` image is currently available. For architectures other
+than x86 (x86\_64 and i686) `manylinux2014` or `manylinux_2_24` must be used, because the first version of the manylinux specification that supports additional architectures is `manylinux2014`.

 Note that `manylinux2014`/`manylinux_2_24` don't support builds with Python 2.7 - when building with `manylinux2014`/`manylinux_2_24`, skip Python 2.7 using `CIBW_SKIP` (see example below).

+If setting a custom Docker image, you'll need to make sure it can be used in the same way as the official, default Docker images: all necessary Python and pip versions need to be present in `/opt/python/`, and the auditwheel tool needs to be present for cibuildwheel to work. Apart from that, the architecture and relevant shared system libraries need to be compatible to the relevant standard to produce valid manylinux1/manylinux2010/manylinux2014/manylinux_2_24 wheels (see [pypa/manylinux on GitHub](https://github.com/pypa/manylinux), [PEP 513](https://www.python.org/dev/peps/pep-0513/), [PEP 571](https://www.python.org/dev/peps/pep-0571/), [PEP 599](https://www.python.org/dev/peps/pep-0599/) and [PEP 600](https://www.python.org/dev/peps/pep-0600/) for more details).
+
+Auditwheel detects the version of the manylinux standard in the Docker image through the `AUDITWHEEL_PLAT` environment variable, as cibuildwheel has no way of detecting the correct `--plat` command line argument to pass to auditwheel for a custom image. If a Docker image does not correctly set this `AUDITWHEEL_PLAT` environment variable, the `CIBW_ENVIRONMENT` option can be used to do so (e.g., `CIBW_ENVIRONMENT='AUDITWHEEL_PLAT="manylinux2010_$(uname -m)"'`).
+
 #### Examples

 ```yaml
@@ -539,8 +578,8 @@ CIBW_DEPENDENCY_VERSIONS: ./constraints.txt

 Shell command to run tests after the build. The wheel will be installed
 automatically and available for import from the tests. To ensure the wheel is
-imported by your tests (instead of your source copy), tests are run from a
-different directory. Use the placeholders `{project}` and `{package}` when
+imported by your tests (instead of your source copy), **tests are not run from
+your project directory**. Use the placeholders `{project}` and `{package}` when
 specifying paths in your project. If this variable is not set, your wheel will
 not be installed after building.

@@ -571,10 +610,10 @@ CIBW_TEST_COMMAND: "echo Wheel installed"
 ### `CIBW_BEFORE_TEST` {: #before-test}
 > Execute a shell command before testing each wheel

-A shell command to run in **each** test virtual environment, before your wheel is installed and tested. This is useful if you need to install a non pip package, change values of environment variables
-or perform multi step pip installation (e.g. installing `scikit-build` or `cython` before install test package)
+A shell command to run in **each** test virtual environment, before your wheel is installed and tested. This is useful if you need to install a non-pip package, invoke pip with different environment variables,
+or perform a multi-step pip installation (e.g. installing scikit-build or Cython before installing test package).

-The active Python binary can be accessed using `python`, and pip with `pip`; `cibuildwheel` makes sure the right version of Python and pip will be executed. The placeholder `{package}` can be used here; it will be replaced by the path to the package being built by `cibuildwheel`.
+The active Python binary can be accessed using `python`, and pip with `pip`; cibuildwheel makes sure the right version of Python and pip will be executed. The placeholder `{package}` can be used here; it will be replaced by the path to the package being built by cibuildwheel.

 The command is run in a shell, so you can write things like `cmd1 && cmd2`.

@@ -639,7 +678,7 @@ CIBW_TEST_EXTRAS: test,qt
 ### `CIBW_TEST_SKIP` {: #test-skip}
 > Skip running tests on some builds

-This will skip testing on any identifiers that match the given skip patterns (see [`CIBW_SKIP`](#build-skip)). This can be used to mask out tests for wheels that have missing dependencies upstream that are slow or hard to build, or to mask up slow tests on emulated architectures.
+This will skip testing on any identifiers that match the given skip patterns (see [`CIBW_SKIP`](#build-skip)). This can be used to mask out tests for wheels that have missing dependencies upstream that are slow or hard to build, or to skip slow tests on emulated architectures.

 With macOS `universal2` wheels, you can also skip the the individual archs inside the wheel using an `:arch` suffix. For example, `cp39-macosx_universal2:x86_64` or `cp39-macosx_universal2:arm64`.

@@ -750,7 +789,7 @@ optional arguments:

    $('.rst-content h3')
      .filter(function (i, el) {
-        return !!$(el).text().match(/(^([A-Z0-9, _]| and )+)¶$/);
+        return !!$(el).text().match(/(^([A-Z0-9, _*]| and )+)¶$/);
      })
      .each(function (i, el) {
        var optionName = $(el).text().replace('¶', '');
@@ -45,12 +45,8 @@ To build Linux, Mac, and Windows wheels using GitHub Actions, create a `.github/
        steps:
          - uses: actions/checkout@v2

-          - name: Install Visual C++ for Python 2.7
-            if: runner.os == 'Windows'
-            run: choco install vcpython27 -f -y
-
          - name: Build wheels
-            run: pipx run cibuildwheel==1.10.0
+            run: pipx run cibuildwheel==1.12.0

          - uses: actions/upload-artifact@v2
            with:
@@ -85,11 +81,7 @@ To build Linux, Mac, and Windows wheels using GitHub Actions, create a `.github/
          - uses: actions/setup-python@v2

          - name: Install cibuildwheel
-            run: python -m pip install cibuildwheel==1.10.0
-
-          - name: Install Visual C++ for Python 2.7
-            if: runner.os == 'Windows'
-            run: choco install vcpython27 -f -y
+            run: python -m pip install cibuildwheel==1.12.0

          - name: Build wheels
            run: python -m cibuildwheel --output-dir wheelhouse
@@ -104,7 +96,7 @@ Commit this file, and push to GitHub - either to your default branch, or to a PR

 For more info on this file, check out the [docs](https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions).

-[`examples/github-deploy.yml`](https://github.com/joerick/cibuildwheel/blob/master/examples/github-deploy.yml) extends this minimal example with a demonstration of how to automatically upload the built wheels to PyPI.
+[`examples/github-deploy.yml`](https://github.com/pypa/cibuildwheel/blob/master/examples/github-deploy.yml) extends this minimal example with a demonstration of how to automatically upload the built wheels to PyPI.


 # Azure Pipelines [linux/mac/windows] {: #azure-pipelines}
@@ -140,7 +132,7 @@ Commit this file, enable building of your repo on Travis CI, and push.

 Then setup a deployment method by following the [Travis CI deployment docs](https://docs.travis-ci.com/user/deployment/), or see [Delivering to PyPI](deliver-to-pypi.md). For more info on `.travis.yml`, check out the [docs](https://docs.travis-ci.com/).

-[`examples/travis-ci-deploy.yml`](https://github.com/joerick/cibuildwheel/blob/master/examples/travis-ci-deploy.yml) extends this minimal example with a demonstration of how to automatically upload the built wheels to PyPI.
+[`examples/travis-ci-deploy.yml`](https://github.com/pypa/cibuildwheel/blob/master/examples/travis-ci-deploy.yml) extends this minimal example with a demonstration of how to automatically upload the built wheels to PyPI.

 # AppVeyor [linux/mac/windows] {: #appveyor}

@@ -12,7 +12,7 @@ stack: python 3.7
 init:
 - cmd: set PATH=C:\Python37;C:\Python37\Scripts;%PATH%

-install: python -m pip install cibuildwheel==1.10.0
+install: python -m pip install cibuildwheel==1.12.0

 build_script: python -m cibuildwheel --output-dir wheelhouse

@@ -6,7 +6,7 @@ jobs:
    - bash: |
        set -o errexit
        python3 -m pip install --upgrade pip
-        pip3 install cibuildwheel==1.10.0
+        pip3 install cibuildwheel==1.12.0
      displayName: Install dependencies
    - bash: cibuildwheel --output-dir wheelhouse .
      displayName: Build wheels
@@ -20,7 +20,7 @@ jobs:
    - bash: |
        set -o errexit
        python3 -m pip install --upgrade pip
-        python3 -m pip install cibuildwheel==1.10.0
+        python3 -m pip install cibuildwheel==1.12.0
      displayName: Install dependencies
    - bash: cibuildwheel --output-dir wheelhouse .
      displayName: Build wheels
@@ -31,12 +31,10 @@ jobs:
  pool: {vmImage: 'vs2017-win2016'}
  steps:
    - task: UsePythonVersion@0
-    - script: choco install vcpython27 -f -y
-      displayName: Install Visual C++ for Python 2.7
    - bash: |
        set -o errexit
        python -m pip install --upgrade pip
-        pip install cibuildwheel==1.10.0
+        pip install cibuildwheel==1.12.0
      displayName: Install dependencies
    - bash: cibuildwheel --output-dir wheelhouse .
      displayName: Build wheels
@@ -11,7 +11,7 @@ jobs:
      - run:
          name: Build the Linux wheels.
          command: |
-            pip3 install --user cibuildwheel==1.10.0
+            pip3 install --user cibuildwheel==1.12.0
            cibuildwheel --output-dir wheelhouse
      - store_artifacts:
          path: wheelhouse/
@@ -25,7 +25,7 @@ jobs:
      - run:
          name: Build the OS X wheels.
          command: |
-            pip3 install cibuildwheel==1.10.0
+            pip3 install cibuildwheel==1.12.0
            cibuildwheel --output-dir wheelhouse
      - store_artifacts:
          path: wheelhouse/
@@ -10,7 +10,7 @@ jobs:
      - uses: actions/checkout@v2

      - name: Build wheels
-        uses: joerick/cibuildwheel@v1.10.0
+        uses: pypa/cibuildwheel@v1.12.0
        env:
          CIBW_ARCHS_MACOS: x86_64 universal2

@@ -26,12 +26,8 @@ jobs:
        with:
          python-version: '3.8'

-      - name: Install Visual C++ for Python 2.7
-        if: runner.os == 'Windows'
-        run: choco install vcpython27 -f -y
-
      - name: Build wheels
-        uses: joerick/cibuildwheel@v1.10.0
+        uses: pypa/cibuildwheel@v1.12.0

      - uses: actions/upload-artifact@v2
        with:
@@ -13,12 +13,8 @@ jobs:
    steps:
      - uses: actions/checkout@v2

-      - name: Install Visual C++ for Python 2.7
-        if: runner.os == 'Windows'
-        run: choco install vcpython27 -f -y
-
      - name: Build wheels
-        uses: joerick/cibuildwheel@v1.10.0
+        uses: pypa/cibuildwheel@v1.12.0
        # to supply options, put them in 'env', like:
        # env:
        #   CIBW_SOME_OPTION: value
@@ -18,10 +18,6 @@ jobs:
        with:
          python-version: '3.7'

-      - name: Install Visual C++ for Python 2.7
-        if: runner.os == 'Windows'
-        run: choco install vcpython27 -f -y
-
      - name: Set up QEMU
        if: runner.os == 'Linux'
        uses: docker/setup-qemu-action@v1
@@ -29,7 +25,7 @@ jobs:
          platforms: all

      - name: Build wheels
-        uses: joerick/cibuildwheel@v1.10.0
+        uses: pypa/cibuildwheel@v1.12.0
        env:
          # configure cibuildwheel to build native archs ('auto'), and some
          # emulated ones
@@ -12,7 +12,7 @@ linux:
    DOCKER_TLS_CERTDIR: ""
  script:
    - curl -sSL https://get.docker.com/ | sh
-    - python -m pip install cibuildwheel==1.10.0
+    - python -m pip install cibuildwheel==1.12.0
    - cibuildwheel --output-dir wheelhouse
  artifacts:
    paths:
@@ -1,6 +1,8 @@
 # As written, this configuration will build your wheels on every
 # commit, but will only push to PyPI on tagged commits.

+os: linux
+dist: focal
 language: python

 jobs:
@@ -14,13 +16,13 @@ jobs:
    - os: windows
      language: shell
      before_install:
-        - choco install python --version 3.8.6
+        - choco upgrade python -y --version 3.8.6
        - export PATH="/c/Python38:/c/Python38/Scripts:$PATH"
        # make sure it's on PATH as 'python3'
        - ln -s /c/Python38/python.exe /c/Python38/python3.exe

 install:
-  - python3 -m pip install cibuildwheel==1.10.0
+  - python3 -m pip install cibuildwheel==1.12.0

 script:
  # build the wheels, put them into './wheelhouse'
@@ -1,3 +1,5 @@
+os: linux
+dist: focal
 language: python

 jobs:
@@ -20,13 +22,13 @@ jobs:
    - os: windows
      language: shell
      before_install:
-        - choco install python --version 3.8.6
+        - choco upgrade python -y --version 3.8.6
        - export PATH="/c/Python38:/c/Python38/Scripts:$PATH"
        # make sure it's on PATH as 'python3'
        - ln -s /c/Python38/python.exe /c/Python38/python3.exe

 install:
-  - python3 -m pip install cibuildwheel==1.10.0
+  - python3 -m pip install cibuildwheel==1.12.0

 script:
  # build the wheels, put them into './wheelhouse'
@@ -5,6 +5,8 @@
 # repo is yours (e.g. it won't run on a Pull Request). For convenience, a source
 # distribution is also created.

+os: linux
+dist: focal
 language: python
 python:
  - 3.6
@@ -14,7 +16,7 @@ python:
 before_install:
  - |
    if [[ "$TRAVIS_OS_NAME" = windows ]]; then
-        choco install python --version 3.8.6
+        choco upgrade python -y --version 3.8.6
        export PATH="/c/Python38:/c/Python38/Scripts:$PATH"
        # make sure it's on PATH as 'python3'
        ln -s /c/Python38/python.exe /c/Python38/python3.exe
@@ -32,9 +34,9 @@ stages:
  # Only execute deployment stage on tagged commits, and from your repository
  # (e.g. not PRs). Replace with your repo name.
  - name: deploy
-    if: tag IS PRESENT AND repo = joerick/cibuildwheel
+    if: tag IS PRESENT AND repo = pypa/cibuildwheel
    # To only build tags that look like vX.Y.Z:
-    #   if: tag =~ ^v\d+\.\d+\.\d+$ AND repo = joerick/cibuildwheel
+    #   if: tag =~ ^v\d+\.\d+\.\d+$ AND repo = pypa/cibuildwheel

 jobs:
  include:
@@ -55,7 +57,7 @@ jobs:
    - stage: deploy
      name: Build and deploy Linux wheels
      services: docker
-      install: python3 -m pip install cibuildwheel==1.10.0
+      install: python3 -m pip install cibuildwheel==1.12.0
      script: python3 -m cibuildwheel --output-dir wheelhouse
      after_success: |
        python3 -m pip install twine
@@ -65,7 +67,7 @@ jobs:
      name: Build and deploy macOS wheels
      os: osx
      language: shell
-      install: python3 -m pip install cibuildwheel==1.10.0
+      install: python3 -m pip install cibuildwheel==1.12.0
      script: python3 -m cibuildwheel --output-dir wheelhouse
      after_success: |
        python3 -m pip install twine
@@ -75,7 +77,7 @@ jobs:
      name: Build and deploy Windows wheels
      os: windows
      language: shell
-      install: python3 -m pip install cibuildwheel==1.10.0
+      install: python3 -m pip install cibuildwheel==1.12.0
      script: python3 -m cibuildwheel --output-dir wheelhouse
      after_success: |
        python3 -m pip install twine
@@ -5,7 +5,8 @@ theme:
  highlightjs: true
  hljs_languages:
      - yaml
-repo_url: https://github.com/joerick/cibuildwheel
+repo_url: https://github.com/pypa/cibuildwheel
+edit_uri: edit/main/docs/

 extra_css:
  - extra.css
@@ -39,3 +40,4 @@ markdown_extensions:

 plugins:
  - include-markdown
+  - search
@@ -7,5 +7,5 @@ requires = [
 build-backend = "setuptools.build_meta"

 [tool.black]
-line-length = 120
-target-version = ['py36']
+line-length = 100
+target-version = ['py36', 'py37', 'py38', 'py39']
@@ -1,39 +1,48 @@
 [metadata]
-
 name = cibuildwheel
-version = 1.10.0
+version = 1.12.0
 description = Build Python wheels on CI with minimal configuration.
 long_description = file: README.md
 long_description_content_type = text/markdown
+url = https://github.com/pypa/cibuildwheel
 author = Joe Rickerby
 author_email = joerick@mac.com
-url = https://github.com/joerick/cibuildwheel
 license = BSD
+license_file = LICENSE
 classifiers =
+    Development Status :: 5 - Production/Stable
    Intended Audience :: Developers
+    License :: OSI Approved :: BSD License
    Natural Language :: English
    Programming Language :: Python :: 3
-    Development Status :: 5 - Production/Stable
-    License :: OSI Approved :: BSD License
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
    Programming Language :: Python :: Implementation :: CPython
    Topic :: Software Development :: Build Tools
-project_urls =
-    Changelog=https://github.com/joerick/cibuildwheel#changelog
-    Documentation=https://cibuildwheel.readthedocs.io/
 keywords = ci,wheel,packaging,pypi,travis,appveyor,macos,linux,windows
+project_urls =
+    Changelog=https://github.com/pypa/cibuildwheel#changelog
+    Documentation=https://cibuildwheel.readthedocs.io/

 [options]
 packages = find:
-zip_safe = False
-include_package_data = True
-python_requires = >=3.6
 install_requires =
    bashlex!=0.13
-    toml
-    certifi
    bracex
+    certifi
    packaging
-    typing_extensions; python_version < '3.8'
+    toml
+    typing_extensions;python_version < '3.8'
+python_requires = >=3.6
+include_package_data = True
+zip_safe = False
+
+[options.entry_points]
+console_scripts =
+    cibuildwheel = cibuildwheel.__main__:main

 [options.package_data]
 cibuildwheel = resources/*
@@ -42,28 +51,26 @@ cibuildwheel = resources/*
 include =
    cibuildwheel

-[options.entry_points]
-console_scripts =
-    cibuildwheel = cibuildwheel.__main__:main
-
-
 [flake8]
-ignore = E501,W503,E741,E226,B950
+ignore = E501,W503,E741,E226,B950,E203
 select = C,E,F,W,B,B9
 application-import-names = cibuildwheel
 exclude =
-  cibuildwheel/resources/,
-  dist/,
-  build/,
-  .git/,
-  env/,
-  env2/,
-  env??/,
-  .venv/,
-  site/
+    cibuildwheel/resources/,
+    dist/,
+    build/,
+    .git/,
+    env/,
+    env2/,
+    env??/,
+    .venv/,
+    site/

 [tool:pytest]
-junit_family=xunit2
+junit_family = xunit2
+testpaths =
+    test
+    unit_test

 [mypy]
 python_version = 3.7
@@ -110,5 +117,5 @@ ignore_missing_imports = True
 ignore_missing_imports = True

 [tool:isort]
-profile=black
-multi_line_output=3
+profile = black
+multi_line_output = 3
@@ -8,37 +8,39 @@ from cibuildwheel.logger import Logger
 from . import test_projects, utils

 basic_project = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent('''
+    setup_py_add=textwrap.dedent(
+        """
        import os

        if os.environ.get("CIBUILDWHEEL", "0") != "1":
            raise Exception("CIBUILDWHEEL environment variable is not set to 1")
-    ''')
+        """
+    )
 )


 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    basic_project.generate(project_dir)

    # build the wheels
    actual_wheels = utils.cibuildwheel_run(project_dir)

    # check that the expected wheels are produced
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)


-@pytest.mark.skip(reason='to keep test output clean')
+@pytest.mark.skip(reason="to keep test output clean")
 def test_sample_build(tmp_path, capfd):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    basic_project.generate(project_dir)

    # build the wheels, and let the output passthrough to the caller, so
    # we can see how it looks
    with capfd.disabled():
        logger = Logger()
-        logger.step('test_sample_build')
+        logger.step("test_sample_build")
        try:
            utils.cibuildwheel_run(project_dir)
        finally:
@@ -46,7 +48,7 @@ def test_sample_build(tmp_path, capfd):


 def test_build_identifiers(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    basic_project.generate(project_dir)

    # check that the number of expected wheels matches the number of build
@@ -54,10 +56,13 @@ def test_build_identifiers(tmp_path):
    # after adding CIBW_MANYLINUX_IMAGE to support manylinux2010, there
    # can be multiple wheels for each wheel, though, so we need to limit
    # the expected wheels
-    if platform.machine() in ['x86_64', 'i686']:
-        expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                           if '-manylinux' not in w or '-manylinux1' in w]
+    if platform.machine() in ["x86_64", "i686"]:
+        expected_wheels = [
+            w
+            for w in utils.expected_wheels("spam", "0.1.0")
+            if "-manylinux" not in w or "-manylinux1" in w
+        ]
    else:
-        expected_wheels = utils.expected_wheels('spam', '0.1.0')
+        expected_wheels = utils.expected_wheels("spam", "0.1.0")
    build_identifiers = utils.cibuildwheel_get_build_identifiers(project_dir)
    assert len(expected_wheels) == len(build_identifiers)
@@ -6,7 +6,8 @@ import pytest
 from . import test_projects, utils

 project_with_before_build_asserts = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent(r'''
+    setup_py_add=textwrap.dedent(
+        r"""
        # assert that the Python version as written to text_info.txt in the CIBW_BEFORE_ALL step
        # is the same one as is currently running.
        with open("text_info.txt") as f:
@@ -14,52 +15,62 @@ project_with_before_build_asserts = test_projects.new_c_project(

        print("## stored text: " + stored_text)
        assert stored_text == "sample text 123"
-    ''')
+        """
+    )
 )


 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_before_build_asserts.generate(project_dir)

-    with (project_dir / 'text_info.txt').open(mode='w') as ff:
+    with (project_dir / "text_info.txt").open(mode="w") as ff:
        print("dummy text", file=ff)

    # build the wheels
    before_all_command = '''python -c "import os;open('{project}/text_info.txt', 'w').write('sample text '+os.environ.get('TEST_VAL', ''))"'''
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        # write python version information to a temporary file, this is
-        # checked in setup.py
-        'CIBW_BEFORE_ALL': before_all_command,
-        'CIBW_BEFORE_ALL_LINUX': before_all_command + ''' && python -c "import sys; assert sys.version_info >= (3, 6)"''',
-        'CIBW_ENVIRONMENT': "TEST_VAL='123'"
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            # write python version information to a temporary file, this is
+            # checked in setup.py
+            "CIBW_BEFORE_ALL": before_all_command,
+            "CIBW_BEFORE_ALL_LINUX": f'{before_all_command} && python -c "import sys; assert sys.version_info >= (3, 6)"',
+            "CIBW_ENVIRONMENT": "TEST_VAL='123'",
+        },
+    )

    # also check that we got the right wheels
-    (project_dir / 'text_info.txt').unlink()
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    (project_dir / "text_info.txt").unlink()
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)


 def test_failing_command(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    test_projects.new_c_project().generate(project_dir)

    with pytest.raises(subprocess.CalledProcessError):
-        utils.cibuildwheel_run(project_dir, add_env={
-            'CIBW_BEFORE_ALL': 'false',
-            'CIBW_BEFORE_ALL_WINDOWS': 'exit /b 1',
-        })
+        utils.cibuildwheel_run(
+            project_dir,
+            add_env={
+                "CIBW_BEFORE_ALL": "false",
+                "CIBW_BEFORE_ALL_WINDOWS": "exit /b 1",
+            },
+        )


 def test_cwd(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    test_projects.new_c_project().generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BEFORE_ALL': f'''python -c "import os; assert os.getcwd() == {str(project_dir)!r}"''',
-        'CIBW_BEFORE_ALL_LINUX': '''python -c "import os; assert os.getcwd() == '/project'"''',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BEFORE_ALL": f'''python -c "import os; assert os.getcwd() == {str(project_dir)!r}"''',
+            "CIBW_BEFORE_ALL_LINUX": '''python -c "import os; assert os.getcwd() == '/project'"''',
+        },
+    )

-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)
@@ -6,7 +6,8 @@ import pytest
 from . import test_projects, utils

 project_with_before_build_asserts = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent(r'''
+    setup_py_add=textwrap.dedent(
+        r"""
        import os

        # assert that the Python version as written to pythonversion.txt in the CIBW_BEFORE_BUILD step
@@ -26,49 +27,61 @@ project_with_before_build_asserts = test_projects.new_c_project(
        print('sys.executable', sys.executable)
        # windows/mac are case insensitive
        assert os.path.realpath(stored_executable).lower() == os.path.realpath(sys.executable).lower()
-    ''')
+        """
+    )
 )


 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_before_build_asserts.generate(project_dir)

-    before_build = ('''python -c "import sys; open('{output_dir}pythonversion.txt', 'w').write(sys.version)" && '''
-                    '''python -c "import sys; open('{output_dir}pythonexecutable.txt', 'w').write(sys.executable)"''')
+    before_build = (
+        """python -c "import sys; open('{output_dir}pythonversion.txt', 'w').write(sys.version)" && """
+        '''python -c "import sys; open('{output_dir}pythonexecutable.txt', 'w').write(sys.executable)"'''
+    )

    # build the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        # write python version information to a temporary file, this is
-        # checked in setup.py
-        'CIBW_BEFORE_BUILD': before_build.format(output_dir='/tmp/'),
-        'CIBW_BEFORE_BUILD_WINDOWS': before_build.format(output_dir=r'c:\\'),
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            # write python version information to a temporary file, this is
+            # checked in setup.py
+            "CIBW_BEFORE_BUILD": before_build.format(output_dir="/tmp/"),
+            "CIBW_BEFORE_BUILD_WINDOWS": before_build.format(output_dir=r"c:\\"),
+        },
+    )

    # also check that we got the right wheels
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)


 def test_failing_command(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    test_projects.new_c_project().generate(project_dir)

    with pytest.raises(subprocess.CalledProcessError):
-        utils.cibuildwheel_run(project_dir, add_env={
-            'CIBW_BEFORE_BUILD': 'false',
-            'CIBW_BEFORE_BUILD_WINDOWS': 'exit /b 1',
-        })
+        utils.cibuildwheel_run(
+            project_dir,
+            add_env={
+                "CIBW_BEFORE_BUILD": "false",
+                "CIBW_BEFORE_BUILD_WINDOWS": "exit /b 1",
+            },
+        )


 def test_cwd(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    test_projects.new_c_project().generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BEFORE_BUILD': f'''python -c "import os; assert os.getcwd() == {str(project_dir)!r}"''',
-        'CIBW_BEFORE_BUILD_LINUX': '''python -c "import os; assert os.getcwd() == '/project'"''',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BEFORE_BUILD": f'''python -c "import os; assert os.getcwd() == {str(project_dir)!r}"''',
+            "CIBW_BEFORE_BUILD_LINUX": '''python -c "import os; assert os.getcwd() == '/project'"''',
+        },
+    )

-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)
@@ -1,7 +1,9 @@
 from . import test_projects, utils

 before_test_project = test_projects.new_c_project()
-before_test_project.files['test/spam_test.py'] = r'''
+before_test_project.files[
+    "test/spam_test.py"
+] = r"""
 import sys
 import os
 from unittest import TestCase
@@ -30,28 +32,31 @@ class TestBeforeTest(TestCase):
        #  vssadm~1 instead of vssadministrator

        assert os.stat(stored_prefix) == os.stat(sys.prefix)
-'''
+"""


 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    before_test_project.generate(project_dir)
-    test_project_dir = project_dir / 'dependency'
+    test_project_dir = project_dir / "dependency"
    test_projects.new_c_project().generate(test_project_dir)

    # build the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        # write python version information to a temporary file, this is
-        # checked in setup.py
-        'CIBW_BEFORE_TEST': '''python -c "import sys; open('/tmp/pythonversion.txt', 'w').write(sys.version)" && python -c "import sys; open('/tmp/pythonprefix.txt', 'w').write(sys.prefix)" && python -m pip install {project}/dependency''',
-        'CIBW_BEFORE_TEST_WINDOWS': '''python -c "import sys; open('c:\\pythonversion.txt', 'w').write(sys.version)" && python -c "import sys; open('c:\\pythonprefix.txt', 'w').write(sys.prefix)" && python -m pip install {project}/dependency''',
-        'CIBW_TEST_REQUIRES': 'nose',
-        # the 'false ||' bit is to ensure this command runs in a shell on
-        # mac/linux.
-        'CIBW_TEST_COMMAND': 'false || nosetests {project}/test',
-        'CIBW_TEST_COMMAND_WINDOWS': 'nosetests {project}/test',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            # write python version information to a temporary file, this is
+            # checked in setup.py
+            "CIBW_BEFORE_TEST": """python -c "import sys; open('/tmp/pythonversion.txt', 'w').write(sys.version)" && python -c "import sys; open('/tmp/pythonprefix.txt', 'w').write(sys.prefix)" && python -m pip install {project}/dependency""",
+            "CIBW_BEFORE_TEST_WINDOWS": """python -c "import sys; open('c:\\pythonversion.txt', 'w').write(sys.version)" && python -c "import sys; open('c:\\pythonprefix.txt', 'w').write(sys.prefix)" && python -m pip install {project}/dependency""",
+            "CIBW_TEST_REQUIRES": "nose",
+            # the 'false ||' bit is to ensure this command runs in a shell on
+            # mac/linux.
+            "CIBW_TEST_COMMAND": "false || nosetests {project}/test",
+            "CIBW_TEST_COMMAND_WINDOWS": "nosetests {project}/test",
+        },
+    )

    # also check that we got the right wheels
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)
@@ -3,27 +3,33 @@ import textwrap
 from . import test_projects, utils

 project_with_skip_asserts = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent(r'''
+    setup_py_add=textwrap.dedent(
+        r"""
        # explode if run on Python 2.7 or Python 3.7 (these should be skipped)
        if sys.version_info[0:2] == (2, 7):
            raise Exception("Python 2.7 should not be built")
        if sys.version_info[0:2] == (3, 7):
            raise Exception("Python 3.7 should be skipped")
-    ''')
+        """
+    )
 )


 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_skip_asserts.generate(project_dir)

    # build the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BUILD': 'cp3?-*',
-        'CIBW_SKIP': 'cp37-*',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BUILD": "cp3?-*",
+            "CIBW_SKIP": "cp37-*",
+        },
+    )

    # check that we got the right wheels. There should be no 2.7 or 3.7.
-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                       if ('-cp3' in w) and ('-cp37' not in w)]
+    expected_wheels = [
+        w for w in utils.expected_wheels("spam", "0.1.0") if ("-cp3" in w) and ("-cp37" not in w)
+    ]
    assert set(actual_wheels) == set(expected_wheels)
@@ -8,7 +8,7 @@ from .test_projects import TestProject

 cpp_test_project = TestProject()

-cpp_test_project.files['setup.py'] = jinja2.Template(r'''
+setup_py_template = r"""
 from setuptools import Extension, setup

 setup(
@@ -16,9 +16,9 @@ setup(
    ext_modules=[Extension('spam', sources=['spam.cpp'], language="c++", extra_compile_args={{ extra_compile_args }})],
    version="0.1.0",
 )
-''')
+"""

-cpp_test_project.files['spam.cpp'] = jinja2.Template(r'''
+spam_cpp_template = r"""
 #include <Python.h>

 {{ spam_cpp_top_level_add }}
@@ -69,53 +69,60 @@ MOD_INIT(spam)

    MOD_RETURN(m)
 }
-''')
+"""

+cpp_test_project.files["setup.py"] = jinja2.Template(setup_py_template)
+cpp_test_project.files["spam.cpp"] = jinja2.Template(spam_cpp_template)

 cpp11_project = cpp_test_project.copy()
-cpp11_project.template_context['extra_compile_args'] = (
-    ['/std:c++11'] if utils.platform == 'windows' else ['-std=c++11']
+cpp11_project.template_context["extra_compile_args"] = (
+    ["/std:c++11"] if utils.platform == "windows" else ["-std=c++11"]
 )
-cpp11_project.template_context['spam_cpp_top_level_add'] = '#include <array>'
+cpp11_project.template_context["spam_cpp_top_level_add"] = "#include <array>"


 def test_cpp11(tmp_path):
    # This test checks that the C++11 standard is supported
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"

    cpp11_project.generate(project_dir)

    # VC++ for Python 2.7 does not support modern standards
-    add_env = {'CIBW_SKIP': 'cp27-win* pp27-win32'}
+    add_env = {"CIBW_SKIP": "cp27-win* pp27-win32"}

    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=add_env)
-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                       if 'cp27-cp27m-win' not in w and 'pp27-pypy_73-win32' not in w]
+    expected_wheels = [
+        w
+        for w in utils.expected_wheels("spam", "0.1.0")
+        if "cp27-cp27m-win" not in w and "pp27-pypy_73-win32" not in w
+    ]

    assert set(actual_wheels) == set(expected_wheels)


 cpp14_project = cpp_test_project.copy()
-cpp14_project.template_context['extra_compile_args'] = (
-    ['/std:c++14'] if utils.platform == 'windows' else ['-std=c++14']
+cpp14_project.template_context["extra_compile_args"] = (
+    ["/std:c++14"] if utils.platform == "windows" else ["-std=c++14"]
 )
-cpp14_project.template_context['spam_cpp_top_level_add'] = "int a = 100'000;"
+cpp14_project.template_context["spam_cpp_top_level_add"] = "int a = 100'000;"


 def test_cpp14(tmp_path):
    # This test checks that the C++14 standard is supported
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"

    cpp14_project.generate(project_dir)

    # VC++ for Python 2.7 does not support modern standards
    # The manylinux1 docker image does not have a compiler which supports C++11
-    add_env = {'CIBW_SKIP': 'cp27-win* pp27-win32'}
+    add_env = {"CIBW_SKIP": "cp27-win* pp27-win32"}

    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=add_env)
-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                       if 'cp27-cp27m-win' not in w
-                       and 'pp27-pypy_73-win32' not in w]
+    expected_wheels = [
+        w
+        for w in utils.expected_wheels("spam", "0.1.0")
+        if "cp27-cp27m-win" not in w and "pp27-pypy_73-win32" not in w
+    ]

    assert set(actual_wheels) == set(expected_wheels)

@@ -124,35 +131,39 @@ cpp17_project = cpp_test_project.copy()

 # Python and PyPy 2.7 headers use the `register` keyword, which is forbidden in
 # the C++17 standard, so we need the -Wno-register or /wd5033 options
-cpp17_project.template_context['extra_compile_args'] = (
-    ['/std:c++17', '/wd5033'] if utils.platform == 'windows' else ['-std=c++17', '-Wno-register']
+cpp17_project.template_context["extra_compile_args"] = (
+    ["/std:c++17", "/wd5033"] if utils.platform == "windows" else ["-std=c++17", "-Wno-register"]
 )
-cpp17_project.template_context['spam_cpp_top_level_add'] = r'''
+cpp17_project.template_context[
+    "spam_cpp_top_level_add"
+] = r"""
 #include <utility>
 auto a = std::pair(5.0, false);
-'''
+"""


 def test_cpp17(tmp_path):
    # This test checks that the C++17 standard is supported
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"

    cpp17_project.generate(project_dir)

-    if os.environ.get('APPVEYOR_BUILD_WORKER_IMAGE', '') == 'Visual Studio 2015':
-        pytest.skip('Visual Studio 2015 does not support C++17')
+    if os.environ.get("APPVEYOR_BUILD_WORKER_IMAGE", "") == "Visual Studio 2015":
+        pytest.skip("Visual Studio 2015 does not support C++17")

    # Pypy's distutils sets the default compiler to 'msvc9compiler', which
    # is too old to support cpp17.
-    add_env = {'CIBW_SKIP': 'cp27-win* pp??-*'}
+    add_env = {"CIBW_SKIP": "cp27-win* pp??-*"}

-    if utils.platform == 'macos':
-        add_env['MACOSX_DEPLOYMENT_TARGET'] = '10.13'
+    if utils.platform == "macos":
+        add_env["MACOSX_DEPLOYMENT_TARGET"] = "10.13"

    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=add_env)
-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0', macosx_deployment_target='10.13')
-                       if 'cp27-cp27m-win' not in w
-                       and '-pp' not in w]
+    expected_wheels = [
+        w
+        for w in utils.expected_wheels("spam", "0.1.0", macosx_deployment_target="10.13")
+        if "cp27-cp27m-win" not in w and "-pp" not in w
+    ]

    assert set(actual_wheels) == set(expected_wheels)

@@ -160,13 +171,13 @@ def test_cpp17(tmp_path):
 def test_cpp17_py27_modern_msvc_workaround(tmp_path):
    # This test checks the workaround for building Python 2.7 wheel with MSVC 14

-    if utils.platform != 'windows':
-        pytest.skip('the test is only relevant to the Windows build')
+    if utils.platform != "windows":
+        pytest.skip("the test is only relevant to the Windows build")

-    if os.environ.get('APPVEYOR_BUILD_WORKER_IMAGE', '') == 'Visual Studio 2015':
-        pytest.skip('Visual Studio 2015 does not support C++17')
+    if os.environ.get("APPVEYOR_BUILD_WORKER_IMAGE", "") == "Visual Studio 2015":
+        pytest.skip("Visual Studio 2015 does not support C++17")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    cpp17_project.generate(project_dir)

    # VC++ for Python 2.7 (i.e., MSVC 9) does not support modern standards
@@ -175,7 +186,7 @@ def test_cpp17_py27_modern_msvc_workaround(tmp_path):
    # included with Python: see documentation for more info
    # DISTUTILS_USE_SDK and MSSdk=1 tell distutils/setuptools that we are adding
    # MSVC's compiler, tools, and libraries to PATH ourselves
-    add_env = {'DISTUTILS_USE_SDK': '1', 'MSSdk': '1'}
+    add_env = {"DISTUTILS_USE_SDK": "1", "MSSdk": "1"}

    # Use existing setuptools code to run Visual Studio's vcvarsall.bat and get the
    # necessary environment variables, since running vcvarsall.bat in a subprocess
@@ -190,20 +201,22 @@ def test_cpp17_py27_modern_msvc_workaround(tmp_path):
    def add_vcvars(prev_env, platform):
        vcvarsall_env = setuptools.msvc.msvc14_get_vc_env(platform)
        env = prev_env.copy()
-        for vcvar in ['path', 'include', 'lib']:
+        for vcvar in ["path", "include", "lib"]:
            env[vcvar] = vcvarsall_env[vcvar]
        return env

-    add_env_x86 = add_vcvars(add_env, 'x86')
-    add_env_x86['CIBW_BUILD'] = '?p27-win32'
+    add_env_x86 = add_vcvars(add_env, "x86")
+    add_env_x86["CIBW_BUILD"] = "?p27-win32"
    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=add_env_x86)

-    add_env_x64 = add_vcvars(add_env, 'x64')
-    add_env_x64['CIBW_BUILD'] = 'cp27-win_amd64'
+    add_env_x64 = add_vcvars(add_env, "x64")
+    add_env_x64["CIBW_BUILD"] = "cp27-win_amd64"
    actual_wheels += utils.cibuildwheel_run(project_dir, add_env=add_env_x64)

-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0', exclude_27=False)
-                       if 'cp27-cp27m-win' in w
-                       or 'pp27-pypy_73-win32' in w]
+    expected_wheels = [
+        w
+        for w in utils.expected_wheels("spam", "0.1.0", exclude_27=False)
+        if "cp27-cp27m-win" in w or "pp27-pypy_73-win32" in w
+    ]

    assert set(actual_wheels) == set(expected_wheels)
@@ -8,7 +8,8 @@ import cibuildwheel.util
 from . import test_projects, utils

 project_with_expected_version_checks = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent(r'''
+    setup_py_add=textwrap.dedent(
+        r"""
        import subprocess
        import os

@@ -30,146 +31,157 @@ project_with_expected_version_checks = test_projects.new_c_project(
            assert '{}=={}'.format(package_name, expected_version) in versions, (
                'error: {} version should equal {}'.format(package_name, expected_version)
            )
-    ''')
+        """
+    )
 )


-VERSION_REGEX = r'([\w-]+)==([^\s]+)'
+VERSION_REGEX = r"([\w-]+)==([^\s]+)"


 def get_versions_from_constraint_file(constraint_file):
-    constraint_file_text = constraint_file.read_text(encoding='utf8')
+    constraint_file_text = constraint_file.read_text(encoding="utf8")

-    versions = {}
-    for package, version in re.findall(VERSION_REGEX, constraint_file_text):
-        versions[package] = version
-
-    return versions
+    return {
+        package: version for package, version in re.findall(VERSION_REGEX, constraint_file_text)
+    }


-@pytest.mark.parametrize('python_version', ['2.7', '3.5', '3.6', '3.8'])
+@pytest.mark.parametrize("python_version", ["2.7", "3.5", "3.6", "3.8"])
 def test_pinned_versions(tmp_path, python_version):
-    if utils.platform == 'linux':
-        pytest.skip('linux doesn\'t pin individual tool versions, it pins manylinux images instead')
+    if utils.platform == "linux":
+        pytest.skip("linux doesn't pin individual tool versions, it pins manylinux images instead")

-    if utils.IS_WINDOWS_RUNNING_ON_TRAVIS and python_version == '2.7':
-        pytest.skip('Windows + Travis CI requires a workaround')
+    if utils.platform == "windows" and python_version == "2.7":
+        pytest.skip("Windows requires a workaround")

-    is_running_on_macos_11_or_later = (
-        utils.platform == 'macos' and utils.get_macos_version() >= (10, 16)
-    )
+    is_macos_11_or_later = utils.platform == "macos" and utils.get_macos_version() >= (10, 16)

-    if is_running_on_macos_11_or_later and python_version == '3.5':
-        pytest.skip('CPython 3.5 doesn\'t work on macOS Big Sur+')
+    if is_macos_11_or_later and python_version == "3.5":
+        pytest.skip("CPython 3.5 doesn't work on macOS Big Sur+")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_expected_version_checks.generate(project_dir)

    build_environment = {}

-    if python_version == '2.7':
-        constraint_filename = 'constraints-python27.txt'
-        build_pattern = '[cp]p27-*'
-    elif python_version == '3.5':
-        constraint_filename = 'constraints-python35.txt'
-        build_pattern = '[cp]p35-*'
-    elif python_version == '3.6':
-        constraint_filename = 'constraints-python36.txt'
-        build_pattern = '[cp]p36-*'
-    elif python_version == '3.7':
-        constraint_filename = 'constraints-python37.txt'
-        build_pattern = '[cp]p37-*'
+    if python_version == "2.7":
+        constraint_filename = "constraints-python27.txt"
+        build_pattern = "[cp]p27-*"
+    elif python_version == "3.5":
+        constraint_filename = "constraints-python35.txt"
+        build_pattern = "[cp]p35-*"
+    elif python_version == "3.6":
+        constraint_filename = "constraints-python36.txt"
+        build_pattern = "[cp]p36-*"
+    elif python_version == "3.7":
+        constraint_filename = "constraints-python37.txt"
+        build_pattern = "[cp]p37-*"
    else:
-        constraint_filename = 'constraints.txt'
-        build_pattern = '[cp]p38-*'
+        constraint_filename = "constraints.txt"
+        build_pattern = "[cp]p38-*"

    constraint_file = cibuildwheel.util.resources_dir / constraint_filename
    constraint_versions = get_versions_from_constraint_file(constraint_file)

-    for package in ['pip', 'setuptools', 'wheel', 'virtualenv']:
-        env_name = f'EXPECTED_{package.upper()}_VERSION'
+    for package in ["pip", "setuptools", "wheel", "virtualenv"]:
+        env_name = f"EXPECTED_{package.upper()}_VERSION"
        build_environment[env_name] = constraint_versions[package]

-    cibw_environment_option = ' '.join(
-        [f'{k}={v}' for k, v in build_environment.items()]
-    )
+    cibw_environment_option = " ".join(f"{k}={v}" for k, v in build_environment.items())

    # build and test the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BUILD': build_pattern,
-        'CIBW_ENVIRONMENT': cibw_environment_option,
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BUILD": build_pattern,
+            "CIBW_ENVIRONMENT": cibw_environment_option,
+        },
+    )

    # also check that we got the right wheels
-    if python_version == '2.7':
-        expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                           if '-cp27' in w or '-pp27' in w]
-    elif python_version == '3.5':
-        expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                           if '-cp35' in w or '-pp35' in w]
-    elif python_version == '3.6':
-        expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                           if '-cp36' in w or '-pp36' in w]
-    elif python_version == '3.8':
-        expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                           if '-cp38' in w or '-pp38' in w]
+    if python_version == "2.7":
+        expected_wheels = [
+            w for w in utils.expected_wheels("spam", "0.1.0") if "-cp27" in w or "-pp27" in w
+        ]
+    elif python_version == "3.5":
+        expected_wheels = [
+            w for w in utils.expected_wheels("spam", "0.1.0") if "-cp35" in w or "-pp35" in w
+        ]
+    elif python_version == "3.6":
+        expected_wheels = [
+            w for w in utils.expected_wheels("spam", "0.1.0") if "-cp36" in w or "-pp36" in w
+        ]
+    elif python_version == "3.8":
+        expected_wheels = [
+            w for w in utils.expected_wheels("spam", "0.1.0") if "-cp38" in w or "-pp38" in w
+        ]
    else:
-        raise ValueError('unhandled python version')
+        raise ValueError("unhandled python version")

    assert set(actual_wheels) == set(expected_wheels)


-@pytest.mark.parametrize('python_version', ['2.7', '3.x'])
+@pytest.mark.parametrize("python_version", ["2.7", "3.x"])
 def test_dependency_constraints_file(tmp_path, python_version):
-    if utils.platform == 'linux':
-        pytest.skip('linux doesn\'t pin individual tool versions, it pins manylinux images instead')
+    if utils.platform == "linux":
+        pytest.skip("linux doesn't pin individual tool versions, it pins manylinux images instead")

-    if utils.IS_WINDOWS_RUNNING_ON_TRAVIS and python_version == '2.7':
-        pytest.skip('Windows + Travis CI requires a workaround')
+    if utils.platform == "windows" and python_version == "2.7":
+        pytest.skip("Windows + Travis CI requires a workaround")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_expected_version_checks.generate(project_dir)

    tool_versions = {
-        'pip': '20.0.2',
-        'setuptools': '44.0.0' if python_version == '2.7' else '46.0.0',
-        'wheel': '0.34.2',
-        'virtualenv': '20.0.10',
+        "pip": "20.0.2",
+        "setuptools": "44.0.0" if python_version == "2.7" else "46.0.0",
+        "wheel": "0.34.2",
+        "virtualenv": "20.0.10",
    }

-    constraints_file = tmp_path / 'constraints.txt'
-    constraints_file.write_text(textwrap.dedent(
-        '''
+    constraints_file = tmp_path / "constraints.txt"
+    constraints_file.write_text(
+        textwrap.dedent(
+            """
            pip=={pip}
            setuptools=={setuptools}
            wheel=={wheel}
            virtualenv=={virtualenv}
-        '''.format(**tool_versions)
-    ))
+            """.format(
+                **tool_versions
+            )
+        )
+    )

    build_environment = {}

    for package_name, version in tool_versions.items():
-        env_name = f'EXPECTED_{package_name.upper()}_VERSION'
+        env_name = f"EXPECTED_{package_name.upper()}_VERSION"
        build_environment[env_name] = version

-    cibw_environment_option = ' '.join(
-        [f'{k}={v}' for k, v in build_environment.items()]
-    )
+    cibw_environment_option = " ".join(f"{k}={v}" for k, v in build_environment.items())

    # build and test the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BUILD': '[cp]p27-*' if python_version == '2.7' else '[cp]p3?-*',
-        'CIBW_ENVIRONMENT': cibw_environment_option,
-        'CIBW_DEPENDENCY_VERSIONS': str(constraints_file),
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BUILD": "[cp]p27-*" if python_version == "2.7" else "[cp]p3?-*",
+            "CIBW_ENVIRONMENT": cibw_environment_option,
+            "CIBW_DEPENDENCY_VERSIONS": str(constraints_file),
+        },
+    )

    # also check that we got the right wheels
-    if python_version == '2.7':
-        expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                           if '-cp27' in w or '-pp27' in w]
+    if python_version == "2.7":
+        expected_wheels = [
+            w for w in utils.expected_wheels("spam", "0.1.0") if "-cp27" in w or "-pp27" in w
+        ]
    else:
-        expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                           if '-cp27' not in w and '-pp27' not in w]
+        expected_wheels = [
+            w
+            for w in utils.expected_wheels("spam", "0.1.0")
+            if "-cp27" not in w and "-pp27" not in w
+        ]

    assert set(actual_wheels) == set(expected_wheels)
@@ -6,7 +6,8 @@ import pytest
 from . import test_projects, utils

 dockcross_only_project = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent(r'''
+    setup_py_add=textwrap.dedent(
+        r"""
        import os

        # check that we're running in the correct docker image as specified in the
@@ -15,26 +16,35 @@ dockcross_only_project = test_projects.new_c_project(
            raise Exception(
                "/dockcross directory not found. Is this test running in the correct docker image?"
            )
-    ''')
+        """
+    )
 )


 def test(tmp_path):
-    if utils.platform != 'linux':
-        pytest.skip('the test is only relevant to the linux build')
-    if platform.machine() not in ['x86_64', 'i686']:
-        pytest.skip('this test is currently only possible on x86_64/i686 due to availability of alternative images')
+    if utils.platform != "linux":
+        pytest.skip("the test is only relevant to the linux build")
+    if platform.machine() not in ["x86_64", "i686"]:
+        pytest.skip(
+            "this test is currently only possible on x86_64/i686 due to availability of alternative images"
+        )

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    dockcross_only_project.generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_MANYLINUX_X86_64_IMAGE': 'dockcross/manylinux2010-x64',
-        'CIBW_MANYLINUX_I686_IMAGE': 'dockcross/manylinux2010-x86',
-        'CIBW_SKIP': 'pp* cp27-* cp39-*',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_MANYLINUX_X86_64_IMAGE": "dockcross/manylinux2010-x64:20210210-84c47e5",
+            "CIBW_MANYLINUX_I686_IMAGE": "dockcross/manylinux2010-x86:20210210-84c47e5",
+            "CIBW_SKIP": "pp* cp27-* cp39-*",
+        },
+    )

    # also check that we got the right wheels built
-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                       if '-pp' not in w and '-cp39-' not in w and '-cp27-' not in w]
+    expected_wheels = [
+        w
+        for w in utils.expected_wheels("spam", "0.1.0")
+        if "-pp" not in w and "-cp39-" not in w and "-cp27-" not in w
+    ]
    assert set(actual_wheels) == set(expected_wheels)
@@ -6,48 +6,56 @@ from . import test_projects, utils

 project_with_a_test = test_projects.new_c_project()

-project_with_a_test.files['test/spam_test.py'] = r'''
+project_with_a_test.files[
+    "test/spam_test.py"
+] = r"""
 import spam

 def test_spam():
    assert spam.system('python -c "exit(0)"') == 0
    assert spam.system('python -c "exit(1)"') != 0
-'''
+"""


@pytest.mark.emulation
 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_a_test.generate(project_dir)

    # build and test the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_TEST_REQUIRES': 'pytest',
-        'CIBW_TEST_COMMAND': 'pytest {project}/test',
-        'CIBW_ARCHS': 'aarch64 ppc64le s390x',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_TEST_REQUIRES": "pytest",
+            "CIBW_TEST_COMMAND": "pytest {project}/test",
+            "CIBW_ARCHS": "aarch64 ppc64le s390x",
+        },
+    )

    # also check that we got the right wheels
    expected_wheels = (
-        utils.expected_wheels('spam', '0.1.0', machine_arch='aarch64')
-        + utils.expected_wheels('spam', '0.1.0', machine_arch='ppc64le')
-        + utils.expected_wheels('spam', '0.1.0', machine_arch='s390x')
+        utils.expected_wheels("spam", "0.1.0", machine_arch="aarch64")
+        + utils.expected_wheels("spam", "0.1.0", machine_arch="ppc64le")
+        + utils.expected_wheels("spam", "0.1.0", machine_arch="s390x")
    )
    assert set(actual_wheels) == set(expected_wheels)


 def test_setting_arch_on_other_platforms(tmp_path, capfd):
-    if utils.platform == 'linux':
-        pytest.skip('this test checks the behaviour on platforms other than linux')
+    if utils.platform == "linux":
+        pytest.skip("this test checks the behaviour on platforms other than linux")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_a_test.generate(project_dir)

    # build and test the wheels
    with pytest.raises(subprocess.CalledProcessError):
-        utils.cibuildwheel_run(project_dir, add_env={
-            'CIBW_ARCHS': 'aarch64',
-        })
+        utils.cibuildwheel_run(
+            project_dir,
+            add_env={
+                "CIBW_ARCHS": "aarch64",
+            },
+        )

    captured = capfd.readouterr()
    assert "Invalid archs option" in captured.err
@@ -7,7 +7,8 @@ import pytest
 from . import test_projects, utils

 project_with_environment_asserts = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent(r'''
+    setup_py_add=textwrap.dedent(
+        r"""
        import os

        # explode if environment isn't correct, as set in CIBW_ENVIRONMENT
@@ -26,30 +27,34 @@ project_with_environment_asserts = test_projects.new_c_project(
            raise Exception('PATH should contain "/opt/cibw_test_path". It was "%s"' % PATH)
        if "$PATH" in PATH:
            raise Exception('$PATH should be expanded in PATH. It was "%s"' % PATH)
-    ''')
+        """
+    )
 )


 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_environment_asserts.generate(project_dir)

    # write some information into the CIBW_ENVIRONMENT, for expansion and
    # insertion into the environment by cibuildwheel. This is checked
    # in setup.py
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_ENVIRONMENT': '''CIBW_TEST_VAR="a b c" CIBW_TEST_VAR_2=1 CIBW_TEST_VAR_3="$(echo 'test string 3')" PATH=$PATH:/opt/cibw_test_path''',
-        'CIBW_ENVIRONMENT_WINDOWS': '''CIBW_TEST_VAR="a b c" CIBW_TEST_VAR_2=1 CIBW_TEST_VAR_3="$(echo 'test string 3')" PATH="$PATH;/opt/cibw_test_path"''',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_ENVIRONMENT": """CIBW_TEST_VAR="a b c" CIBW_TEST_VAR_2=1 CIBW_TEST_VAR_3="$(echo 'test string 3')" PATH=$PATH:/opt/cibw_test_path""",
+            "CIBW_ENVIRONMENT_WINDOWS": '''CIBW_TEST_VAR="a b c" CIBW_TEST_VAR_2=1 CIBW_TEST_VAR_3="$(echo 'test string 3')" PATH="$PATH;/opt/cibw_test_path"''',
+        },
+    )

    # also check that we got the right wheels built
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)


 def test_overridden_path(tmp_path, capfd):
-    project_dir = tmp_path / 'project'
-    output_dir = tmp_path / 'output'
+    project_dir = tmp_path / "project"
+    output_dir = tmp_path / "output"

    project = test_projects.new_c_project()
    project.generate(project_dir)
@@ -57,20 +62,28 @@ def test_overridden_path(tmp_path, capfd):

    # mess up PATH, somehow
    with pytest.raises(subprocess.CalledProcessError):
-        if utils.platform == 'linux':
-            utils.cibuildwheel_run(project_dir, output_dir=output_dir, add_env={
-                'CIBW_BEFORE_ALL': 'mkdir new_path && touch new_path/python && chmod +x new_path/python',
-                'CIBW_ENVIRONMENT': '''PATH="$(pwd)/new_path:$PATH"''',
-            })
+        if utils.platform == "linux":
+            utils.cibuildwheel_run(
+                project_dir,
+                output_dir=output_dir,
+                add_env={
+                    "CIBW_BEFORE_ALL": "mkdir new_path && touch new_path/python && chmod +x new_path/python",
+                    "CIBW_ENVIRONMENT": '''PATH="$(pwd)/new_path:$PATH"''',
+                },
+            )
        else:
-            new_path = tmp_path / 'another_bin'
+            new_path = tmp_path / "another_bin"
            new_path.mkdir()
-            (new_path / 'python').touch(mode=0o777)
+            (new_path / "python").touch(mode=0o777)

-            utils.cibuildwheel_run(project_dir, output_dir=output_dir, add_env={
-                'NEW_PATH': str(new_path),
-                'CIBW_ENVIRONMENT': f'''PATH="$NEW_PATH{os.pathsep}$PATH"''',
-            })
+            utils.cibuildwheel_run(
+                project_dir,
+                output_dir=output_dir,
+                add_env={
+                    "NEW_PATH": str(new_path),
+                    "CIBW_ENVIRONMENT": f'''PATH="$NEW_PATH{os.pathsep}$PATH"''',
+                },
+            )

    assert len(os.listdir(output_dir)) == 0
    captured = capfd.readouterr()
@@ -8,15 +8,15 @@ from . import test_projects, utils

 basic_project = test_projects.new_c_project()

-ALL_MACOS_WHEELS = (
-    utils.expected_wheels('spam', '0.1.0', machine_arch='x86_64')
-    + utils.expected_wheels('spam', '0.1.0', machine_arch='arm64')
-)
+ALL_MACOS_WHEELS = {
+    *utils.expected_wheels("spam", "0.1.0", machine_arch="x86_64"),
+    *utils.expected_wheels("spam", "0.1.0", machine_arch="arm64"),
+}


 def get_xcode_version() -> Tuple[int, int]:
    output = subprocess.run(
-        ['xcodebuild', '-version'],
+        ["xcodebuild", "-version"],
        universal_newlines=True,
        check=True,
        stdout=subprocess.PIPE,
@@ -24,98 +24,112 @@ def get_xcode_version() -> Tuple[int, int]:
    lines = output.splitlines()
    _, version_str = lines[0].split()

-    version_parts = version_str.split('.')
+    version_parts = version_str.split(".")
    return (int(version_parts[0]), int(version_parts[1]))


 def test_cross_compiled_build(tmp_path):
-    if utils.platform != 'macos':
-        pytest.skip('this test is only relevant to macos')
+    if utils.platform != "macos":
+        pytest.skip("this test is only relevant to macos")
    if get_xcode_version() < (12, 2):
-        pytest.skip('this test only works with Xcode 12.2 or greater')
+        pytest.skip("this test only works with Xcode 12.2 or greater")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    basic_project.generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BUILD': 'cp39-*',
-        'CIBW_ARCHS': 'x86_64, universal2, arm64',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BUILD": "cp39-*",
+            "CIBW_ARCHS": "x86_64, universal2, arm64",
+        },
+    )

-    expected_wheels = [w for w in ALL_MACOS_WHEELS if 'cp39' in w]
+    expected_wheels = [w for w in ALL_MACOS_WHEELS if "cp39" in w]
    assert set(actual_wheels) == set(expected_wheels)


-@pytest.mark.parametrize('build_universal2', [False, True])
+@pytest.mark.parametrize("build_universal2", [False, True])
 def test_cross_compiled_test(tmp_path, capfd, build_universal2):
-    if utils.platform != 'macos':
-        pytest.skip('this test is only relevant to macos')
+    if utils.platform != "macos":
+        pytest.skip("this test is only relevant to macos")
    if get_xcode_version() < (12, 2):
-        pytest.skip('this test only works with Xcode 12.2 or greater')
+        pytest.skip("this test only works with Xcode 12.2 or greater")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    basic_project.generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BUILD': 'cp39-*',
-        'CIBW_TEST_COMMAND': '''python -c "import platform; print('running tests on ' + platform.machine())"''',
-        'CIBW_ARCHS': 'universal2' if build_universal2 else 'x86_64 arm64',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BUILD": "cp39-*",
+            "CIBW_TEST_COMMAND": '''python -c "import platform; print('running tests on ' + platform.machine())"''',
+            "CIBW_ARCHS": "universal2" if build_universal2 else "x86_64 arm64",
+        },
+    )

    captured = capfd.readouterr()

-    if platform.machine() == 'x86_64':
+    if platform.machine() == "x86_64":
        # ensure that tests were run on only x86_64
-        assert 'running tests on x86_64' in captured.out
-        assert 'running tests on arm64' not in captured.out
+        assert "running tests on x86_64" in captured.out
+        assert "running tests on arm64" not in captured.out
        if build_universal2:
-            assert 'While universal2 wheels can be built on x86_64, the arm64 part of them cannot currently be tested' in captured.err
+            assert (
+                "While universal2 wheels can be built on x86_64, the arm64 part of them cannot currently be tested"
+                in captured.err
+            )
        else:
-            assert 'While arm64 wheels can be built on x86_64, they cannot be tested' in captured.err
-    elif platform.machine() == 'arm64':
+            assert (
+                "While arm64 wheels can be built on x86_64, they cannot be tested" in captured.err
+            )
+    elif platform.machine() == "arm64":
        # ensure that tests were run on both x86_64 and arm64
-        assert 'running tests on x86_64' in captured.out
-        assert 'running tests on arm64' in captured.out
+        assert "running tests on x86_64" in captured.out
+        assert "running tests on arm64" in captured.out

    if build_universal2:
-        expected_wheels = [w for w in ALL_MACOS_WHEELS if 'cp39' in w and 'universal2' in w]
+        expected_wheels = [w for w in ALL_MACOS_WHEELS if "cp39" in w and "universal2" in w]
    else:
-        expected_wheels = [w for w in ALL_MACOS_WHEELS if 'cp39' in w and 'universal2' not in w]
+        expected_wheels = [w for w in ALL_MACOS_WHEELS if "cp39" in w and "universal2" not in w]

    assert set(actual_wheels) == set(expected_wheels)


-@pytest.mark.parametrize('skip_arm64_test', [False, True])
+@pytest.mark.parametrize("skip_arm64_test", [False, True])
 def test_universal2_testing(tmp_path, capfd, skip_arm64_test):
-    if utils.platform != 'macos':
-        pytest.skip('this test is only relevant to macos')
+    if utils.platform != "macos":
+        pytest.skip("this test is only relevant to macos")
    if get_xcode_version() < (12, 2):
-        pytest.skip('this test only works with Xcode 12.2 or greater')
-    if platform.machine() != 'x86_64':
-        pytest.skip('this test only works on x86_64')
+        pytest.skip("this test only works with Xcode 12.2 or greater")
+    if platform.machine() != "x86_64":
+        pytest.skip("this test only works on x86_64")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    basic_project.generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_BUILD': 'cp39-*',
-        'CIBW_TEST_COMMAND': '''python -c "import platform; print('running tests on ' + platform.machine())"''',
-        'CIBW_ARCHS': 'universal2',
-        'CIBW_TEST_SKIP': '*_universal2:arm64' if skip_arm64_test else '',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_BUILD": "cp39-*",
+            "CIBW_TEST_COMMAND": '''python -c "import platform; print('running tests on ' + platform.machine())"''',
+            "CIBW_ARCHS": "universal2",
+            "CIBW_TEST_SKIP": "*_universal2:arm64" if skip_arm64_test else "",
+        },
+    )

    captured = capfd.readouterr()

-    if platform.machine() == 'x86_64':
-        assert 'running tests on x86_64' in captured.out
-        assert 'running tests on arm64' not in captured.out
+    if platform.machine() == "x86_64":
+        assert "running tests on x86_64" in captured.out
+        assert "running tests on arm64" not in captured.out

-        warning_message = 'While universal2 wheels can be built on x86_64, the arm64 part of them cannot currently be tested'
+        warning_message = "While universal2 wheels can be built on x86_64, the arm64 part of them cannot currently be tested"
        if skip_arm64_test:
            assert warning_message not in captured.err
        else:
            assert warning_message in captured.err

-    expected_wheels = [w for w in ALL_MACOS_WHEELS if 'cp39' in w and 'universal2' in w]
+    expected_wheels = [w for w in ALL_MACOS_WHEELS if "cp39" in w and "universal2" in w]

    assert set(actual_wheels) == set(expected_wheels)
@@ -7,7 +7,8 @@ from . import test_projects, utils

 # TODO: specify these at runtime according to manylinux_image
 project_with_manylinux_symbols = test_projects.new_c_project(
-    spam_c_top_level_add=textwrap.dedent(r'''
+    spam_c_top_level_add=textwrap.dedent(
+        r"""
        #include <malloc.h>
        #include <stdlib.h>
        #include <stdint.h>
@@ -20,8 +21,10 @@ project_with_manylinux_symbols = test_projects.new_c_project(
        #if !__GLIBC_PREREQ(2, 5)  /* manylinux1 is glibc 2.5 */
        #error "Must run on a glibc >= 2.5 linux environment"
        #endif
-    '''),
-    spam_c_function_add=textwrap.dedent(r'''
+        """
+    ),
+    spam_c_function_add=textwrap.dedent(
+        r"""
        #if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 24)
            // nextupf is only available in manylinux_2_24+
            sts = (int)nextupf(0.0F);
@@ -32,44 +35,50 @@ project_with_manylinux_symbols = test_projects.new_c_project(
            // malloc_info is only available on manylinux2010+
            sts = malloc_info(0, stdout);
        #endif
-    '''),
+        """
+    ),
 )


-@pytest.mark.parametrize('manylinux_image', ['manylinux1', 'manylinux2010', 'manylinux2014', 'manylinux_2_24'])
+@pytest.mark.parametrize(
+    "manylinux_image", ["manylinux1", "manylinux2010", "manylinux2014", "manylinux_2_24"]
+)
 def test(manylinux_image, tmp_path):
-    if utils.platform != 'linux':
-        pytest.skip('the docker test is only relevant to the linux build')
-    elif platform.machine() not in ['x86_64', 'i686']:
-        if manylinux_image in ['manylinux1', 'manylinux2010']:
+    if utils.platform != "linux":
+        pytest.skip("the docker test is only relevant to the linux build")
+    elif platform.machine() not in ["x86_64", "i686"]:
+        if manylinux_image in ["manylinux1", "manylinux2010"]:
            pytest.skip("manylinux1 and 2010 doesn't exist for non-x86 architectures")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_manylinux_symbols.generate(project_dir)

    # build the wheels
    # CFLAGS environment variable is necessary to fail on 'malloc_info' (on manylinux1) during compilation/linking,
    # rather than when dynamically loading the Python
    add_env = {
-        'CIBW_ENVIRONMENT': 'CFLAGS="$CFLAGS -O0 -Werror=implicit-function-declaration"',
-        'CIBW_MANYLINUX_X86_64_IMAGE': manylinux_image,
-        'CIBW_MANYLINUX_I686_IMAGE': manylinux_image,
-        'CIBW_MANYLINUX_PYPY_X86_64_IMAGE': manylinux_image,
-        'CIBW_MANYLINUX_AARCH64_IMAGE': manylinux_image,
-        'CIBW_MANYLINUX_PPC64LE_IMAGE': manylinux_image,
-        'CIBW_MANYLINUX_S390X_IMAGE': manylinux_image,
+        "CIBW_ENVIRONMENT": 'CFLAGS="$CFLAGS -O0 -Werror=implicit-function-declaration"',
+        "CIBW_MANYLINUX_X86_64_IMAGE": manylinux_image,
+        "CIBW_MANYLINUX_I686_IMAGE": manylinux_image,
+        "CIBW_MANYLINUX_PYPY_X86_64_IMAGE": manylinux_image,
+        "CIBW_MANYLINUX_AARCH64_IMAGE": manylinux_image,
+        "CIBW_MANYLINUX_PPC64LE_IMAGE": manylinux_image,
+        "CIBW_MANYLINUX_S390X_IMAGE": manylinux_image,
    }
-    if manylinux_image == 'manylinux1':
+    if manylinux_image == "manylinux1":
        # We don't have a manylinux1 image for PyPy
-        add_env['CIBW_SKIP'] = 'pp*'
-    elif manylinux_image in {'manylinux2014', 'manylinux_2_24'}:
+        add_env["CIBW_SKIP"] = "pp*"
+    elif manylinux_image in {"manylinux2014", "manylinux_2_24"}:
        # We don't have a manylinux2014 / 'manylinux_2_24' image for PyPy (yet?)
-        add_env['CIBW_SKIP'] = 'cp27* pp*'  # Python 2.7 not available on manylinux2014 / 'manylinux_2_24'
+        # Python 2.7 not available on manylinux2014 / 'manylinux_2_24'
+        add_env["CIBW_SKIP"] = "cp27* pp*"
    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=add_env)

-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0', manylinux_versions=[manylinux_image])]
-    if manylinux_image in {'manylinux2014', 'manylinux_2_24'}:
-        expected_wheels = [w for w in expected_wheels if '-cp27' not in w]
-    if manylinux_image in {'manylinux1', 'manylinux2014', 'manylinux_2_24'}:
-        expected_wheels = [w for w in expected_wheels if '-pp' not in w]
+    expected_wheels = [
+        w for w in utils.expected_wheels("spam", "0.1.0", manylinux_versions=[manylinux_image])
+    ]
+    if manylinux_image in {"manylinux2014", "manylinux_2_24"}:
+        expected_wheels = [w for w in expected_wheels if "-cp27" not in w]
+    if manylinux_image in {"manylinux1", "manylinux2014", "manylinux_2_24"}:
+        expected_wheels = [w for w in expected_wheels if "-pp" not in w]
    assert set(actual_wheels) == set(expected_wheels)
@@ -50,7 +50,7 @@ def test_pep518(tmp_path):
    assert set(actual_wheels) == set(expected_wheels)

    # These checks ensure an extra file is not created when using custom
-    # workaround; see https://github.com/joerick/cibuildwheel/issues/421
+    # workaround; see https://github.com/pypa/cibuildwheel/issues/421
    assert not (project_dir / "42").exists()
    assert not (project_dir / "4.1.2").exists()

@@ -8,38 +8,42 @@ from pathlib import Path

 def main():
    parser = ArgumentParser(
-        prog="python -m test.test_projects",
-        description='Generate a test project to check it out'
+        prog="python -m test.test_projects", description="Generate a test project to check it out"
+    )
+    parser.add_argument(
+        "--open",
+        action="store_true",
+        help="Open the generated project in a file explorer",
+    )
+    parser.add_argument(
+        "PROJECT",
+        help="Python path to a project object. E.g. test.test_0_basic.basic_project",
+    )
+    parser.add_argument(
+        "OUTPUT",
+        nargs="?",
+        help="Path to output dir. If no dir is passed, a tempdir will be generated.",
    )
-    parser.add_argument('--open', action='store_true', help='''
-        Open the generated project in a file explorer
-    ''')
-    parser.add_argument('PROJECT', help='''
-        Python path to a project object. E.g. test.test_0_basic.basic_project
-    ''')
-    parser.add_argument('OUTPUT', nargs='?', help='''
-        Path to output dir. If no dir is passed, a tempdir will be generated.
-    ''')
    options = parser.parse_args()

-    module, _, name = options.PROJECT.rpartition('.')
+    module, _, name = options.PROJECT.rpartition(".")

    project = getattr(importlib.import_module(module), name)

    project_dir = Path(options.OUTPUT or tempfile.mkdtemp())
    project.generate(project_dir)

-    print('Project generated at', project_dir)
+    print("Project generated at", project_dir)
    print()

    if options.open:
-        if sys.platform == 'darwin':
-            subprocess.run(['open', '--', project_dir], check=True)
-        elif sys.platform == 'linux2':
-            subprocess.run(['xdg-open', '--', project_dir], check=True)
-        elif sys.platform == 'win32':
-            subprocess.run(['explorer', project_dir], check=True)
+        if sys.platform == "darwin":
+            subprocess.run(["open", "--", project_dir], check=True)
+        elif sys.platform == "linux2":
+            subprocess.run(["xdg-open", "--", project_dir], check=True)
+        elif sys.platform == "win32":
+            subprocess.run(["explorer", project_dir], check=True)


-if __name__ == '__main__':
+if __name__ == "__main__":
    main()
@@ -8,12 +8,13 @@ TemplateContext = Dict[str, Any]


 class TestProject:
-    '''
+    """
    An object that represents a project that can be built by cibuildwheel.
    Can be manipulated in tests by changing `files` and `template_context`.

    Write out to the filesystem using `generate`.
-    '''
+    """
+
    __test__ = False  # Have pytest ignore this class on `from .test_projects import TestProject`

    files: FilesDict
@@ -28,7 +29,7 @@ class TestProject:
            file_path = path / filename
            file_path.parent.mkdir(parents=True, exist_ok=True)

-            with file_path.open('w', encoding='utf8') as f:
+            with file_path.open("w", encoding="utf8") as f:
                if isinstance(content, jinja2.Template):
                    content = content.render(self.template_context)

@@ -2,7 +2,7 @@ import jinja2

 from .base import TestProject

-SPAM_C_TEMPLATE = r'''
+SPAM_C_TEMPLATE = r"""
 #include <Python.h>

 {{ spam_c_top_level_add }}
@@ -57,9 +57,9 @@ MOD_INIT(spam)

    MOD_RETURN(m)
 }
-'''
+"""

-SETUP_PY_TEMPLATE = r'''
+SETUP_PY_TEMPLATE = r"""
 import sys
 from setuptools import setup, Extension

@@ -77,33 +77,43 @@ setup(
    )],
    {{ setup_py_setup_args_add | indent(4) }}
 )
-'''
+"""

-SETUP_CFG_TEMPLATE = r'''
+SETUP_CFG_TEMPLATE = r"""
 [metadata]
 name = spam
 version = 0.1.0

 {{ setup_cfg_add }}
-'''
+"""


-def new_c_project(*, spam_c_top_level_add='', spam_c_function_add='', setup_py_add='',
-                  setup_py_setup_args_add='', setup_cfg_add=''):
+def new_c_project(
+    *,
+    spam_c_top_level_add="",
+    spam_c_function_add="",
+    setup_py_add="",
+    setup_py_setup_args_add="",
+    setup_cfg_add="",
+):
    project = TestProject()

-    project.files.update({
-        'spam.c': jinja2.Template(SPAM_C_TEMPLATE),
-        'setup.py': jinja2.Template(SETUP_PY_TEMPLATE),
-        'setup.cfg': jinja2.Template(SETUP_CFG_TEMPLATE),
-    })
+    project.files.update(
+        {
+            "spam.c": jinja2.Template(SPAM_C_TEMPLATE),
+            "setup.py": jinja2.Template(SETUP_PY_TEMPLATE),
+            "setup.cfg": jinja2.Template(SETUP_CFG_TEMPLATE),
+        }
+    )

-    project.template_context.update({
-        'spam_c_top_level_add': spam_c_top_level_add,
-        'spam_c_function_add': spam_c_function_add,
-        'setup_py_add': setup_py_add,
-        'setup_py_setup_args_add': setup_py_setup_args_add,
-        'setup_cfg_add': setup_cfg_add,
-    })
+    project.template_context.update(
+        {
+            "spam_c_top_level_add": spam_c_top_level_add,
+            "spam_c_function_add": spam_c_function_add,
+            "setup_py_add": setup_py_add,
+            "setup_py_setup_args_add": setup_py_setup_args_add,
+            "setup_cfg_add": setup_cfg_add,
+        }
+    )

    return project
@@ -6,7 +6,9 @@ import pytest
 from . import utils

 pure_python_project = test_projects.TestProject()
-pure_python_project.files['setup.py'] = '''
+pure_python_project.files[
+    "setup.py"
+] = """
 from setuptools import Extension, setup

 setup(
@@ -14,25 +16,27 @@ setup(
    py_modules=['spam'],
    version="0.1.0",
 )
-'''
+"""

-pure_python_project.files['spam.py'] = '''
+pure_python_project.files[
+    "spam.py"
+] = """
 def a_function():
    pass
-'''
+"""


 def test(tmp_path, capfd):
    # this test checks that if a pure wheel is generated, the build should
    # fail.
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    pure_python_project.generate(project_dir)

    with pytest.raises(subprocess.CalledProcessError):
        actual_wheels = utils.cibuildwheel_run(project_dir)
-        print('produced wheels:', actual_wheels)
+        print("produced wheels:", actual_wheels)

    captured = capfd.readouterr()
-    print('out', captured.out)
-    print('err', captured.err)
+    print("out", captured.out)
+    print("err", captured.err)
    assert "Build failed because a pure Python wheel was generated" in captured.err
@@ -3,7 +3,8 @@ import textwrap
 from . import test_projects, utils

 project_with_ssl_tests = test_projects.new_c_project(
-    setup_py_add=textwrap.dedent(r'''
+    setup_py_add=textwrap.dedent(
+        r"""
        import ssl

        if sys.version_info[0] == 2:
@@ -13,19 +14,20 @@ project_with_ssl_tests = test_projects.new_c_project(

        context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
        data = urlopen("https://www.nist.gov", context=context)
-        data = urlopen("https://raw.githubusercontent.com/joerick/cibuildwheel/master/CI.md", context=context)
-        data = urlopen("https://raw.githubusercontent.com/joerick/cibuildwheel/master/CI.md")
-    ''')
+        data = urlopen("https://raw.githubusercontent.com/pypa/cibuildwheel/master/CI.md", context=context)
+        data = urlopen("https://raw.githubusercontent.com/pypa/cibuildwheel/master/CI.md")
+        """
+    )
 )


 def test(tmp_path):
    # this test checks that SSL is working in the build environment using
    # some checks in setup.py.
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_ssl_tests.generate(project_dir)

    actual_wheels = utils.cibuildwheel_run(project_dir)

-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)
@@ -8,11 +8,13 @@ from .test_projects.c import SPAM_C_TEMPLATE

 subdir_package_project = TestProject()

-subdir_package_project.files['src/spam/spam.c'] = jinja2.Template(SPAM_C_TEMPLATE)
-subdir_package_project.template_context['spam_c_top_level_add'] = ''
-subdir_package_project.template_context['spam_c_function_add'] = ''
+subdir_package_project.files["src/spam/spam.c"] = jinja2.Template(SPAM_C_TEMPLATE)
+subdir_package_project.template_context["spam_c_top_level_add"] = ""
+subdir_package_project.template_context["spam_c_function_add"] = ""

-subdir_package_project.files['src/spam/setup.py'] = r'''
+subdir_package_project.files[
+    "src/spam/setup.py"
+] = r"""
 from setuptools import Extension, setup

 setup(
@@ -20,33 +22,40 @@ setup(
    ext_modules=[Extension('spam', sources=['spam.c'])],
    version="0.1.0",
 )
-'''
+"""

-subdir_package_project.files['src/spam/test/run_tests.py'] = r'''
+subdir_package_project.files[
+    "src/spam/test/run_tests.py"
+] = r"""
 print('run_tests.py executed!')
-'''
+"""

-subdir_package_project.files['bin/before_build.py'] = r'''
+subdir_package_project.files[
+    "bin/before_build.py"
+] = r"""
 print('before_build.py executed!')
-'''
+"""


 def test(capfd, tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    subdir_package_project.generate(project_dir)

-    package_dir = Path('src', 'spam')
+    package_dir = Path("src", "spam")
    # build the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, package_dir=package_dir, add_env={
-        'CIBW_BEFORE_BUILD': 'python {project}/bin/before_build.py',
-        'CIBW_TEST_COMMAND': 'python {package}/test/run_tests.py',
-        # this shouldn't depend on the version of python, so build only CPython 3.6
-        'CIBW_BUILD': 'cp36-*',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        package_dir=package_dir,
+        add_env={
+            "CIBW_BEFORE_BUILD": "python {project}/bin/before_build.py",
+            "CIBW_TEST_COMMAND": "python {package}/test/run_tests.py",
+            # this shouldn't depend on the version of python, so build only CPython 3.6
+            "CIBW_BUILD": "cp36-*",
+        },
+    )

    # check that the expected wheels are produced
-    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0')
-                       if 'cp36' in w]
+    expected_wheels = [w for w in utils.expected_wheels("spam", "0.1.0") if "cp36" in w]
    assert set(actual_wheels) == set(expected_wheels)

    captured = capfd.readouterr()
@@ -7,13 +7,17 @@ import pytest
 from . import test_projects, utils

 project_with_a_test = test_projects.new_c_project(
-    setup_cfg_add=textwrap.dedent(r'''
+    setup_cfg_add=textwrap.dedent(
+        r"""
        [options.extras_require]
        test = nose
-    ''')
+        """
+    )
 )

-project_with_a_test.files['test/spam_test.py'] = r'''
+project_with_a_test.files[
+    "test/spam_test.py"
+] = r'''
 import os
 import platform
 import sys
@@ -71,65 +75,77 @@ class TestSpam(TestCase):


 def test(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_a_test.generate(project_dir)

    # build and test the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_TEST_REQUIRES': 'nose',
-        # the 'false ||' bit is to ensure this command runs in a shell on
-        # mac/linux.
-        'CIBW_TEST_COMMAND': 'false || nosetests {project}/test',
-        'CIBW_TEST_COMMAND_WINDOWS': 'COLOR 00 || nosetests {project}/test',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_TEST_REQUIRES": "nose",
+            # the 'false ||' bit is to ensure this command runs in a shell on
+            # mac/linux.
+            "CIBW_TEST_COMMAND": "false || nosetests {project}/test",
+            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || nosetests {project}/test",
+        },
+    )

    # also check that we got the right wheels
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)


 def test_extras_require(tmp_path):
-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_a_test.generate(project_dir)

    # build and test the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_TEST_EXTRAS': 'test',
-        # the 'false ||' bit is to ensure this command runs in a shell on
-        # mac/linux.
-        'CIBW_TEST_COMMAND': 'false || nosetests {project}/test',
-        'CIBW_TEST_COMMAND_WINDOWS': 'COLOR 00 || nosetests {project}/test',
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir,
+        add_env={
+            "CIBW_TEST_EXTRAS": "test",
+            # the 'false ||' bit is to ensure this command runs in a shell on
+            # mac/linux.
+            "CIBW_TEST_COMMAND": "false || nosetests {project}/test",
+            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || nosetests {project}/test",
+        },
+    )

    # also check that we got the right wheels
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)


 project_with_a_failing_test = test_projects.new_c_project()
-project_with_a_failing_test.files['test/spam_test.py'] = r'''
+project_with_a_failing_test.files[
+    "test/spam_test.py"
+] = r"""
 from unittest import TestCase

 class TestSpam(TestCase):
    def test_something(self):
        self.fail('this test is supposed to fail')
-'''
+"""


 def test_failing_test(tmp_path):
    """Ensure a failing test causes cibuildwheel to error out and exit"""
-    project_dir = tmp_path / 'project'
-    output_dir = tmp_path / 'output'
+    project_dir = tmp_path / "project"
+    output_dir = tmp_path / "output"
    project_with_a_failing_test.generate(project_dir)

    with pytest.raises(subprocess.CalledProcessError):
-        utils.cibuildwheel_run(project_dir, output_dir=output_dir, add_env={
-            'CIBW_TEST_REQUIRES': 'nose',
-            'CIBW_TEST_COMMAND': 'nosetests {project}/test',
-            # manylinux1 has a version of bash that's been shown to have
-            # problems with this, so let's check that.
-            'CIBW_MANYLINUX_I686_IMAGE': 'manylinux1',
-            'CIBW_MANYLINUX_X86_64_IMAGE': 'manylinux1',
-        })
+        utils.cibuildwheel_run(
+            project_dir,
+            output_dir=output_dir,
+            add_env={
+                "CIBW_TEST_REQUIRES": "nose",
+                "CIBW_TEST_COMMAND": "nosetests {project}/test",
+                # manylinux1 has a version of bash that's been shown to have
+                # problems with this, so let's check that.
+                "CIBW_MANYLINUX_I686_IMAGE": "manylinux1",
+                "CIBW_MANYLINUX_X86_64_IMAGE": "manylinux1",
+            },
+        )

    assert len(os.listdir(output_dir)) == 0
@@ -7,24 +7,26 @@ from .test_projects import TestProject

 so_file_project = TestProject()

-so_file_project.files['libnothing.so'] = ''
+so_file_project.files["libnothing.so"] = ""

-so_file_project.files['setup.py'] = '''
+so_file_project.files[
+    "setup.py"
+] = """
 raise Exception('this build will fail')
-'''
+"""


 def test_failed_project_with_so_files(tmp_path, capfd):
-    if utils.platform != 'linux':
-        pytest.skip('this test is only relevant to the linux build')
+    if utils.platform != "linux":
+        pytest.skip("this test is only relevant to the linux build")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    so_file_project.generate(project_dir)

    with pytest.raises(subprocess.CalledProcessError):
        utils.cibuildwheel_run(project_dir)

    captured = capfd.readouterr()
-    print('out', captured.out)
-    print('err', captured.err)
+    print("out", captured.out)
+    print("err", captured.err)
    assert "NOTE: Shared object (.so) files found in this project." in captured.err
@@ -5,26 +5,28 @@ import pytest
 from . import test_projects, utils

 project_with_unicode = test_projects.new_c_project(
-    spam_c_function_add=textwrap.dedent(r'''
+    spam_c_function_add=textwrap.dedent(
+        r"""
        {
            Py_XDECREF(PyUnicode_FromStringAndSize("foo", 4));
        }
-    '''),
+        """
+    ),
 )


 def test(tmp_path):
-    if utils.platform != 'linux':
-        pytest.skip('the docker test is only relevant to the linux build')
+    if utils.platform != "linux":
+        pytest.skip("the docker test is only relevant to the linux build")

-    project_dir = tmp_path / 'project'
+    project_dir = tmp_path / "project"
    project_with_unicode.generate(project_dir)

    # build the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
-        'CIBW_TEST_COMMAND': 'python -c "import spam"'
-    })
+    actual_wheels = utils.cibuildwheel_run(
+        project_dir, add_env={"CIBW_TEST_COMMAND": 'python -c "import spam"'}
+    )

    # check that the expected wheels are produced
-    expected_wheels = utils.expected_wheels('spam', '0.1.0')
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
    assert set(actual_wheels) == set(expected_wheels)
@@ -1,8 +1,8 @@
-'''
+"""
 Utility functions used by the cibuildwheel tests.

 This file is added to the PYTHONPATH in the test runner at bin/run_test.py.
-'''
+"""

 import os
 import platform as pm
@@ -12,7 +12,18 @@ import sys
 from contextlib import contextmanager
 from tempfile import mkdtemp

-IS_WINDOWS_RUNNING_ON_TRAVIS = os.environ.get('TRAVIS_OS_NAME') == 'windows'
+platform: str
+
+if "CIBW_PLATFORM" in os.environ:
+    platform = os.environ["CIBW_PLATFORM"]
+elif sys.platform.startswith("linux"):
+    platform = "linux"
+elif sys.platform.startswith("darwin"):
+    platform = "macos"
+elif sys.platform in ["win32", "cygwin"]:
+    platform = "windows"
+else:
+    raise Exception("Unsupported platform")


 # Python 2 does not have a tempfile.TemporaryDirectory context manager
@@ -27,23 +38,23 @@ def TemporaryDirectoryIfNone(path):


 def cibuildwheel_get_build_identifiers(project_path, env=None):
-    '''
+    """
    Returns the list of build identifiers that cibuildwheel will try to build
    for the current platform.
-    '''
+    """
    cmd_output = subprocess.run(
-        [sys.executable, '-m', 'cibuildwheel', '--print-build-identifiers', str(project_path)],
+        [sys.executable, "-m", "cibuildwheel", "--print-build-identifiers", str(project_path)],
        universal_newlines=True,
        env=env,
        check=True,
        stdout=subprocess.PIPE,
    ).stdout

-    return cmd_output.strip().split('\n')
+    return cmd_output.strip().split("\n")


-def cibuildwheel_run(project_path, package_dir='.', env=None, add_env=None, output_dir=None):
-    '''
+def cibuildwheel_run(project_path, package_dir=".", env=None, add_env=None, output_dir=None):
+    """
    Runs cibuildwheel as a subprocess, building the project at project_path.

    Uses the current Python interpreter.
@@ -56,18 +67,25 @@ def cibuildwheel_run(project_path, package_dir='.', env=None, add_env=None, outp
    :param output_dir: directory where wheels are saved. If None, a temporary
    directory will be used for the duration of the command.
    :return: list of built wheels (file names).
-    '''
+    """
    if env is None:
        env = os.environ.copy()
        # If present in the host environment, remove the MACOSX_DEPLOYMENT_TARGET for consistency
-        env.pop('MACOSX_DEPLOYMENT_TARGET', None)
+        env.pop("MACOSX_DEPLOYMENT_TARGET", None)

    if add_env is not None:
        env.update(add_env)

    with TemporaryDirectoryIfNone(output_dir) as _output_dir:
        subprocess.run(
-            [sys.executable, '-m', 'cibuildwheel', '--output-dir', str(_output_dir), str(package_dir)],
+            [
+                sys.executable,
+                "-m",
+                "cibuildwheel",
+                "--output-dir",
+                str(_output_dir),
+                str(package_dir),
+            ],
            env=env,
            cwd=project_path,
            check=True,
@@ -77,24 +95,30 @@ def cibuildwheel_run(project_path, package_dir='.', env=None, add_env=None, outp


 def _get_arm64_macosx_deployment_target(macosx_deployment_target: str) -> str:
-    '''
+    """
    The first version of macOS that supports arm is 11.0. So the wheel tag
    cannot contain an earlier deployment target, even if
    MACOSX_DEPLOYMENT_TARGET sets it.
-    '''
-    version_tuple = tuple(map(int, macosx_deployment_target.split('.')))
+    """
+    version_tuple = tuple(map(int, macosx_deployment_target.split(".")))
    if version_tuple <= (11, 0):
-        return '11.0'
+        return "11.0"
    else:
        return macosx_deployment_target


-def expected_wheels(package_name, package_version, manylinux_versions=None,
-                    macosx_deployment_target='10.9', machine_arch=None, *,
-                    exclude_27=IS_WINDOWS_RUNNING_ON_TRAVIS):
-    '''
+def expected_wheels(
+    package_name,
+    package_version,
+    manylinux_versions=None,
+    macosx_deployment_target="10.9",
+    machine_arch=None,
+    *,
+    exclude_27=platform == "windows",
+):
+    """
    Returns a list of expected wheels from a run of cibuildwheel.
-    '''
+    """
    # per PEP 425 (https://www.python.org/dev/peps/pep-0425/), wheel files shall have name of the form
    # {distribution}-{version}(-{build tag})?-{python tag}-{abi tag}-{platform tag}.whl
    # {python tag} and {abi tag} are closely related to the python interpreter used to build the wheel
@@ -104,56 +128,58 @@ def expected_wheels(package_name, package_version, manylinux_versions=None,
        machine_arch = pm.machine()

    if manylinux_versions is None:
-        if machine_arch == 'x86_64':
-            manylinux_versions = ['manylinux1', 'manylinux2010']
+        if machine_arch == "x86_64":
+            manylinux_versions = ["manylinux1", "manylinux2010"]
        else:
-            manylinux_versions = ['manylinux2014']
+            manylinux_versions = ["manylinux2014"]

-    python_abi_tags = ['cp35-cp35m', 'cp36-cp36m', 'cp37-cp37m', 'cp38-cp38', 'cp39-cp39']
+    python_abi_tags = ["cp35-cp35m", "cp36-cp36m", "cp37-cp37m", "cp38-cp38", "cp39-cp39"]

-    if machine_arch in ['x86_64', 'AMD64', 'x86']:
-        python_abi_tags += ['cp27-cp27m', 'pp27-pypy_73', 'pp36-pypy36_pp73', 'pp37-pypy37_pp73']
+    if machine_arch in ["x86_64", "AMD64", "x86"]:
+        python_abi_tags += ["cp27-cp27m", "pp27-pypy_73", "pp36-pypy36_pp73", "pp37-pypy37_pp73"]

-        if platform == 'linux':
-            python_abi_tags.append('cp27-cp27mu')  # python 2.7 has 2 different ABI on manylinux
+        if platform == "linux":
+            python_abi_tags.append("cp27-cp27mu")  # python 2.7 has 2 different ABI on manylinux

-    if platform == 'macos' and get_macos_version() >= (10, 16):
+    if platform == "macos" and get_macos_version() >= (10, 16):
        # 10.16 is sometimes reported as the macOS version on macOS 11.
        # CPython 3.5 doesn't work on macOS 11.
-        python_abi_tags.remove('cp35-cp35m')
+        python_abi_tags.remove("cp35-cp35m")
        # pypy not supported on macOS 11.
-        python_abi_tags = [t for t in python_abi_tags if not t.startswith('pp')]
+        python_abi_tags = [t for t in python_abi_tags if not t.startswith("pp")]

-    if platform == 'macos' and machine_arch == 'arm64':
+    if platform == "macos" and machine_arch == "arm64":
        # currently, arm64 macs are only supported by cp39
-        python_abi_tags = ['cp39-cp39']
+        python_abi_tags = ["cp39-cp39"]

    wheels = []

    for python_abi_tag in python_abi_tags:
        platform_tags = []

-        if platform == 'linux':
+        if platform == "linux":
            architectures = [machine_arch]

-            if machine_arch == 'x86_64' and python_abi_tag.startswith('cp'):
-                architectures.append('i686')
+            if machine_arch == "x86_64" and python_abi_tag.startswith("cp"):
+                architectures.append("i686")

            platform_tags = [
-                f'{manylinux_version}_{architecture}'
+                f"{manylinux_version}_{architecture}"
                for architecture in architectures
                for manylinux_version in manylinux_versions
            ]

-        elif platform == 'windows':
-            if python_abi_tag.startswith('cp'):
-                platform_tags = ['win32', 'win_amd64']
+        elif platform == "windows":
+            if python_abi_tag.startswith("cp"):
+                platform_tags = ["win32", "win_amd64"]
            else:
-                platform_tags = ['win32']
+                platform_tags = ["win32"]

-        elif platform == 'macos':
-            if python_abi_tag == 'cp39-cp39' and machine_arch == 'arm64':
-                arm64_macosx_deployment_target = _get_arm64_macosx_deployment_target(macosx_deployment_target)
+        elif platform == "macos":
+            if python_abi_tag == "cp39-cp39" and machine_arch == "arm64":
+                arm64_macosx_deployment_target = _get_arm64_macosx_deployment_target(
+                    macosx_deployment_target
+                )
                platform_tags = [
                    f'macosx_{macosx_deployment_target.replace(".", "_")}_universal2',
                    f'macosx_{arm64_macosx_deployment_target.replace(".", "_")}_arm64',
@@ -164,40 +190,26 @@ def expected_wheels(package_name, package_version, manylinux_versions=None,
                ]

        else:
-            raise Exception('unsupported platform')
+            raise Exception("unsupported platform")

        for platform_tag in platform_tags:
-            wheels.append(f'{package_name}-{package_version}-{python_abi_tag}-{platform_tag}.whl')
+            wheels.append(f"{package_name}-{package_version}-{python_abi_tag}-{platform_tag}.whl")

    # Travis on Windows does not support using the default Python 2.7 compiler,
    # so we support skipping here.
    if exclude_27:
-        wheels = [w for w in wheels if '-cp27-' not in w and '-pp2' not in w]
+        wheels = [w for w in wheels if "-cp27-" not in w and "-pp2" not in w]

    return wheels


 def get_macos_version():
-    '''
+    """
    Returns the macOS major/minor version, as a tuple, e.g. (10, 15) or (11, 0)

    These tuples can be used in comparisons, e.g.
        (10, 14) <= (11, 0) == True
        (11, 2) <= (11, 0) != True
-    '''
+    """
    version_str, _, _ = pm.mac_ver()
    return tuple(map(int, version_str.split(".")[:2]))
-
-
-platform = None
-
-if 'CIBW_PLATFORM' in os.environ:
-    platform = os.environ['CIBW_PLATFORM']
-elif sys.platform.startswith('linux'):
-    platform = 'linux'
-elif sys.platform.startswith('darwin'):
-    platform = 'macos'
-elif sys.platform in ['win32', 'cygwin']:
-    platform = 'windows'
-else:
-    raise Exception('Unsupported platform')
@@ -6,101 +6,113 @@ from cibuildwheel.util import BuildSelector
 def test_build():
    build_selector = BuildSelector(build_config="cp3?-* *-manylinux1*", skip_config="")

-    assert build_selector('cp27-manylinux1_x86_64')
-    assert build_selector('cp36-manylinux1_x86_64')
-    assert build_selector('cp37-manylinux1_x86_64')
-    assert build_selector('cp27-manylinux1_i686')
-    assert build_selector('cp36-manylinux1_i686')
-    assert build_selector('cp37-manylinux1_i686')
-    assert not build_selector('cp27-macosx_10_6_intel')
-    assert build_selector('cp36-macosx_10_6_intel')
-    assert build_selector('cp37-macosx_10_6_intel')
-    assert not build_selector('cp27-win32')
-    assert build_selector('cp36-win32')
-    assert build_selector('cp37-win32')
-    assert not build_selector('cp27-win_amd64')
-    assert build_selector('cp36-win_amd64')
-    assert build_selector('cp37-win_amd64')
+    assert build_selector("cp27-manylinux1_x86_64")
+    assert build_selector("cp36-manylinux1_x86_64")
+    assert build_selector("cp37-manylinux1_x86_64")
+    assert build_selector("cp27-manylinux1_i686")
+    assert build_selector("cp36-manylinux1_i686")
+    assert build_selector("cp37-manylinux1_i686")
+    assert not build_selector("cp27-macosx_10_6_intel")
+    assert build_selector("cp36-macosx_10_6_intel")
+    assert build_selector("cp37-macosx_10_6_intel")
+    assert not build_selector("cp27-win32")
+    assert build_selector("cp36-win32")
+    assert build_selector("cp37-win32")
+    assert not build_selector("cp27-win_amd64")
+    assert build_selector("cp36-win_amd64")
+    assert build_selector("cp37-win_amd64")


 def test_skip():
-    build_selector = BuildSelector(build_config="*", skip_config="cp27-* cp3?-manylinux1_i686 cp36-win* *-win32")
+    build_selector = BuildSelector(
+        build_config="*", skip_config="cp27-* cp3?-manylinux1_i686 cp36-win* *-win32"
+    )

-    assert not build_selector('cp27-manylinux1_x86_64')
-    assert build_selector('cp36-manylinux1_x86_64')
-    assert build_selector('cp37-manylinux1_x86_64')
-    assert not build_selector('cp27-manylinux1_i686')
-    assert not build_selector('cp36-manylinux1_i686')
-    assert not build_selector('cp37-manylinux1_i686')
-    assert not build_selector('cp27-macosx_10_6_intel')
-    assert build_selector('cp36-macosx_10_6_intel')
-    assert build_selector('cp37-macosx_10_6_intel')
-    assert not build_selector('cp27-win32')
-    assert not build_selector('cp36-win32')
-    assert not build_selector('cp37-win32')
-    assert not build_selector('cp27-win_amd64')
-    assert not build_selector('cp36-win_amd64')
-    assert build_selector('cp37-win_amd64')
+    assert not build_selector("cp27-manylinux1_x86_64")
+    assert build_selector("cp36-manylinux1_x86_64")
+    assert build_selector("cp37-manylinux1_x86_64")
+    assert not build_selector("cp27-manylinux1_i686")
+    assert not build_selector("cp36-manylinux1_i686")
+    assert not build_selector("cp37-manylinux1_i686")
+    assert not build_selector("cp27-macosx_10_6_intel")
+    assert build_selector("cp36-macosx_10_6_intel")
+    assert build_selector("cp37-macosx_10_6_intel")
+    assert not build_selector("cp27-win32")
+    assert not build_selector("cp36-win32")
+    assert not build_selector("cp37-win32")
+    assert not build_selector("cp27-win_amd64")
+    assert not build_selector("cp36-win_amd64")
+    assert build_selector("cp37-win_amd64")


 def test_build_and_skip():
-    build_selector = BuildSelector(build_config="cp36-* cp37-macosx* *-manylinux1*", skip_config="cp27-* cp37-manylinux1_i686")
+    build_selector = BuildSelector(
+        build_config="cp36-* cp37-macosx* *-manylinux1*", skip_config="cp27-* cp37-manylinux1_i686"
+    )

-    assert not build_selector('cp27-manylinux1_x86_64')
-    assert build_selector('cp36-manylinux1_x86_64')
-    assert build_selector('cp37-manylinux1_x86_64')
-    assert not build_selector('cp27-manylinux1_i686')
-    assert build_selector('cp36-manylinux1_i686')
-    assert not build_selector('cp37-manylinux1_i686')
-    assert not build_selector('cp27-macosx_10_6_intel')
-    assert build_selector('cp36-macosx_10_6_intel')
-    assert build_selector('cp37-macosx_10_6_intel')
-    assert not build_selector('cp27-win32')
-    assert build_selector('cp36-win32')
-    assert not build_selector('cp37-win32')
-    assert not build_selector('cp27-win_amd64')
-    assert build_selector('cp36-win_amd64')
-    assert not build_selector('cp37-win_amd64')
+    assert not build_selector("cp27-manylinux1_x86_64")
+    assert build_selector("cp36-manylinux1_x86_64")
+    assert build_selector("cp37-manylinux1_x86_64")
+    assert not build_selector("cp27-manylinux1_i686")
+    assert build_selector("cp36-manylinux1_i686")
+    assert not build_selector("cp37-manylinux1_i686")
+    assert not build_selector("cp27-macosx_10_6_intel")
+    assert build_selector("cp36-macosx_10_6_intel")
+    assert build_selector("cp37-macosx_10_6_intel")
+    assert not build_selector("cp27-win32")
+    assert build_selector("cp36-win32")
+    assert not build_selector("cp37-win32")
+    assert not build_selector("cp27-win_amd64")
+    assert build_selector("cp36-win_amd64")
+    assert not build_selector("cp37-win_amd64")


 def test_build_braces():
    build_selector = BuildSelector(build_config="cp{36,37}*", skip_config="")

-    assert not build_selector('cp27-manylinux1_x86_64')
-    assert build_selector('cp36-manylinux1_x86_64')
-    assert build_selector('cp37-manylinux1_x86_64')
-    assert not build_selector('cp38-manylinux1_x86_64')
-    assert not build_selector('cp39-manylinux1_x86_64')
+    assert not build_selector("cp27-manylinux1_x86_64")
+    assert build_selector("cp36-manylinux1_x86_64")
+    assert build_selector("cp37-manylinux1_x86_64")
+    assert not build_selector("cp38-manylinux1_x86_64")
+    assert not build_selector("cp39-manylinux1_x86_64")


 def test_build_limited_python():
-    build_selector = BuildSelector(build_config="*", skip_config="", requires_python=SpecifierSet(">=3.6"))
+    build_selector = BuildSelector(
+        build_config="*", skip_config="", requires_python=SpecifierSet(">=3.6")
+    )

-    assert not build_selector('cp27-manylinux1_x86_64')
-    assert build_selector('cp36-manylinux1_x86_64')
-    assert build_selector('cp37-manylinux1_x86_64')
-    assert not build_selector('cp27-manylinux1_i686')
-    assert build_selector('cp36-manylinux1_i686')
-    assert build_selector('cp37-manylinux1_i686')
-    assert not build_selector('cp27-win32')
-    assert build_selector('cp36-win32')
-    assert build_selector('cp37-win32')
-    assert not build_selector('pp27-win32')
-    assert build_selector('pp36-win32')
-    assert build_selector('pp37-win32')
+    assert not build_selector("cp27-manylinux1_x86_64")
+    assert build_selector("cp36-manylinux1_x86_64")
+    assert build_selector("cp37-manylinux1_x86_64")
+    assert not build_selector("cp27-manylinux1_i686")
+    assert build_selector("cp36-manylinux1_i686")
+    assert build_selector("cp37-manylinux1_i686")
+    assert not build_selector("cp27-win32")
+    assert build_selector("cp36-win32")
+    assert build_selector("cp37-win32")
+    assert not build_selector("pp27-win32")
+    assert build_selector("pp36-win32")
+    assert build_selector("pp37-win32")


 def test_build_limited_python_partial():
-    build_selector = BuildSelector(build_config="*", skip_config="", requires_python=SpecifierSet(">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"))
+    build_selector = BuildSelector(
+        build_config="*",
+        skip_config="",
+        requires_python=SpecifierSet(">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"),
+    )

-    assert build_selector('cp27-manylinux1_x86_64')
-    assert not build_selector('cp35-manylinux1_x86_64')
-    assert build_selector('cp36-manylinux1_x86_64')
+    assert build_selector("cp27-manylinux1_x86_64")
+    assert not build_selector("cp35-manylinux1_x86_64")
+    assert build_selector("cp36-manylinux1_x86_64")


 def test_build_limited_python_patch():
-    build_selector = BuildSelector(build_config="*", skip_config="", requires_python=SpecifierSet(">=2.7.9"))
+    build_selector = BuildSelector(
+        build_config="*", skip_config="", requires_python=SpecifierSet(">=2.7.9")
+    )

-    assert build_selector('cp27-manylinux1_x86_64')
-    assert build_selector('cp36-manylinux1_x86_64')
-    assert build_selector('cp37-manylinux1_x86_64')
+    assert build_selector("cp27-manylinux1_x86_64")
+    assert build_selector("cp36-manylinux1_x86_64")
+    assert build_selector("cp37-manylinux1_x86_64")
@@ -2,9 +2,7 @@ import pytest


 def pytest_addoption(parser):
-    parser.addoption(
-        "--run-docker", action="store_true", default=False, help="run docker tests"
-    )
+    parser.addoption("--run-docker", action="store_true", default=False, help="run docker tests")


 def pytest_configure(config):
@@ -7,11 +7,21 @@ def test_defaults():
    dependency_constraints = DependencyConstraints.with_defaults()

    project_root = Path(__file__).parents[1]
-    resources_dir = project_root / 'cibuildwheel' / 'resources'
+    resources_dir = project_root / "cibuildwheel" / "resources"

-    assert dependency_constraints.base_file_path.samefile(resources_dir / 'constraints.txt')
-    assert dependency_constraints.get_for_python_version('3.99').samefile(resources_dir / 'constraints.txt')
-    assert dependency_constraints.get_for_python_version('3.9').samefile(resources_dir / 'constraints-python39.txt')
-    assert dependency_constraints.get_for_python_version('3.6').samefile(resources_dir / 'constraints-python36.txt')
-    assert dependency_constraints.get_for_python_version('3.5').samefile(resources_dir / 'constraints-python35.txt')
-    assert dependency_constraints.get_for_python_version('2.7').samefile(resources_dir / 'constraints-python27.txt')
+    assert dependency_constraints.base_file_path.samefile(resources_dir / "constraints.txt")
+    assert dependency_constraints.get_for_python_version("3.99").samefile(
+        resources_dir / "constraints.txt"
+    )
+    assert dependency_constraints.get_for_python_version("3.9").samefile(
+        resources_dir / "constraints-python39.txt"
+    )
+    assert dependency_constraints.get_for_python_version("3.6").samefile(
+        resources_dir / "constraints-python36.txt"
+    )
+    assert dependency_constraints.get_for_python_version("3.5").samefile(
+        resources_dir / "constraints-python35.txt"
+    )
+    assert dependency_constraints.get_for_python_version("2.7").samefile(
+        resources_dir / "constraints-python27.txt"
+    )
@@ -14,65 +14,85 @@ from cibuildwheel.environment import EnvironmentAssignment
 # multi architectures and include python3.8
 pm = platform.machine()
 if pm == "x86_64":
-    DEFAULT_IMAGE = 'quay.io/pypa/manylinux2014_x86_64:2020-05-17-2f8ac3b'
+    DEFAULT_IMAGE = "quay.io/pypa/manylinux2014_x86_64:2020-05-17-2f8ac3b"
 elif pm == "aarch64":
-    DEFAULT_IMAGE = 'quay.io/pypa/manylinux2014_aarch64:2020-05-17-2f8ac3b'
+    DEFAULT_IMAGE = "quay.io/pypa/manylinux2014_aarch64:2020-05-17-2f8ac3b"
 elif pm == "ppc64le":
-    DEFAULT_IMAGE = 'quay.io/pypa/manylinux2014_ppc64le:2020-05-17-2f8ac3b'
+    DEFAULT_IMAGE = "quay.io/pypa/manylinux2014_ppc64le:2020-05-17-2f8ac3b"
 elif pm == "s390x":
-    DEFAULT_IMAGE = 'quay.io/pypa/manylinux2014_s390x:2020-05-17-2f8ac3b'
+    DEFAULT_IMAGE = "quay.io/pypa/manylinux2014_s390x:2020-05-17-2f8ac3b"


@pytest.mark.docker
 def test_simple():
    with DockerContainer(DEFAULT_IMAGE) as container:
-        assert container.call(['echo', 'hello'], capture_output=True) == 'hello\n'
+        assert container.call(["echo", "hello"], capture_output=True) == "hello\n"


@pytest.mark.docker
 def test_no_lf():
    with DockerContainer(DEFAULT_IMAGE) as container:
-        assert container.call(['printf', 'hello'], capture_output=True) == 'hello'
+        assert container.call(["printf", "hello"], capture_output=True) == "hello"


@pytest.mark.docker
 def test_environment():
    with DockerContainer(DEFAULT_IMAGE) as container:
-        assert container.call(['sh', '-c', 'echo $TEST_VAR'], env={'TEST_VAR': '1'}, capture_output=True) == '1\n'
+        assert (
+            container.call(
+                ["sh", "-c", "echo $TEST_VAR"], env={"TEST_VAR": "1"}, capture_output=True
+            )
+            == "1\n"
+        )


@pytest.mark.docker
 def test_cwd():
-    with DockerContainer(DEFAULT_IMAGE, cwd='/cibuildwheel/working_directory') as container:
-        assert container.call(['pwd'], capture_output=True) == '/cibuildwheel/working_directory\n'
-        assert container.call(['pwd'], capture_output=True, cwd='/opt') == '/opt\n'
+    with DockerContainer(DEFAULT_IMAGE, cwd="/cibuildwheel/working_directory") as container:
+        assert container.call(["pwd"], capture_output=True) == "/cibuildwheel/working_directory\n"
+        assert container.call(["pwd"], capture_output=True, cwd="/opt") == "/opt\n"


@pytest.mark.docker
 def test_container_removed():
    with DockerContainer(DEFAULT_IMAGE) as container:
-        docker_containers_listing = subprocess.run('docker container ls', shell=True, check=True, stdout=subprocess.PIPE, universal_newlines=True).stdout
+        docker_containers_listing = subprocess.run(
+            "docker container ls",
+            shell=True,
+            check=True,
+            stdout=subprocess.PIPE,
+            universal_newlines=True,
+        ).stdout
        assert container.name in docker_containers_listing
        old_container_name = container.name

-    docker_containers_listing = subprocess.run('docker container ls', shell=True, check=True, stdout=subprocess.PIPE, universal_newlines=True).stdout
+    docker_containers_listing = subprocess.run(
+        "docker container ls",
+        shell=True,
+        check=True,
+        stdout=subprocess.PIPE,
+        universal_newlines=True,
+    ).stdout
    assert old_container_name not in docker_containers_listing


@pytest.mark.docker
 def test_large_environment():
    # max environment variable size is 128kB
-    long_env_var_length = 127*1024
+    long_env_var_length = 127 * 1024
    large_environment = {
-        'a': '0'*long_env_var_length,
-        'b': '0'*long_env_var_length,
-        'c': '0'*long_env_var_length,
-        'd': '0'*long_env_var_length,
+        "a": "0" * long_env_var_length,
+        "b": "0" * long_env_var_length,
+        "c": "0" * long_env_var_length,
+        "d": "0" * long_env_var_length,
    }

    with DockerContainer(DEFAULT_IMAGE) as container:
        # check the length of d
-        assert container.call(['sh', '-c', 'echo ${#d}'], env=large_environment, capture_output=True) == f'{long_env_var_length}\n'
+        assert (
+            container.call(["sh", "-c", "echo ${#d}"], env=large_environment, capture_output=True)
+            == f"{long_env_var_length}\n"
+        )


@pytest.mark.docker
@@ -81,29 +101,46 @@ def test_binary_output():
        # note: the below embedded snippets are in python2

        # check that we can pass though arbitrary binary data without erroring
-        container.call(['/usr/bin/python2', '-c', textwrap.dedent('''
-            import sys
-            sys.stdout.write(''.join(chr(n) for n in range(0, 256)))
-        ''')])
+        container.call(
+            [
+                "/usr/bin/python2",
+                "-c",
+                textwrap.dedent(
+                    """
+                    import sys
+                    sys.stdout.write(''.join(chr(n) for n in range(0, 256)))
+                    """
+                ),
+            ]
+        )

        # check that we can capture arbitrary binary data
-        output = container.call(['/usr/bin/python2', '-c', textwrap.dedent('''
-            import sys
-            sys.stdout.write(''.join(chr(n % 256) for n in range(0, 512)))
-        ''')], capture_output=True)
+        output = container.call(
+            [
+                "/usr/bin/python2",
+                "-c",
+                textwrap.dedent(
+                    """
+                    import sys
+                    sys.stdout.write(''.join(chr(n % 256) for n in range(0, 512)))
+                    """
+                ),
+            ],
+            capture_output=True,
+        )

-        data = bytes(output, encoding='utf8', errors='surrogateescape')
+        data = bytes(output, encoding="utf8", errors="surrogateescape")

-        for i in range(0, 512):
+        for i in range(512):
            assert data[i] == i % 256

        # check that environment variables can carry binary data, except null characters
        # (https://www.gnu.org/software/libc/manual/html_node/Environment-Variables.html)
        binary_data = bytes(n for n in range(1, 256))
-        binary_data_string = str(binary_data, encoding='utf8', errors='surrogateescape')
+        binary_data_string = str(binary_data, encoding="utf8", errors="surrogateescape")
        output = container.call(
-            ['python2', '-c', 'import os, sys; sys.stdout.write(os.environ["TEST_VAR"])'],
-            env={'TEST_VAR': binary_data_string},
+            ["python2", "-c", 'import os, sys; sys.stdout.write(os.environ["TEST_VAR"])'],
+            env={"TEST_VAR": binary_data_string},
            capture_output=True,
        )
        assert output == binary_data_string
@@ -114,45 +151,45 @@ def test_file_operations(tmp_path: Path):
    with DockerContainer(DEFAULT_IMAGE) as container:
        # test copying a file in
        test_binary_data = bytes(random.randrange(256) for _ in range(1000))
-        original_test_file = tmp_path / 'test.dat'
+        original_test_file = tmp_path / "test.dat"
        original_test_file.write_bytes(test_binary_data)

-        dst_file = PurePath('/tmp/test.dat')
+        dst_file = PurePath("/tmp/test.dat")

        container.copy_into(original_test_file, dst_file)

-        output = container.call(['cat', dst_file], capture_output=True)
-        assert test_binary_data == bytes(output, encoding='utf8', errors='surrogateescape')
+        output = container.call(["cat", dst_file], capture_output=True)
+        assert test_binary_data == bytes(output, encoding="utf8", errors="surrogateescape")


@pytest.mark.docker
 def test_dir_operations(tmp_path: Path):
    with DockerContainer(DEFAULT_IMAGE) as container:
        test_binary_data = bytes(random.randrange(256) for _ in range(1000))
-        original_test_file = tmp_path / 'test.dat'
+        original_test_file = tmp_path / "test.dat"
        original_test_file.write_bytes(test_binary_data)

        # test copying a dir in
-        test_dir = tmp_path / 'test_dir'
+        test_dir = tmp_path / "test_dir"
        test_dir.mkdir()
-        test_file = test_dir / 'test.dat'
+        test_file = test_dir / "test.dat"
        shutil.copyfile(original_test_file, test_file)

-        dst_dir = PurePath('/tmp/test_dir')
-        dst_file = dst_dir / 'test.dat'
+        dst_dir = PurePath("/tmp/test_dir")
+        dst_file = dst_dir / "test.dat"
        container.copy_into(test_dir, dst_dir)

-        output = container.call(['cat', dst_file], capture_output=True)
-        assert test_binary_data == bytes(output, encoding='utf8', errors='surrogateescape')
+        output = container.call(["cat", dst_file], capture_output=True)
+        assert test_binary_data == bytes(output, encoding="utf8", errors="surrogateescape")

        # test glob
-        assert container.glob(dst_dir, '*.dat') == [dst_file]
+        assert container.glob(dst_dir, "*.dat") == [dst_file]

        # test copy dir out
-        new_test_dir = tmp_path / 'test_dir_new'
+        new_test_dir = tmp_path / "test_dir_new"
        container.copy_out(dst_dir, new_test_dir)

-        assert test_binary_data == (new_test_dir / 'test.dat').read_bytes()
+        assert test_binary_data == (new_test_dir / "test.dat").read_bytes()


@pytest.mark.docker
@@ -5,27 +5,27 @@ import pytest

 from cibuildwheel.util import download

-DOWNLOAD_URL = 'https://raw.githubusercontent.com/joerick/cibuildwheel/v1.6.3/requirements-dev.txt'
+DOWNLOAD_URL = "https://raw.githubusercontent.com/pypa/cibuildwheel/v1.6.3/requirements-dev.txt"


 def test_download(monkeypatch, tmp_path):
-    monkeypatch.delenv('SSL_CERT_FILE', raising=False)
-    dest = tmp_path / 'file.txt'
+    monkeypatch.delenv("SSL_CERT_FILE", raising=False)
+    dest = tmp_path / "file.txt"
    download(DOWNLOAD_URL, dest)
    assert len(dest.read_bytes()) == 134


 def test_download_good_ssl_cert_file(monkeypatch, tmp_path):
-    monkeypatch.setenv('SSL_CERT_FILE', certifi.where())
-    dest = tmp_path / 'file.txt'
+    monkeypatch.setenv("SSL_CERT_FILE", certifi.where())
+    dest = tmp_path / "file.txt"
    download(DOWNLOAD_URL, dest)
    assert len(dest.read_bytes()) == 134


 def test_download_bad_ssl_cert_file(monkeypatch, tmp_path):
-    bad_cafile = tmp_path / 'ca.pem'
-    bad_cafile.write_text('bad certificates')
-    monkeypatch.setenv('SSL_CERT_FILE', str(bad_cafile))
-    dest = tmp_path / 'file.txt'
+    bad_cafile = tmp_path / "ca.pem"
+    bad_cafile.write_text("bad certificates")
+    monkeypatch.setenv("SSL_CERT_FILE", str(bad_cafile))
+    dest = tmp_path / "file.txt"
    with pytest.raises(ssl.SSLError):
        download(DOWNLOAD_URL, dest)
@@ -4,82 +4,70 @@ from cibuildwheel.environment import parse_environment


 def test_basic_parsing():
-    environment_recipe = parse_environment('VAR=1 VBR=2')
+    environment_recipe = parse_environment("VAR=1 VBR=2")

-    environment_dict = environment_recipe.as_dictionary(
-        prev_environment={}
-    )
+    environment_dict = environment_recipe.as_dictionary(prev_environment={})
    environment_cmds = environment_recipe.as_shell_commands()

-    assert environment_dict == {'VAR': '1', 'VBR': '2'}
-    assert environment_cmds == ['export VAR=1', 'export VBR=2']
+    assert environment_dict == {"VAR": "1", "VBR": "2"}
+    assert environment_cmds == ["export VAR=1", "export VBR=2"]


 def test_quotes():
-    environment_recipe = parse_environment('A=1 VAR="1 NOT_A_VAR=2" VBR=\'vbr\'')
+    environment_recipe = parse_environment("A=1 VAR=\"1 NOT_A_VAR=2\" VBR='vbr'")

-    environment_dict = environment_recipe.as_dictionary(
-        prev_environment={}
-    )
+    environment_dict = environment_recipe.as_dictionary(prev_environment={})
    environment_cmds = environment_recipe.as_shell_commands()

-    assert environment_dict == {'A': '1', 'VAR': '1 NOT_A_VAR=2', 'VBR': 'vbr'}
-    assert environment_cmds == ['export A=1', 'export VAR="1 NOT_A_VAR=2"', 'export VBR=\'vbr\'']
+    assert environment_dict == {"A": "1", "VAR": "1 NOT_A_VAR=2", "VBR": "vbr"}
+    assert environment_cmds == ["export A=1", 'export VAR="1 NOT_A_VAR=2"', "export VBR='vbr'"]


 def test_inheritance():
-    environment_recipe = parse_environment('PATH=$PATH:/usr/local/bin')
+    environment_recipe = parse_environment("PATH=$PATH:/usr/local/bin")

-    environment_dict = environment_recipe.as_dictionary(
-        prev_environment={'PATH': '/usr/bin'}
-    )
+    environment_dict = environment_recipe.as_dictionary(prev_environment={"PATH": "/usr/bin"})
    environment_cmds = environment_recipe.as_shell_commands()

-    assert environment_dict == {'PATH': '/usr/bin:/usr/local/bin'}
-    assert environment_cmds == ['export PATH=$PATH:/usr/local/bin']
+    assert environment_dict == {"PATH": "/usr/bin:/usr/local/bin"}
+    assert environment_cmds == ["export PATH=$PATH:/usr/local/bin"]


 def test_shell_eval():
    environment_recipe = parse_environment('VAR="$(echo "a   test" string)"')

    env_copy = os.environ.copy()
-    env_copy.pop('VAR', None)
+    env_copy.pop("VAR", None)

-    environment_dict = environment_recipe.as_dictionary(
-        prev_environment=env_copy
-    )
+    environment_dict = environment_recipe.as_dictionary(prev_environment=env_copy)
    environment_cmds = environment_recipe.as_shell_commands()

-    assert environment_dict['VAR'] == 'a   test string'
+    assert environment_dict["VAR"] == "a   test string"
    assert environment_cmds == ['export VAR="$(echo "a   test" string)"']


 def test_shell_eval_and_env():
    environment_recipe = parse_environment('VAR="$(echo "$PREV_VAR" string)"')

-    environment_dict = environment_recipe.as_dictionary(
-        prev_environment={'PREV_VAR': '1 2 3'}
-    )
+    environment_dict = environment_recipe.as_dictionary(prev_environment={"PREV_VAR": "1 2 3"})
    environment_cmds = environment_recipe.as_shell_commands()

-    assert environment_dict == {'PREV_VAR': '1 2 3', 'VAR': '1 2 3 string'}
+    assert environment_dict == {"PREV_VAR": "1 2 3", "VAR": "1 2 3 string"}
    assert environment_cmds == ['export VAR="$(echo "$PREV_VAR" string)"']


 def test_empty_var():
-    environment_recipe = parse_environment('CFLAGS=')
+    environment_recipe = parse_environment("CFLAGS=")

-    environment_dict = environment_recipe.as_dictionary(
-        prev_environment={'CFLAGS': '-Wall'}
-    )
+    environment_dict = environment_recipe.as_dictionary(prev_environment={"CFLAGS": "-Wall"})
    environment_cmds = environment_recipe.as_shell_commands()

-    assert environment_dict == {'CFLAGS': ''}
-    assert environment_cmds == ['export CFLAGS=']
+    assert environment_dict == {"CFLAGS": ""}
+    assert environment_cmds == ["export CFLAGS="]


 def test_no_vars():
-    environment_recipe = parse_environment('')
+    environment_recipe = parse_environment("")

    environment_dict = environment_recipe.as_dictionary(prev_environment={})
    environment_cmds = environment_recipe.as_shell_commands()
@@ -89,11 +77,13 @@ def test_no_vars():


 def test_no_vars_pass_through():
-    environment_recipe = parse_environment('')
+    environment_recipe = parse_environment("")

-    environment_dict = environment_recipe.as_dictionary(prev_environment={'CIBUILDWHEEL': 'awesome'})
+    environment_dict = environment_recipe.as_dictionary(
+        prev_environment={"CIBUILDWHEEL": "awesome"}
+    )

-    assert environment_dict == {'CIBUILDWHEEL': 'awesome'}
+    assert environment_dict == {"CIBUILDWHEEL": "awesome"}


 def test_operators_inside_eval():
@@ -102,24 +92,24 @@ def test_operators_inside_eval():
    # pass the existing process env so PATH is available
    environment_dict = environment_recipe.as_dictionary(os.environ.copy())

-    assert environment_dict.get('SOMETHING') == 'a\nb\nc'
+    assert environment_dict.get("SOMETHING") == "a\nb\nc"


 def test_substitution_with_backslash():
    environment_recipe = parse_environment('PATH2="somewhere_else;$PATH1"')

    # pass the existing process env so PATH is available
-    environment_dict = environment_recipe.as_dictionary(prev_environment={
-        'PATH1': 'c:\\folder\\'
-    })
+    environment_dict = environment_recipe.as_dictionary(prev_environment={"PATH1": "c:\\folder\\"})

-    assert environment_dict.get('PATH2') == 'somewhere_else;c:\\folder\\'
+    assert environment_dict.get("PATH2") == "somewhere_else;c:\\folder\\"


 def test_awkwardly_quoted_variable():
-    environment_recipe = parse_environment('VAR2=something"like this""$VAR1"$VAR1$(echo "theres more")"$(echo "and more!")"')
+    environment_recipe = parse_environment(
+        'VAR2=something"like this""$VAR1"$VAR1$(echo "theres more")"$(echo "and more!")"'
+    )

    # pass the existing process env so PATH is available
-    environment_dict = environment_recipe.as_dictionary({'VAR1': 'but wait'})
+    environment_dict = environment_recipe.as_dictionary({"VAR1": "but wait"})

-    assert environment_dict.get('VAR2') == 'somethinglike thisbut waitbut waittheres moreand more!'
+    assert environment_dict.get("VAR2") == "somethinglike thisbut waitbut waittheres moreand more!"
@@ -15,15 +15,15 @@ class ArgsInterceptor:
        self.kwargs = kwargs


-MOCK_PACKAGE_DIR = Path('some_package_dir')
+MOCK_PACKAGE_DIR = Path("some_package_dir")


@pytest.fixture(autouse=True)
 def mock_protection(monkeypatch):
-    '''
+    """
    Ensure that a unit test will never actually run a cibuildwheel 'build'
    function, which shouldn't be run on a developer's machine
-    '''
+    """

    def fail_on_call(*args, **kwargs):
        raise RuntimeError("This should never be called")
@@ -31,31 +31,31 @@ def mock_protection(monkeypatch):
    def ignore_call(*args, **kwargs):
        pass

-    monkeypatch.setattr(subprocess, 'Popen', fail_on_call)
-    monkeypatch.setattr(util, 'download', fail_on_call)
-    monkeypatch.setattr(windows, 'build', fail_on_call)
-    monkeypatch.setattr(linux, 'build', fail_on_call)
-    monkeypatch.setattr(macos, 'build', fail_on_call)
+    monkeypatch.setattr(subprocess, "Popen", fail_on_call)
+    monkeypatch.setattr(util, "download", fail_on_call)
+    monkeypatch.setattr(windows, "build", fail_on_call)
+    monkeypatch.setattr(linux, "build", fail_on_call)
+    monkeypatch.setattr(macos, "build", fail_on_call)

-    monkeypatch.setattr(Path, 'mkdir', ignore_call)
+    monkeypatch.setattr(Path, "mkdir", ignore_call)


@pytest.fixture(autouse=True)
 def fake_package_dir(monkeypatch):
-    '''
+    """
    Monkey-patch enough for the main() function to run
-    '''
+    """
    real_path_exists = Path.exists

    def mock_path_exists(path):
-        if path == MOCK_PACKAGE_DIR / 'setup.py':
+        if path == MOCK_PACKAGE_DIR / "setup.py":
            return True
        else:
            return real_path_exists(path)

-    args = ['cibuildwheel', str(MOCK_PACKAGE_DIR)]
-    monkeypatch.setattr(Path, 'exists', mock_path_exists)
-    monkeypatch.setattr(sys, 'argv', args)
+    args = ["cibuildwheel", str(MOCK_PACKAGE_DIR)]
+    monkeypatch.setattr(Path, "exists", mock_path_exists)
+    monkeypatch.setattr(sys, "argv", args)
    return args


@@ -65,26 +65,26 @@ def disable_print_wheels(monkeypatch):
    def empty_cm(*args, **kwargs):
        yield

-    monkeypatch.setattr(util, 'print_new_wheels', empty_cm)
+    monkeypatch.setattr(util, "print_new_wheels", empty_cm)


@pytest.fixture
 def allow_empty(request, monkeypatch, fake_package_dir):
-    monkeypatch.setattr(sys, 'argv', fake_package_dir + ['--allow-empty'])
+    monkeypatch.setattr(sys, "argv", fake_package_dir + ["--allow-empty"])


-@pytest.fixture(params=['linux', 'macos', 'windows'])
+@pytest.fixture(params=["linux", "macos", "windows"])
 def platform(request, monkeypatch):
    platform_value = request.param
-    monkeypatch.setenv('CIBW_PLATFORM', platform_value)
+    monkeypatch.setenv("CIBW_PLATFORM", platform_value)

-    if platform_value == 'windows':
-        monkeypatch.setattr(platform_module, 'machine', lambda: 'AMD64')
+    if platform_value == "windows":
+        monkeypatch.setattr(platform_module, "machine", lambda: "AMD64")
    else:
-        monkeypatch.setattr(platform_module, 'machine', lambda: 'x86_64')
+        monkeypatch.setattr(platform_module, "machine", lambda: "x86_64")

-    if platform_value == 'macos':
-        monkeypatch.setattr(macos, 'get_macos_version', lambda: (11, 1))
+    if platform_value == "macos":
+        monkeypatch.setattr(macos, "get_macos_version", lambda: (11, 1))

    return platform_value

@@ -93,13 +93,13 @@ def platform(request, monkeypatch):
 def intercepted_build_args(platform, monkeypatch):
    intercepted = ArgsInterceptor()

-    if platform == 'linux':
-        monkeypatch.setattr(linux, 'build', intercepted)
-    elif platform == 'macos':
-        monkeypatch.setattr(macos, 'build', intercepted)
-    elif platform == 'windows':
-        monkeypatch.setattr(windows, 'build', intercepted)
+    if platform == "linux":
+        monkeypatch.setattr(linux, "build", intercepted)
+    elif platform == "macos":
+        monkeypatch.setattr(macos, "build", intercepted)
+    elif platform == "windows":
+        monkeypatch.setattr(windows, "build", intercepted)
    else:
-        raise ValueError(f'unknown platform value: {platform}')
+        raise ValueError(f"unknown platform value: {platform}")

    return intercepted
@@ -12,9 +12,9 @@ from cibuildwheel.util import BuildSelector


 def test_output_dir(platform, intercepted_build_args, monkeypatch):
-    OUTPUT_DIR = Path('some_output_dir')
+    OUTPUT_DIR = Path("some_output_dir")

-    monkeypatch.setenv('CIBW_OUTPUT_DIR', str(OUTPUT_DIR))
+    monkeypatch.setenv("CIBW_OUTPUT_DIR", str(OUTPUT_DIR))

    main()

@@ -24,16 +24,16 @@ def test_output_dir(platform, intercepted_build_args, monkeypatch):
 def test_output_dir_default(platform, intercepted_build_args, monkeypatch):
    main()

-    assert intercepted_build_args.args[0].output_dir == Path('wheelhouse')
+    assert intercepted_build_args.args[0].output_dir == Path("wheelhouse")


-@pytest.mark.parametrize('also_set_environment', [False, True])
+@pytest.mark.parametrize("also_set_environment", [False, True])
 def test_output_dir_argument(also_set_environment, platform, intercepted_build_args, monkeypatch):
-    OUTPUT_DIR = Path('some_output_dir')
+    OUTPUT_DIR = Path("some_output_dir")

-    monkeypatch.setattr(sys, 'argv', sys.argv + ['--output-dir', str(OUTPUT_DIR)])
+    monkeypatch.setattr(sys, "argv", sys.argv + ["--output-dir", str(OUTPUT_DIR)])
    if also_set_environment:
-        monkeypatch.setenv('CIBW_OUTPUT_DIR', 'not_this_output_dir')
+        monkeypatch.setenv("CIBW_OUTPUT_DIR", "not_this_output_dir")

    main()

@@ -41,24 +41,24 @@ def test_output_dir_argument(also_set_environment, platform, intercepted_build_a


 def test_build_selector(platform, intercepted_build_args, monkeypatch, allow_empty):
-    BUILD = 'some build* *-selector'
-    SKIP = 'some skip* *-selector'
+    BUILD = "some build* *-selector"
+    SKIP = "some skip* *-selector"

-    monkeypatch.setenv('CIBW_BUILD', BUILD)
-    monkeypatch.setenv('CIBW_SKIP', SKIP)
+    monkeypatch.setenv("CIBW_BUILD", BUILD)
+    monkeypatch.setenv("CIBW_SKIP", SKIP)

    main()

    intercepted_build_selector = intercepted_build_args.args[0].build_selector
    assert isinstance(intercepted_build_selector, BuildSelector)
-    assert intercepted_build_selector('build24-this')
-    assert not intercepted_build_selector('skip65-that')
+    assert intercepted_build_selector("build24-this")
+    assert not intercepted_build_selector("skip65-that")
    # This unit test is just testing the options of 'main'
    # Unit tests for BuildSelector are in build_selector_test.py


 def test_empty_selector(platform, intercepted_build_args, monkeypatch):
-    monkeypatch.setenv('CIBW_SKIP', '*')
+    monkeypatch.setenv("CIBW_SKIP", "*")

    with pytest.raises(SystemExit) as e:
        main()
@@ -66,60 +66,64 @@ def test_empty_selector(platform, intercepted_build_args, monkeypatch):
    assert e.value.code == 3


-@pytest.mark.parametrize('architecture, image, full_image', [
-    ('x86_64', None, 'quay.io/pypa/manylinux2010_x86_64:*'),
-    ('x86_64', 'manylinux1', 'quay.io/pypa/manylinux1_x86_64:*'),
-    ('x86_64', 'manylinux2010', 'quay.io/pypa/manylinux2010_x86_64:*'),
-    ('x86_64', 'manylinux2014', 'quay.io/pypa/manylinux2014_x86_64:*'),
-    ('x86_64', 'manylinux_2_24', 'quay.io/pypa/manylinux_2_24_x86_64:*'),
-    ('x86_64', 'custom_image', 'custom_image'),
-    ('i686', None, 'quay.io/pypa/manylinux2010_i686:*'),
-    ('i686', 'manylinux1', 'quay.io/pypa/manylinux1_i686:*'),
-    ('i686', 'manylinux2010', 'quay.io/pypa/manylinux2010_i686:*'),
-    ('i686', 'manylinux2014', 'quay.io/pypa/manylinux2014_i686:*'),
-    ('i686', 'manylinux_2_24', 'quay.io/pypa/manylinux_2_24_i686:*'),
-    ('i686', 'custom_image', 'custom_image'),
-    ('pypy_x86_64', None, 'pypywheels/manylinux2010-pypy_x86_64:*'),
-    ('pypy_x86_64', 'manylinux1', 'manylinux1'),  # Does not exist
-    ('pypy_x86_64', 'manylinux2010', 'pypywheels/manylinux2010-pypy_x86_64:*'),
-    ('pypy_x86_64', 'manylinux2014', 'manylinux2014'),  # Does not exist (yet)
-    ('pypy_x86_64', 'custom_image', 'custom_image'),
-])
-def test_manylinux_images(architecture, image, full_image, platform, intercepted_build_args, monkeypatch):
+@pytest.mark.parametrize(
+    "architecture, image, full_image",
+    [
+        ("x86_64", None, "quay.io/pypa/manylinux2010_x86_64:*"),
+        ("x86_64", "manylinux1", "quay.io/pypa/manylinux1_x86_64:*"),
+        ("x86_64", "manylinux2010", "quay.io/pypa/manylinux2010_x86_64:*"),
+        ("x86_64", "manylinux2014", "quay.io/pypa/manylinux2014_x86_64:*"),
+        ("x86_64", "manylinux_2_24", "quay.io/pypa/manylinux_2_24_x86_64:*"),
+        ("x86_64", "custom_image", "custom_image"),
+        ("i686", None, "quay.io/pypa/manylinux2010_i686:*"),
+        ("i686", "manylinux1", "quay.io/pypa/manylinux1_i686:*"),
+        ("i686", "manylinux2010", "quay.io/pypa/manylinux2010_i686:*"),
+        ("i686", "manylinux2014", "quay.io/pypa/manylinux2014_i686:*"),
+        ("i686", "manylinux_2_24", "quay.io/pypa/manylinux_2_24_i686:*"),
+        ("i686", "custom_image", "custom_image"),
+        ("pypy_x86_64", None, "pypywheels/manylinux2010-pypy_x86_64:*"),
+        ("pypy_x86_64", "manylinux1", "manylinux1"),  # Does not exist
+        ("pypy_x86_64", "manylinux2010", "pypywheels/manylinux2010-pypy_x86_64:*"),
+        ("pypy_x86_64", "manylinux2014", "manylinux2014"),  # Does not exist (yet)
+        ("pypy_x86_64", "custom_image", "custom_image"),
+    ],
+)
+def test_manylinux_images(
+    architecture, image, full_image, platform, intercepted_build_args, monkeypatch
+):
    if image is not None:
-        monkeypatch.setenv('CIBW_MANYLINUX_' + architecture.upper() + '_IMAGE', image)
+        monkeypatch.setenv("CIBW_MANYLINUX_" + architecture.upper() + "_IMAGE", image)

    main()

-    if platform == 'linux':
-        assert fnmatch(
-            intercepted_build_args.args[0].manylinux_images[architecture],
-            full_image
-        )
+    if platform == "linux":
+        assert fnmatch(intercepted_build_args.args[0].manylinux_images[architecture], full_image)
    else:
        assert intercepted_build_args.args[0].manylinux_images is None


 def get_default_repair_command(platform):
-    if platform == 'linux':
-        return 'auditwheel repair -w {dest_dir} {wheel}'
-    elif platform == 'macos':
-        return 'delocate-listdeps {wheel} && delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}'
-    elif platform == 'windows':
-        return ''
+    if platform == "linux":
+        return "auditwheel repair -w {dest_dir} {wheel}"
+    elif platform == "macos":
+        return "delocate-listdeps {wheel} && delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}"
+    elif platform == "windows":
+        return ""
    else:
-        raise ValueError('Unknown platform', platform)
+        raise ValueError("Unknown platform", platform)


-@pytest.mark.parametrize('repair_command', [None, 'repair', 'repair -w {dest_dir} {wheel}'])
-@pytest.mark.parametrize('platform_specific', [False, True])
-def test_repair_command(repair_command, platform_specific, platform, intercepted_build_args, monkeypatch):
+@pytest.mark.parametrize("repair_command", [None, "repair", "repair -w {dest_dir} {wheel}"])
+@pytest.mark.parametrize("platform_specific", [False, True])
+def test_repair_command(
+    repair_command, platform_specific, platform, intercepted_build_args, monkeypatch
+):
    if repair_command is not None:
        if platform_specific:
-            monkeypatch.setenv('CIBW_REPAIR_WHEEL_COMMAND_' + platform.upper(), repair_command)
-            monkeypatch.setenv('CIBW_REPAIR_WHEEL_COMMAND', 'overwritten')
+            monkeypatch.setenv("CIBW_REPAIR_WHEEL_COMMAND_" + platform.upper(), repair_command)
+            monkeypatch.setenv("CIBW_REPAIR_WHEEL_COMMAND", "overwritten")
        else:
-            monkeypatch.setenv('CIBW_REPAIR_WHEEL_COMMAND', repair_command)
+            monkeypatch.setenv("CIBW_REPAIR_WHEEL_COMMAND", repair_command)

    main()

@@ -127,19 +131,18 @@ def test_repair_command(repair_command, platform_specific, platform, intercepted
    assert intercepted_build_args.args[0].repair_command == expected_repair


-@pytest.mark.parametrize('environment', [
-    {},
-    {'something': 'value'},
-    {'something': 'value', 'something_else': 'other_value'}
-])
-@pytest.mark.parametrize('platform_specific', [False, True])
+@pytest.mark.parametrize(
+    "environment",
+    [{}, {"something": "value"}, {"something": "value", "something_else": "other_value"}],
+)
+@pytest.mark.parametrize("platform_specific", [False, True])
 def test_environment(environment, platform_specific, platform, intercepted_build_args, monkeypatch):
-    env_string = ' '.join([f'{k}={v}' for k, v in environment.items()])
+    env_string = " ".join(f"{k}={v}" for k, v in environment.items())
    if platform_specific:
-        monkeypatch.setenv('CIBW_ENVIRONMENT_' + platform.upper(), env_string)
-        monkeypatch.setenv('CIBW_ENVIRONMENT', 'overwritten')
+        monkeypatch.setenv("CIBW_ENVIRONMENT_" + platform.upper(), env_string)
+        monkeypatch.setenv("CIBW_ENVIRONMENT", "overwritten")
    else:
-        monkeypatch.setenv('CIBW_ENVIRONMENT', env_string)
+        monkeypatch.setenv("CIBW_ENVIRONMENT", env_string)

    main()

@@ -148,75 +151,85 @@ def test_environment(environment, platform_specific, platform, intercepted_build
    assert intercepted_environment.as_dictionary(prev_environment={}) == environment


-@pytest.mark.parametrize('test_requires', [None, 'requirement other_requirement'])
-@pytest.mark.parametrize('platform_specific', [False, True])
-def test_test_requires(test_requires, platform_specific, platform, intercepted_build_args, monkeypatch):
+@pytest.mark.parametrize("test_requires", [None, "requirement other_requirement"])
+@pytest.mark.parametrize("platform_specific", [False, True])
+def test_test_requires(
+    test_requires, platform_specific, platform, intercepted_build_args, monkeypatch
+):
    if test_requires is not None:
        if platform_specific:
-            monkeypatch.setenv('CIBW_TEST_REQUIRES_' + platform.upper(), test_requires)
-            monkeypatch.setenv('CIBW_TEST_REQUIRES', 'overwritten')
+            monkeypatch.setenv("CIBW_TEST_REQUIRES_" + platform.upper(), test_requires)
+            monkeypatch.setenv("CIBW_TEST_REQUIRES", "overwritten")
        else:
-            monkeypatch.setenv('CIBW_TEST_REQUIRES', test_requires)
+            monkeypatch.setenv("CIBW_TEST_REQUIRES", test_requires)

    main()

-    assert intercepted_build_args.args[0].test_requires == (test_requires or '').split()
+    assert intercepted_build_args.args[0].test_requires == (test_requires or "").split()


-@pytest.mark.parametrize('test_extras', [None, 'extras'])
-@pytest.mark.parametrize('platform_specific', [False, True])
+@pytest.mark.parametrize("test_extras", [None, "extras"])
+@pytest.mark.parametrize("platform_specific", [False, True])
 def test_test_extras(test_extras, platform_specific, platform, intercepted_build_args, monkeypatch):
    if test_extras is not None:
        if platform_specific:
-            monkeypatch.setenv('CIBW_TEST_EXTRAS_' + platform.upper(), test_extras)
-            monkeypatch.setenv('CIBW_TEST_EXTRAS', 'overwritten')
+            monkeypatch.setenv("CIBW_TEST_EXTRAS_" + platform.upper(), test_extras)
+            monkeypatch.setenv("CIBW_TEST_EXTRAS", "overwritten")
        else:
-            monkeypatch.setenv('CIBW_TEST_EXTRAS', test_extras)
+            monkeypatch.setenv("CIBW_TEST_EXTRAS", test_extras)

    main()

-    assert intercepted_build_args.args[0].test_extras == ('[' + test_extras + ']' if test_extras else '')
+    assert intercepted_build_args.args[0].test_extras == (
+        "[" + test_extras + "]" if test_extras else ""
+    )


-@pytest.mark.parametrize('test_command', [None, 'test --command'])
-@pytest.mark.parametrize('platform_specific', [False, True])
-def test_test_command(test_command, platform_specific, platform, intercepted_build_args, monkeypatch):
+@pytest.mark.parametrize("test_command", [None, "test --command"])
+@pytest.mark.parametrize("platform_specific", [False, True])
+def test_test_command(
+    test_command, platform_specific, platform, intercepted_build_args, monkeypatch
+):
    if test_command is not None:
        if platform_specific:
-            monkeypatch.setenv('CIBW_TEST_COMMAND_' + platform.upper(), test_command)
-            monkeypatch.setenv('CIBW_TEST_COMMAND', 'overwritten')
+            monkeypatch.setenv("CIBW_TEST_COMMAND_" + platform.upper(), test_command)
+            monkeypatch.setenv("CIBW_TEST_COMMAND", "overwritten")
        else:
-            monkeypatch.setenv('CIBW_TEST_COMMAND', test_command)
+            monkeypatch.setenv("CIBW_TEST_COMMAND", test_command)

    main()

    assert intercepted_build_args.args[0].test_command == test_command


-@pytest.mark.parametrize('before_build', [None, 'before --build'])
-@pytest.mark.parametrize('platform_specific', [False, True])
-def test_before_build(before_build, platform_specific, platform, intercepted_build_args, monkeypatch):
+@pytest.mark.parametrize("before_build", [None, "before --build"])
+@pytest.mark.parametrize("platform_specific", [False, True])
+def test_before_build(
+    before_build, platform_specific, platform, intercepted_build_args, monkeypatch
+):
    if before_build is not None:
        if platform_specific:
-            monkeypatch.setenv('CIBW_BEFORE_BUILD_' + platform.upper(), before_build)
-            monkeypatch.setenv('CIBW_BEFORE_BUILD', 'overwritten')
+            monkeypatch.setenv("CIBW_BEFORE_BUILD_" + platform.upper(), before_build)
+            monkeypatch.setenv("CIBW_BEFORE_BUILD", "overwritten")
        else:
-            monkeypatch.setenv('CIBW_BEFORE_BUILD', before_build)
+            monkeypatch.setenv("CIBW_BEFORE_BUILD", before_build)

    main()

    assert intercepted_build_args.args[0].before_build == before_build


-@pytest.mark.parametrize('build_verbosity', [None, 0, 2, -2, 4, -4])
-@pytest.mark.parametrize('platform_specific', [False, True])
-def test_build_verbosity(build_verbosity, platform_specific, platform, intercepted_build_args, monkeypatch):
+@pytest.mark.parametrize("build_verbosity", [None, 0, 2, -2, 4, -4])
+@pytest.mark.parametrize("platform_specific", [False, True])
+def test_build_verbosity(
+    build_verbosity, platform_specific, platform, intercepted_build_args, monkeypatch
+):
    if build_verbosity is not None:
        if platform_specific:
-            monkeypatch.setenv('CIBW_BUILD_VERBOSITY_' + platform.upper(), str(build_verbosity))
-            monkeypatch.setenv('CIBW_BUILD_VERBOSITY', 'overwritten')
+            monkeypatch.setenv("CIBW_BUILD_VERBOSITY_" + platform.upper(), str(build_verbosity))
+            monkeypatch.setenv("CIBW_BUILD_VERBOSITY", "overwritten")
        else:
-            monkeypatch.setenv('CIBW_BUILD_VERBOSITY', str(build_verbosity))
+            monkeypatch.setenv("CIBW_BUILD_VERBOSITY", str(build_verbosity))

    main()

@@ -224,14 +237,24 @@ def test_build_verbosity(build_verbosity, platform_specific, platform, intercept
    assert intercepted_build_args.args[0].build_verbosity == expected_verbosity


-@pytest.mark.parametrize('option_name', ['CIBW_BUILD', 'CIBW_SKIP'])
-@pytest.mark.parametrize('option_value, build_selector_patterns', [
-    ('*-manylinux1_*', ['*-manylinux_*']),
-    ('*-macosx_10_6_intel', ['*-macosx_x86_64']),
-    ('*-macosx_10_9_x86_64', ['*-macosx_x86_64']),
-    ('cp37-macosx_10_9_x86_64', ['cp37-macosx_x86_64']),
-])
-def test_build_selector_migrations(intercepted_build_args, monkeypatch, option_name, option_value, build_selector_patterns, allow_empty):
+@pytest.mark.parametrize("option_name", ["CIBW_BUILD", "CIBW_SKIP"])
+@pytest.mark.parametrize(
+    "option_value, build_selector_patterns",
+    [
+        ("*-manylinux1_*", ["*-manylinux_*"]),
+        ("*-macosx_10_6_intel", ["*-macosx_x86_64"]),
+        ("*-macosx_10_9_x86_64", ["*-macosx_x86_64"]),
+        ("cp37-macosx_10_9_x86_64", ["cp37-macosx_x86_64"]),
+    ],
+)
+def test_build_selector_migrations(
+    intercepted_build_args,
+    monkeypatch,
+    option_name,
+    option_value,
+    build_selector_patterns,
+    allow_empty,
+):
    monkeypatch.setenv(option_name, option_value)

    main()
@@ -239,21 +262,21 @@ def test_build_selector_migrations(intercepted_build_args, monkeypatch, option_n
    intercepted_build_selector = intercepted_build_args.args[0].build_selector
    assert isinstance(intercepted_build_selector, BuildSelector)

-    if option_name == 'CIBW_BUILD':
+    if option_name == "CIBW_BUILD":
        assert intercepted_build_selector.build_patterns == build_selector_patterns
    else:
        assert intercepted_build_selector.skip_patterns == build_selector_patterns


-@pytest.mark.parametrize('before_all', ["", None, 'test text'])
-@pytest.mark.parametrize('platform_specific', [False, True])
+@pytest.mark.parametrize("before_all", ["", None, "test text"])
+@pytest.mark.parametrize("platform_specific", [False, True])
 def test_before_all(before_all, platform_specific, platform, intercepted_build_args, monkeypatch):
    if before_all is not None:
        if platform_specific:
-            monkeypatch.setenv('CIBW_BEFORE_ALL_' + platform.upper(), before_all)
-            monkeypatch.setenv('CIBW_BEFORE_ALL', 'overwritten')
+            monkeypatch.setenv("CIBW_BEFORE_ALL_" + platform.upper(), before_all)
+            monkeypatch.setenv("CIBW_BEFORE_ALL", "overwritten")
        else:
-            monkeypatch.setenv('CIBW_BEFORE_ALL', before_all)
+            monkeypatch.setenv("CIBW_BEFORE_ALL", before_all)

    main()

@@ -9,29 +9,29 @@ from .conftest import MOCK_PACKAGE_DIR


 def test_unknown_platform_non_ci(monkeypatch, capsys):
-    monkeypatch.delenv('CI', raising=False)
-    monkeypatch.delenv('BITRISE_BUILD_NUMBER', raising=False)
-    monkeypatch.delenv('AZURE_HTTP_USER_AGENT', raising=False)
-    monkeypatch.delenv('TRAVIS', raising=False)
-    monkeypatch.delenv('APPVEYOR', raising=False)
-    monkeypatch.delenv('GITHUB_ACTIONS', raising=False)
-    monkeypatch.delenv('GITLAB_CI', raising=False)
-    monkeypatch.delenv('CIRCLECI', raising=False)
-    monkeypatch.delenv('CIBW_PLATFORM', raising=False)
+    monkeypatch.delenv("CI", raising=False)
+    monkeypatch.delenv("BITRISE_BUILD_NUMBER", raising=False)
+    monkeypatch.delenv("AZURE_HTTP_USER_AGENT", raising=False)
+    monkeypatch.delenv("TRAVIS", raising=False)
+    monkeypatch.delenv("APPVEYOR", raising=False)
+    monkeypatch.delenv("GITHUB_ACTIONS", raising=False)
+    monkeypatch.delenv("GITLAB_CI", raising=False)
+    monkeypatch.delenv("CIRCLECI", raising=False)
+    monkeypatch.delenv("CIBW_PLATFORM", raising=False)

    with pytest.raises(SystemExit) as exit:
        main()
        assert exit.value.code == 2
    _, err = capsys.readouterr()

-    assert 'cibuildwheel: Unable to detect platform.' in err
-    assert 'cibuildwheel should run on your CI server' in err
+    assert "cibuildwheel: Unable to detect platform." in err
+    assert "cibuildwheel should run on your CI server" in err


 def test_unknown_platform_on_ci(monkeypatch, capsys):
-    monkeypatch.setenv('CI', 'true')
-    monkeypatch.setattr(sys, 'platform', 'nonexistent')
-    monkeypatch.delenv('CIBW_PLATFORM', raising=False)
+    monkeypatch.setenv("CI", "true")
+    monkeypatch.setattr(sys, "platform", "nonexistent")
+    monkeypatch.delenv("CIBW_PLATFORM", raising=False)

    with pytest.raises(SystemExit) as exit:
        main()
@@ -42,19 +42,19 @@ def test_unknown_platform_on_ci(monkeypatch, capsys):


 def test_unknown_platform(monkeypatch, capsys):
-    monkeypatch.setenv('CIBW_PLATFORM', 'nonexistent')
+    monkeypatch.setenv("CIBW_PLATFORM", "nonexistent")

    with pytest.raises(SystemExit) as exit:
        main()
    _, err = capsys.readouterr()

    assert exit.value.code == 2
-    assert 'cibuildwheel: Unsupported platform: nonexistent' in err
+    assert "cibuildwheel: Unsupported platform: nonexistent" in err


 def test_platform_argument(platform, intercepted_build_args, monkeypatch):
-    monkeypatch.setenv('CIBW_PLATFORM', 'nonexistent')
-    monkeypatch.setattr(sys, 'argv', sys.argv + ['--platform', platform])
+    monkeypatch.setenv("CIBW_PLATFORM", "nonexistent")
+    monkeypatch.setattr(sys, "argv", sys.argv + ["--platform", platform])

    main()

@@ -72,24 +72,24 @@ def test_archs_default(platform, intercepted_build_args, monkeypatch):
    main()
    build_options = intercepted_build_args.args[0]

-    if platform == 'linux':
+    if platform == "linux":
        assert build_options.architectures == {Architecture.x86_64, Architecture.i686}
-    elif platform == 'windows':
+    elif platform == "windows":
        assert build_options.architectures == {Architecture.AMD64, Architecture.x86}
    else:
        assert build_options.architectures == {Architecture.x86_64}


-@pytest.mark.parametrize('use_env_var', [False, True])
+@pytest.mark.parametrize("use_env_var", [False, True])
 def test_archs_argument(platform, intercepted_build_args, monkeypatch, use_env_var):

    if use_env_var:
-        monkeypatch.setenv('CIBW_ARCHS', 'ppc64le')
+        monkeypatch.setenv("CIBW_ARCHS", "ppc64le")
    else:
-        monkeypatch.setenv('CIBW_ARCHS', 'unused')
-        monkeypatch.setattr(sys, 'argv', sys.argv + ['--archs', 'ppc64le'])
+        monkeypatch.setenv("CIBW_ARCHS", "unused")
+        monkeypatch.setattr(sys, "argv", sys.argv + ["--archs", "ppc64le"])

-    if platform in {'macos', 'windows'}:
+    if platform in {"macos", "windows"}:
        with pytest.raises(SystemExit) as exit:
            main()
        assert exit.value.args == (4,)
@@ -101,54 +101,50 @@ def test_archs_argument(platform, intercepted_build_args, monkeypatch, use_env_v


 def test_archs_platform_specific(platform, intercepted_build_args, monkeypatch):
-    monkeypatch.setenv('CIBW_ARCHS', 'unused')
-    monkeypatch.setenv('CIBW_ARCHS_LINUX', 'ppc64le')
-    monkeypatch.setenv('CIBW_ARCHS_WINDOWS', 'x86')
-    monkeypatch.setenv('CIBW_ARCHS_MACOS', 'x86_64')
+    monkeypatch.setenv("CIBW_ARCHS", "unused")
+    monkeypatch.setenv("CIBW_ARCHS_LINUX", "ppc64le")
+    monkeypatch.setenv("CIBW_ARCHS_WINDOWS", "x86")
+    monkeypatch.setenv("CIBW_ARCHS_MACOS", "x86_64")

    main()
    build_options = intercepted_build_args.args[0]

-    if platform == 'linux':
+    if platform == "linux":
        assert build_options.architectures == {Architecture.ppc64le}
-    elif platform == 'windows':
+    elif platform == "windows":
        assert build_options.architectures == {Architecture.x86}
-    elif platform == 'macos':
+    elif platform == "macos":
        assert build_options.architectures == {Architecture.x86_64}


 def test_archs_platform_native(platform, intercepted_build_args, monkeypatch):
-    monkeypatch.setenv('CIBW_ARCHS', 'native')
+    monkeypatch.setenv("CIBW_ARCHS", "native")

    main()
    build_options = intercepted_build_args.args[0]

-    if platform == 'linux':
+    if platform in {"linux", "macos"}:
        assert build_options.architectures == {Architecture.x86_64}
-    elif platform == 'windows':
+    elif platform == "windows":
        assert build_options.architectures == {Architecture.AMD64}
-    elif platform == 'macos':
-        assert build_options.architectures == {Architecture.x86_64}


 def test_archs_platform_auto64(platform, intercepted_build_args, monkeypatch):
-    monkeypatch.setenv('CIBW_ARCHS', 'auto64')
+    monkeypatch.setenv("CIBW_ARCHS", "auto64")

    main()
    build_options = intercepted_build_args.args[0]

-    if platform == 'linux':
+    if platform in {"linux", "macos"}:
        assert build_options.architectures == {Architecture.x86_64}
-    elif platform == 'windows':
+    elif platform == "windows":
        assert build_options.architectures == {Architecture.AMD64}
-    elif platform == 'macos':
-        assert build_options.architectures == {Architecture.x86_64}


 def test_archs_platform_auto32(platform, intercepted_build_args, monkeypatch):
-    monkeypatch.setenv('CIBW_ARCHS', 'auto32')
+    monkeypatch.setenv("CIBW_ARCHS", "auto32")

-    if platform == 'macos':
+    if platform == "macos":
        with pytest.raises(SystemExit) as exit:
            main()
        assert exit.value.args == (4,)
@@ -158,21 +154,31 @@ def test_archs_platform_auto32(platform, intercepted_build_args, monkeypatch):

        build_options = intercepted_build_args.args[0]

-        if platform == 'linux':
+        if platform == "linux":
            assert build_options.architectures == {Architecture.i686}
-        elif platform == 'windows':
+        elif platform == "windows":
            assert build_options.architectures == {Architecture.x86}


 def test_archs_platform_all(platform, intercepted_build_args, monkeypatch):
-    monkeypatch.setenv('CIBW_ARCHS', 'all')
+    monkeypatch.setenv("CIBW_ARCHS", "all")

    main()
    build_options = intercepted_build_args.args[0]

-    if platform == 'linux':
-        assert build_options.architectures == {Architecture.x86_64, Architecture.i686, Architecture.aarch64, Architecture.ppc64le, Architecture.s390x}
-    elif platform == 'windows':
+    if platform == "linux":
+        assert build_options.architectures == {
+            Architecture.x86_64,
+            Architecture.i686,
+            Architecture.aarch64,
+            Architecture.ppc64le,
+            Architecture.s390x,
+        }
+    elif platform == "windows":
        assert build_options.architectures == {Architecture.x86, Architecture.AMD64}
-    elif platform == 'macos':
-        assert build_options.architectures == {Architecture.x86_64, Architecture.arm64, Architecture.universal2}
+    elif platform == "macos":
+        assert build_options.architectures == {
+            Architecture.x86_64,
+            Architecture.arm64,
+            Architecture.universal2,
+        }
@@ -9,16 +9,16 @@ from cibuildwheel.__main__ import main

@pytest.fixture(autouse=True, scope="function")
 def fake_package_dir(monkeypatch, tmp_path):
-    '''
+    """
    Set up a fake project
-    '''
+    """

    local_path = tmp_path / "tmp_project"
    local_path.mkdir()

    local_path.joinpath("setup.py").touch()

-    monkeypatch.setattr(sys, 'argv', ['cibuildwheel', str(local_path)])
+    monkeypatch.setattr(sys, "argv", ["cibuildwheel", str(local_path)])

    return local_path

@@ -29,14 +29,14 @@ def test_no_override(platform, monkeypatch, intercepted_build_args):

    intercepted_build_selector = intercepted_build_args.args[0].build_selector

-    assert intercepted_build_selector('cp39-win32')
-    assert intercepted_build_selector('cp36-win32')
+    assert intercepted_build_selector("cp39-win32")
+    assert intercepted_build_selector("cp36-win32")

    assert intercepted_build_selector.requires_python is None


 def test_override_env(platform, monkeypatch, intercepted_build_args):
-    monkeypatch.setenv('CIBW_PROJECT_REQUIRES_PYTHON', '>=3.8')
+    monkeypatch.setenv("CIBW_PROJECT_REQUIRES_PYTHON", ">=3.8")

    main()

@@ -44,16 +44,20 @@ def test_override_env(platform, monkeypatch, intercepted_build_args):

    assert intercepted_build_selector.requires_python == SpecifierSet(">=3.8")

-    assert intercepted_build_selector('cp39-win32')
-    assert not intercepted_build_selector('cp36-win32')
+    assert intercepted_build_selector("cp39-win32")
+    assert not intercepted_build_selector("cp36-win32")


 def test_override_setup_cfg(platform, monkeypatch, intercepted_build_args, fake_package_dir):

-    fake_package_dir.joinpath("setup.cfg").write_text(textwrap.dedent("""
-        [options]
-        python_requires = >=3.8
-    """))
+    fake_package_dir.joinpath("setup.cfg").write_text(
+        textwrap.dedent(
+            """
+            [options]
+            python_requires = >=3.8
+            """
+        )
+    )

    main()

@@ -61,16 +65,20 @@ def test_override_setup_cfg(platform, monkeypatch, intercepted_build_args, fake_

    assert intercepted_build_selector.requires_python == SpecifierSet(">=3.8")

-    assert intercepted_build_selector('cp39-win32')
-    assert not intercepted_build_selector('cp36-win32')
+    assert intercepted_build_selector("cp39-win32")
+    assert not intercepted_build_selector("cp36-win32")


 def test_override_pyproject_toml(platform, monkeypatch, intercepted_build_args, fake_package_dir):

-    fake_package_dir.joinpath("pyproject.toml").write_text(textwrap.dedent("""
-        [project]
-        requires-python = ">=3.8"
-    """))
+    fake_package_dir.joinpath("pyproject.toml").write_text(
+        textwrap.dedent(
+            """
+            [project]
+            requires-python = ">=3.8"
+            """
+        )
+    )

    main()

@@ -78,20 +86,24 @@ def test_override_pyproject_toml(platform, monkeypatch, intercepted_build_args,

    assert intercepted_build_selector.requires_python == SpecifierSet(">=3.8")

-    assert intercepted_build_selector('cp39-win32')
-    assert not intercepted_build_selector('cp36-win32')
+    assert intercepted_build_selector("cp39-win32")
+    assert not intercepted_build_selector("cp36-win32")


 def test_override_setup_py_simple(platform, monkeypatch, intercepted_build_args, fake_package_dir):

-    fake_package_dir.joinpath("setup.py").write_text(textwrap.dedent("""
-        from setuptools import setup
+    fake_package_dir.joinpath("setup.py").write_text(
+        textwrap.dedent(
+            """
+            from setuptools import setup

-        setup(
-            name = "other",
-            python_requires = ">=3.7",
+            setup(
+                name = "other",
+                python_requires = ">=3.7",
+            )
+            """
        )
-    """))
+    )

    main()

@@ -99,5 +111,5 @@ def test_override_setup_py_simple(platform, monkeypatch, intercepted_build_args,

    assert intercepted_build_selector.requires_python == SpecifierSet(">=3.7")

-    assert intercepted_build_selector('cp39-win32')
-    assert not intercepted_build_selector('cp36-win32')
+    assert intercepted_build_selector("cp39-win32")
+    assert not intercepted_build_selector("cp36-win32")
@@ -5,16 +5,20 @@ from cibuildwheel.projectfiles import get_requires_python_str, setup_py_python_r

 def test_read_setup_py_simple(tmp_path):
    with open(tmp_path / "setup.py", "w") as f:
-        f.write(dedent("""
-            from setuptools import setup
+        f.write(
+            dedent(
+                """
+                from setuptools import setup

-            setup(
-                name = "hello",
-                other = 23,
-                example = ["item", "other"],
-                python_requires = "1.23",
+                setup(
+                    name = "hello",
+                    other = 23,
+                    example = ["item", "other"],
+                    python_requires = "1.23",
+                )
+                """
            )
-            """))
+        )

    assert setup_py_python_requires(tmp_path.joinpath("setup.py").read_text()) == "1.23"
    assert get_requires_python_str(tmp_path) == "1.23"
@@ -22,18 +26,22 @@ def test_read_setup_py_simple(tmp_path):

 def test_read_setup_py_full(tmp_path):
    with open(tmp_path / "setup.py", "w") as f:
-        f.write(dedent("""
-            import setuptools
+        f.write(
+            dedent(
+                """
+                import setuptools

-            setuptools.randomfunc()
+                setuptools.randomfunc()

-            setuptools.setup(
-                name = "hello",
-                other = 23,
-                example = ["item", "other"],
-                python_requires = "1.24",
+                setuptools.setup(
+                    name = "hello",
+                    other = 23,
+                    example = ["item", "other"],
+                    python_requires = "1.24",
+                )
+                """
            )
-            """))
+        )

    assert setup_py_python_requires(tmp_path.joinpath("setup.py").read_text()) == "1.24"
    assert get_requires_python_str(tmp_path) == "1.24"
@@ -41,18 +49,22 @@ def test_read_setup_py_full(tmp_path):

 def test_read_setup_py_assign(tmp_path):
    with open(tmp_path / "setup.py", "w") as f:
-        f.write(dedent("""
-            from setuptools import setup
+        f.write(
+            dedent(
+                """
+                from setuptools import setup

-            REQUIRES = "3.21"
+                REQUIRES = "3.21"

-            setuptools.setup(
-                name = "hello",
-                other = 23,
-                example = ["item", "other"],
-                python_requires = REQUIRES,
+                setuptools.setup(
+                    name = "hello",
+                    other = 23,
+                    example = ["item", "other"],
+                    python_requires = REQUIRES,
+                )
+                """
            )
-            """))
+        )

    assert setup_py_python_requires(tmp_path.joinpath("setup.py").read_text()) is None
    assert get_requires_python_str(tmp_path) is None
@@ -60,18 +72,22 @@ def test_read_setup_py_assign(tmp_path):

 def test_read_setup_py_None(tmp_path):
    with open(tmp_path / "setup.py", "w") as f:
-        f.write(dedent("""
-            from setuptools import setup
+        f.write(
+            dedent(
+                """
+                from setuptools import setup

-            REQUIRES = None
+                REQUIRES = None

-            setuptools.setup(
-                name = "hello",
-                other = 23,
-                example = ["item", "other"],
-                python_requires = None,
+                setuptools.setup(
+                    name = "hello",
+                    other = 23,
+                    example = ["item", "other"],
+                    python_requires = None,
+                )
+                """
            )
-            """))
+        )

    assert setup_py_python_requires(tmp_path.joinpath("setup.py").read_text()) is None
    assert get_requires_python_str(tmp_path) is None
@@ -79,17 +95,21 @@ def test_read_setup_py_None(tmp_path):

 def test_read_setup_py_empty(tmp_path):
    with open(tmp_path / "setup.py", "w") as f:
-        f.write(dedent("""
-            from setuptools import setup
+        f.write(
+            dedent(
+                """
+                from setuptools import setup

-            REQUIRES = "3.21"
+                REQUIRES = "3.21"

-            setuptools.setup(
-                name = "hello",
-                other = 23,
-                example = ["item", "other"],
+                setuptools.setup(
+                    name = "hello",
+                    other = 23,
+                    example = ["item", "other"],
+                )
+                """
            )
-            """))
+        )

    assert setup_py_python_requires(tmp_path.joinpath("setup.py").read_text()) is None
    assert get_requires_python_str(tmp_path) is None
@@ -97,46 +117,62 @@ def test_read_setup_py_empty(tmp_path):

 def test_read_setup_cfg(tmp_path):
    with open(tmp_path / "setup.cfg", "w") as f:
-        f.write(dedent("""
-            [options]
-            python_requires = 1.234
-            [metadata]
-            something = other
-            """))
+        f.write(
+            dedent(
+                """
+                [options]
+                python_requires = 1.234
+                [metadata]
+                something = other
+                """
+            )
+        )

    assert get_requires_python_str(tmp_path) == "1.234"


 def test_read_setup_cfg_empty(tmp_path):
    with open(tmp_path / "setup.cfg", "w") as f:
-        f.write(dedent("""
-            [options]
-            other = 1.234
-            [metadata]
-            something = other
-            """))
+        f.write(
+            dedent(
+                """
+                [options]
+                other = 1.234
+                [metadata]
+                something = other
+                """
+            )
+        )

    assert get_requires_python_str(tmp_path) is None


 def test_read_pyproject_toml(tmp_path):
    with open(tmp_path / "pyproject.toml", "w") as f:
-        f.write(dedent("""
-            [project]
-            requires-python = "1.654"
+        f.write(
+            dedent(
+                """
+                [project]
+                requires-python = "1.654"

-            [tool.cibuildwheel]
-            something = "other"
-            """))
+                [tool.cibuildwheel]
+                something = "other"
+                """
+            )
+        )

    assert get_requires_python_str(tmp_path) == "1.654"


 def test_read_pyproject_toml_empty(tmp_path):
    with open(tmp_path / "pyproject.toml", "w") as f:
-        f.write(dedent("""
-            [project]
-            other = 1.234
-            """))
+        f.write(
+            dedent(
+                """
+                [project]
+                other = 1.234
+                """
+            )
+        )

    assert get_requires_python_str(tmp_path) is None
Author	SHA1	Message	Date
Henry Schreiner	da84127892	docs: add Python 3.8 to the identifer list (#728 )	2021-06-22 18:15:25 -04:00
Joe Rickerby	bf3a5590c9	Bump version: v1.12.0	2021-06-22 18:13:50 +01:00
Henry Schreiner	8734e0e4e6	ci: pin dockcross for tests	2021-06-21 12:27:18 -04:00
Henry Schreiner	744812b7d3	ci: pin dockcross for tests	2021-06-21 12:27:18 -04:00
Henry Schreiner	548e0cefe3	feat: support building universal2/arm64 from x64_86 Python 3.8 (#704 )	2021-06-21 12:27:18 -04:00
Joe Rickerby	6c62f9ee62	Bump version: v1.11.1.post1	2021-05-28 15:58:38 +01:00
Joe Rickerby	9a608b0b94	Fix mkdocs "Edit in Github" links	2021-05-28 15:53:26 +01:00
Joe Rickerby	5ea360607d	Bump version: v1.11.1	2021-05-28 15:50:45 +01:00
Matthieu Darbois	dc127cd69d	Revert "Temporarily disable CircleCI mac builds (#685 )" (#687 ) This reverts commit `af45aface9`.	2021-05-28 14:24:46 +01:00
Joe Rickerby	d1898152f7	Fix bump_version script	2021-05-28 14:13:04 +01:00
Joe Rickerby	e4a917f717	Revert "Remove travis-ci macOS from docs/examples" This reverts commit 5de574d36820c2481f4e7557ed6aa0e431ee3e63.	2021-05-24 17:24:36 -04:00
Henry Schreiner	6d5c80c624	ci: use native actions syntax (#662 )	2021-05-24 17:24:36 -04:00
Henry SchreinerandJoe Rickerby	6ab9906ff0	chore: rename joerick/cibuildwheel -> pypa/cibuildwheel (#682 ) * chore: rename joerick/cibuildwheel -> pypa/cibuildwheel * Update Appveyor status badge markup Note that it still has joerick/cibuildwheel - confusingly it's still within my appveyor account, but this is the new project that points to the pypa github repo * Update Appveyor badge markup again I went through a few passes to enable that project, here's the latest. * Update Azure badge, also * Update Travis badge to reference the .com Co-authored-by: Joe Rickerby <joerick@mac.com>	2021-05-24 17:24:36 -04:00
Matthieu Darbois	5150122a95	Fix Travis CI tests on ppc64le/s390x (#689 ) * Disable manylinux only tests on Travis CI ppc64le Those tests are taking too much disk space for the Travis CI runner right now. c.f. https://travis-ci.community/t/running-out-of-disk-space-quota-when-using-docker-on-ppc64le/11634 * Use focal to run aarch64/ppc64le/s390x jobs on Travis CI This removes allow_failures from the Travis CI s390x job * Use `focal` distribution for all Travis CI configurations * Revert "Disable manylinux only tests on Travis CI ppc64le" This reverts commit d0a09c689c058985c7dcb60b1e11a85a7bfce5e0. * Skip test_manylinuxXXXX_only on Travis CI ppc64le * Add a comment on why test_manylinuxXXXX_only test is skipped	2021-05-24 17:24:36 -04:00
Matthieu Darbois	e5556f67f4	Remove macOS build on travis-ci (#686 ) * Remove macOS build on travis-ci * Remove travis-ci macOS from docs/examples	2021-05-24 17:24:36 -04:00
Edoardopre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>Henry Schreiner	f6fc96400b	docs: update projects.yml (#673 ) * Update projects.yml Added EdoPro98/SimSiPM project * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * docs: add more projects * docs: rerun projects.py Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Henry Schreiner <henryschreineriii@gmail.com>	2021-05-24 17:24:36 -04:00
Joe Rickerby	7e3bbe6e04	Temporarily disable CircleCI mac builds (#685 )	2021-05-24 17:24:36 -04:00
Henry Schreiner	13f875a04a	chore: move to PyPA (PSF) CoC (#679 )	2021-05-18 13:51:04 -04:00
Henry SchreinerandMatthieu Darbois	339beb061c	[1.x] chore: bump to final Python 3.5 pin (#674 ) * chore: bump to final Python 3.5 pin * Update pinned_docker_images.cfg * Apply suggestions from code review Co-authored-by: Matthieu Darbois <mayeut@users.noreply.github.com> Co-authored-by: Matthieu Darbois <mayeut@users.noreply.github.com>	2021-05-14 16:41:12 -04:00
Henry Schreiner	fee39c2f35	fix: missing f for fstrings in bin (#659 )	2021-05-07 18:17:44 -04:00
Joe Rickerby	73adde0b9f	Enable tests on 1.x branch	2021-05-05 08:51:06 +01:00
pre-commit-ci[bot]andpre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>	2b2e35bdc9	[pre-commit.ci] pre-commit autoupdate (#656 ) updates: - [github.com/psf/black: 21.4b1 → 21.4b2](https://github.com/psf/black/compare/21.4b1...21.4b2) - [github.com/asottile/pyupgrade: v2.13.0 → v2.14.0](https://github.com/asottile/pyupgrade/compare/v2.13.0...v2.14.0) Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>	2021-05-03 14:07:29 -04:00
Henry Schreiner	bda76b21cb	style: activate string normalization	2021-05-03 13:12:36 -04:00
mayeut	d1900f6a05	Fix misaligned triple-quote blocks	2021-05-03 13:12:36 -04:00
Henry Schreiner	178aaea6c7	style: apply black via pre-commit run -a	2021-05-03 13:12:36 -04:00
Henry Schreiner	9cbed6a9be	chore: add black for all code, no string norm	2021-05-03 13:12:36 -04:00
Joe Rickerby	5716296071	Remove quotes from command line argument lists	2021-05-01 19:39:36 +01:00
Joe Rickerby	d33fffdc62	Add date to changelog	2021-05-01 18:45:31 +01:00
Joe Rickerby	aa12480ff0	'Bump version: v1.11.0'	2021-05-01 18:24:56 +01:00
Joe Rickerby	2c7c2c8fc7	'Bump version: v1.10.1'	2021-05-01 18:23:18 +01:00
Joe Rickerby	f0759803a3	fix: occasional nuget error (#653 ) * Try some things to debug Travis failures * Perhaps there is a config file * Update .travis.yml * Update .travis.yml * Add -FallbackSource to nuget invocation * Update windows.py * Tidy things up	2021-04-30 17:41:19 -04:00
Joe Rickerby	75af5944f5	Merge pull request #650 from joerick/docs-updates	2021-04-30 12:20:11 +01:00
Joe Rickerby	2737add6e5	Merge remote-tracking branch 'origin/master' into docs-updates	2021-04-30 11:14:13 +01:00
Joe Rickerby	e11c9070ce	Add a cross-link between the CPP discussion and the FAQ entry.	2021-04-30 11:10:54 +01:00
Henry SchreinerandJoe Rickerby	dff3aca4b6	style: second set of updates (#651 ) * style: second set of updates * style: more updates from joerick Co-authored-by: Joe Rickerby <joerick@mac.com> Co-authored-by: Joe Rickerby <joerick@mac.com>	2021-04-29 20:21:42 -04:00
Joe Rickerby	07b87ea651	Add Windows 2.7 FAQ entry.	2021-04-27 19:06:33 +01:00
Joe RickerbyandYannick Jadoul	0d08a1c85e	Apply suggestions from code review Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net>	2021-04-27 08:55:39 +01:00
pre-commit-ci[bot]	38ae494c0d	[pre-commit.ci] pre-commit autoupdate (#652 )	2021-04-26 15:24:46 -04:00
Henry Schreiner	38f52569aa	refactor: string and setup.cfg normalization (#593 )	2021-04-25 12:38:28 -04:00
Henry Schreiner	2f47e64225	chore: cleanup style in bin (#648 ) * chore: cleanup style for bump_version * chore: cleanup style for other bin items	2021-04-25 03:45:27 -04:00
Henry Schreiner	22d473acc0	fix: drop Python 2.7 on Windows using 2008 compiler	2021-04-25 00:55:16 -04:00
Henry Schreiner	f27943608b	ci: fix choco usage Following https://docs.chocolatey.org/en-us/choco/commands/#scripting-integration-best-practices-style-guide	2021-04-25 00:55:16 -04:00
Joe Rickerby	d8dd54af11	Update options.md	2021-04-23 15:38:01 +01:00
Joe Rickerby	9975f9c9bb	Copy pass over Options page - readability improvements and extra info	2021-04-23 12:43:56 +01:00
Joe Rickerby	a50dffd844	Fix formatting of code blocks in admonitions	2021-04-23 12:42:44 +01:00
Joe Rickerby	c6ede9b542	Remove some of the backtick token formatting. Using the backtick too much breaks up the flow of the text and makes it hard to read. Here, I'm deciding that project names are not backtick'd, unless they're referring to something the user would type. e.g. ❌ the `manylinux` project ✅ the manylinux project ❌ set `CIBW_MANYLINUX_IMAGE` to manylinux2010 ✅ set `CIBW_MANYLINUX_IMAGE` to `manylinux2010`	2021-04-23 12:11:43 +01:00
Joe Rickerby	04837dd593	Get rid of huge repetitive MANYLINUX_IMAGE header	2021-04-23 11:06:08 +01:00
Joe Rickerby	e9df889f56	Typography tweaks	2021-04-23 11:05:27 +01:00
Joe Rickerby	940b48f7e6	add note about 3.6+	2021-04-23 10:59:07 +01:00
Joe Rickerby	9c797c271b	Add delvewheel shoutout Fix #459	2021-04-23 10:34:01 +01:00
Joe Rickerby	e6cab342a8	Merge pull request #640 from joerick/pre-commit-ci-update-config [pre-commit.ci] pre-commit autoupdate	2021-04-22 15:11:51 +01:00
pre-commit-ci[bot]	4ac219c6f0	[pre-commit.ci] pre-commit autoupdate updates: - [github.com/asottile/pyupgrade: v2.11.0 → v2.12.0](https://github.com/asottile/pyupgrade/compare/v2.11.0...v2.12.0) - [github.com/PyCQA/flake8: 3.9.0 → 3.9.1](https://github.com/PyCQA/flake8/compare/3.9.0...3.9.1)	2021-04-19 16:41:13 +00:00
Jack Ting	1344fd4bd1	Bug fix: windows does not have 'which' command (#641 )	2021-04-14 13:54:54 +02:00
probot-auto-merge[bot]	88e993f452	Merge pull request #636 from joerick/update-dependencies-pr [Bot] Update dependencies	2021-04-06 07:15:33 +00:00
mayeut	5bc6b02eea	Update dependencies	2021-04-06 05:51:46 +00:00
probot-auto-merge[bot]	9f1f5f640d	Merge pull request #635 from joerick/pre-commit-ci-update-config [pre-commit.ci] pre-commit autoupdate	2021-04-05 17:54:53 +00:00
pre-commit-ci[bot]	710a3095f2	[pre-commit.ci] pre-commit autoupdate	2021-04-05 16:44:43 +00:00
github-actions[bot]andmayeut	b9099f35a0	Update dependencies (#634 ) Co-authored-by: mayeut <mayeut@users.noreply.github.com>	2021-04-05 11:33:28 +02:00
github-actions[bot]andmayeut	076d6b7594	Update dependencies (#631 ) Co-authored-by: mayeut <mayeut@users.noreply.github.com>	2021-03-29 11:07:12 +02:00
Joe Rickerby	b142b09e22	ci: make GHA pre-commit check a precursor to main test (#624 ) * Remove GHA pre-commit check This check was the same as the check performed by pre-commit.ci, except that the pre-commit.ci is a bit faster and can fix some issues itself, so I'm removing the GHA one in favour of the pre-commit one. * Add back precommit check and use it as a precursor This will prevent us wasting CI time on builds that failed precommit	2021-03-26 10:33:55 -04:00
Henry Schreiner Yannick Jadoul Joe Rickerby	5cbe3e2254	style: apply some cleanups from Sourcery.ai (#626 ) * style: apply some fixes from Sorcery * Apply suggestions from code review Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net> Co-authored-by: Joe Rickerby <joerick@mac.com> Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net> Co-authored-by: Joe Rickerby <joerick@mac.com>	2021-03-24 23:23:27 +01:00
pre-commit-ci[bot]andpre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>	96aa38b56c	[pre-commit.ci] pre-commit autoupdate (#622 ) Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>	2021-03-22 14:35:46 -04:00
github-actions[bot]andmayeut	4aecdff16a	chore: update dependencies (#625 ) Co-authored-by: mayeut <mayeut@users.noreply.github.com>	2021-03-22 12:47:58 -04:00
Matti PicusandYannick Jadoul	6b832703a4	docs: mention apt-get for manylinux2_24 (#623 ) * mention apt-get for manylinux2_24 * Fix typo * Undo reflow; pushing to a potentially separate PR Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net>	2021-03-18 15:03:04 -04:00
github-actions[bot]	d223db13d8	Update dependencies (#617 )	2021-03-08 09:24:28 -05:00
github-actions[bot]andhenryiii	c9451facbd	Update dependencies (#610 ) Co-authored-by: henryiii <henryiii@users.noreply.github.com>	2021-03-04 08:56:13 -05:00
Joe Rickerby	38d713fef6	Minor docs updates (#609 )	2021-03-04 08:55:19 -05:00
Henry Schreiner	4b5e9d8e88	docs: add PyPI field and a few more projects (#606 ) * docs: add PyPI field and a few more projects * chore: run ./bin/projects.py	2021-03-04 08:54:42 -05:00
Matti Picus	07447ff66c	add search plugin (#616 )	2021-03-04 12:17:30 +01:00
Henry Schreiner	845bfda599	fix: macos11 universal naming corrected (#614 )	2021-03-03 13:50:14 -05:00
Arnav JindalandYannick Jadoul	bc93615baa	docs: add polaroid to docs/data/projects.yml (#613 ) * Update projects.yml * Update docs/data/projects.yml Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net> * Update README.md through bin/project.py Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net>	2021-03-03 10:54:22 -05:00
Joe Rickerby	86b00da754	Minor docs updates	2021-02-26 16:36:35 +00:00