Bump version: v1.11.1.post1

Fix mkdocs "Edit in Github" links
Bump version: v1.11.1
2021-05-28 15:58:38 +01:00 · 2021-05-28 15:53:26 +01:00 · 2021-05-28 15:50:45 +01:00 · 2021-05-28 14:24:46 +01:00 · 2021-05-28 14:13:04 +01:00 · 2021-05-24 17:24:36 -04:00
114 changed files with 25473 additions and 5726 deletions
@@ -3,7 +3,7 @@ version: 2
 jobs:
  osx-python3.6:
    macos:
-      xcode: 12.5.1
+      xcode: 9.4.1
    environment:
      PYTHON: python3
    steps:
@@ -1,10 +1,9 @@
-#!/usr/bin/env bash
 set -o errexit
 set -o xtrace

 $PYTHON --version
 $PYTHON -m pip --version
-$PYTHON -m virtualenv -p "$PYTHON" venv
+$PYTHON -m virtualenv -p $PYTHON venv
 venv/bin/python -m pip install -e ".[dev]"
 venv/bin/python -m pip freeze
 venv/bin/python --version
@@ -1,31 +0,0 @@
-name: General issue
-description: Open a general issue
-
-body:
- type: markdown
-  attributes:
-    value: |
-      Hi! If you're not sure whether your problem is a bug in cibuildwheel or something else, please consider asking a question in the Discussions tab first.
-
- type: textarea
-  id: description
-  attributes:
-    label: Description
-
- type: input
-  id: log
-  attributes:
-    label: Build log
-    description: If relevant, please provide a link to a build log that shows the problem
-    placeholder: https://...
-  validations:
-    required: false
-
- type: input
-  id: ci-config
-  attributes:
-    label: CI config
-    description: Link to the CI config that produced the build log above. e.g. the Github Actions workflow file
-    placeholder: https://...
-  validations:
-    required: false
@@ -0,0 +1,7 @@
+# config file for https://github.com/bobvanderlinden/probot-auto-merge
+
+# no approvals required, just the label is enough
+minApprovals: {}
+
+requiredLabels:
+- merge when green
@@ -1,10 +0,0 @@
-version: 2
-updates:
-  # Maintain dependencies for GitHub Actions
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    ignore:
-      - dependency-name: "actions/*"
-        update-types: ["version-update:semver-minor", "version-update:semver-patch"]
@@ -3,17 +3,14 @@ name: Test
 on:
  push:
    branches:
-      - main
+      - master
+      - 1.x
  pull_request:
    paths-ignore:
      - 'docs/**'
  workflow_dispatch:
    # allow manual runs on branches without a PR

-concurrency:
-  group: test-${{ github.ref }}
-  cancel-in-progress: true
-
 jobs:
  pre-commit:
    name: Pre-commit checks (mypy, flake8, etc.)
@@ -21,7 +18,7 @@ jobs:
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
-    - uses: pre-commit/action@v2.0.3
+    - uses: pre-commit/action@v2.0.0

  test:
    name: Test cibuildwheel on ${{ matrix.os }}
@@ -29,8 +26,8 @@ jobs:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
-        os: [ubuntu-latest, windows-latest, macos-11]
-        python_version: ['3.10']
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python_version: ['3.7']
    timeout-minutes: 180
    steps:
    - uses: actions/checkout@v2
@@ -41,7 +38,7 @@ jobs:

    - name: Install dependencies
      run: |
-        python -m pip install ".[test]"
+        python -m pip install -e ".[dev]"

    - name: Sample build
      if: "contains(github.event.pull_request.labels.*.name, 'CI: Sample build')"
@@ -74,7 +71,7 @@ jobs:
    - uses: actions/setup-python@v2
    - name: Install dependencies
      run: |
-        python -m pip install ".[test]"
+        python -m pip install -r requirements-dev.txt

    - name: Set up QEMU
      id: qemu
@@ -8,30 +8,22 @@ on:
 jobs:
  update-dependencies:
    name: Update dependencies
-    if: github.repository_owner == 'pypa' || github.event_name != 'schedule'
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
-    - uses: excitedleigh/setup-nox@v2.0.0
-
-    - name: "Run update: dependencies"
-      run: nox --force-color -s update_constraints
-    - name: "Run update: python configs"
-      run: nox --force-color -s update_pins
-    - name: "Run update: docs user projects"
-      run: nox --force-color -s update_proj -- --auth=${{ secrets.GITHUB_TOKEN }}
-
-    # we use this step to grab a Github App auth token, so that PRs generated by this workflow
-    # run the GHA tests.
-    - uses: tibdex/github-app-token@v1
-      id: generate-token
-      if: github.ref == 'refs/heads/main' && github.repository == 'pypa/cibuildwheel'
+    - uses: actions/setup-python@v2
+      name: Install Python 3.9
      with:
-        app_id: ${{ secrets.CIBUILDWHEEL_BOT_APP_ID }}
-        private_key: ${{ secrets.CIBUILDWHEEL_BOT_APP_PRIVATE_KEY }}
-
+        python-version: 3.9
+        architecture: x64
+    - name: Install dependencies
+      run: python -m pip install ".[dev]"
+    - name: "Run update: dependencies"
+      run: python ./bin/update_dependencies.py
+    - name: "Run update: python configs"
+      run: python ./bin/update_pythons.py --force
    - name: Create Pull Request
-      if: github.ref == 'refs/heads/main' && github.repository == 'pypa/cibuildwheel'
+      if: github.ref == 'refs/heads/master' && github.repository == 'pypa/cibuildwheel'
      uses: peter-evans/create-pull-request@v3
      with:
        commit-message: Update dependencies
@@ -41,5 +33,4 @@ jobs:

          PR generated by "Update dependencies" [workflow](https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}).
        branch: update-dependencies-pr
-        token: ${{ steps.generate-token.outputs.token }}
        delete-branch: true
@@ -114,6 +114,3 @@ site/

 # Virtual environments
 venv*
-
-# PyCharm
-.idea/
@@ -1,7 +1,7 @@
 repos:

 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v4.0.1
+  rev: v3.4.0
  hooks:
  - id: check-case-conflict
  - id: check-merge-conflict
@@ -13,8 +13,37 @@ repos:
  - id: mixed-line-ending
  - id: trailing-whitespace

+- repo: https://github.com/PyCQA/isort
+  rev: 5.8.0
+  hooks:
+  - id: isort
+
+- repo: https://github.com/psf/black
+  rev: 21.4b2
+  hooks:
+  - id: black
+
+- 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
+  hooks:
+  - id: mypy
+    exclude: ^(bin/|cibuildwheel/resources/).*py$
+    additional_dependencies: [packaging]
+    args: ["--python-version=3.6", "--ignore-missing-imports", "--scripts-are-modules"]
+  - id: mypy
+    name: mypy 3.7+ on bin/
+    files: ^bin/.*py$
+    additional_dependencies: [packaging]
+    args: ["--python-version=3.7", "--ignore-missing-imports", "--scripts-are-modules"]
+
 - repo: https://github.com/asottile/pyupgrade
-  rev: v2.29.0
+  rev: v2.14.0
  hooks:
  - id: pyupgrade
    name: PyUpgrade 3.6+
@@ -25,97 +54,18 @@ repos:
    exclude: ^(cibuildwheel|unit_test|test)/
    args: ["--py37-plus"]

-# Autoremoves unused imports
- repo: https://github.com/hadialqattan/pycln
-  rev: v1.0.3
-  hooks:
-  - id: pycln
-    args: [--config=pyproject.toml]
-    stages: [manual]  # disabled due to artificial limit on Python 3.10
-
- repo: https://github.com/PyCQA/isort
-  rev: 5.9.3
-  hooks:
-  - id: isort
-
- repo: https://github.com/psf/black
-  rev: 21.9b0
-  hooks:
-  - id: black
-
- repo: https://github.com/asottile/setup-cfg-fmt
-  rev: v1.18.0
-  hooks:
-  - id: setup-cfg-fmt
-
- repo: https://github.com/pre-commit/mirrors-mypy
-  rev: v0.910-1
-  hooks:
-  - id: mypy
-    exclude: ^(bin|cibuildwheel/resources|docs)/.*py$
-    args: ["--python-version=3.6", "--scripts-are-modules", "--show-error-codes"]
-    additional_dependencies: &mypy-dependencies
-      - packaging>=21.0
-      - rich
-      - tomli
-      - types-certifi
-      - types-click
-      - types-dataclasses
-      - types-jinja2
-      - types-pyyaml
-      - types-requests
-  - id: mypy
-    name: mypy 3.7+ on bin/
-    files: ^((bin|docs)/.*py|noxfile.py)$
-    args: ["--python-version=3.7", "--scripts-are-modules", "--show-error-codes"]
-    additional_dependencies: *mypy-dependencies
-
- repo: https://github.com/asottile/yesqa
-  rev: v1.2.3
-  hooks:
-  - id: yesqa
-    additional_dependencies: &flake8-dependencies
-    - flake8-bugbear
-
 - repo: https://github.com/PyCQA/flake8
-  rev: 4.0.1
+  rev: 3.9.1
  hooks:
  - id: flake8
    exclude: cibuildwheel/resources/
-    additional_dependencies: *flake8-dependencies
-
- repo: https://github.com/pre-commit/pygrep-hooks
-  rev: v1.9.0
-  hooks:
-  - id: python-check-blanket-noqa
-    stages: [manual]
-  - id: python-check-blanket-type-ignore
-    stages: [manual]
-  - id: python-no-log-warn
-  - id: python-no-eval
-  - id: python-use-type-annotations
-
- repo: https://github.com/shellcheck-py/shellcheck-py
-  rev: v0.7.2.1
-  hooks:
-  - id: shellcheck
+    additional_dependencies: [flake8-bugbear]

 - repo: local
  hooks:
  - id: disallow-caps
    name: Disallow improper capitalization
    language: pygrep
-    entry: PyBind|Numpy|Cmake|Github|PyTest
+    entry: PyBind|Numpy|Cmake|Github
    types:
    - markdown
-  - id: update-readme-changelog
-    name: Update README changelog
-    language: python
-    entry: bin/update_readme_changelog.py
-    files: ^docs/changelog.md$
-
- repo: https://github.com/codespell-project/codespell
-  rev: v2.1.0
-  hooks:
-  - id: codespell
-    args: ["-L", "sur"]
@@ -4,7 +4,7 @@ language: python

 branches:
  only:
-  - main
+  - master

 jobs:
  include:
@@ -16,16 +16,13 @@ jobs:
    - name: Linux | arm64 | Python 3.6
      python: 3.6
      services: docker
-      arch: arm64-graviton2
-      group: edge
-      virt: vm
+      arch: arm64
      env: PYTHON=python

    - name: Linux | ppc64le | Python 3.6
      python: 3.6
      services: docker
      arch: ppc64le
-      allow_failure: True
      env:
        - PYTHON=python
        # skip test_manylinuxXXXX_only, it uses too much disk space
@@ -1,11 +1,12 @@
 This is a summary of the Python versions and platforms covered by the different CI platforms:

-|          | 3.6                          | 3.7                         | 3.8              |
-|----------|------------------------------|-----------------------------|------------------|
-| Linux    | Travis CI / CircleCI         | AppVeyor¹ / GitHub Actions  | Azure Pipelines  |
-| macOS    | CircleCI                     | AppVeyor¹ / GitHub Actions  | Azure Pipelines  |
-| Windows  | Travis CI / Azure Pipelines  | AppVeyor¹ / GitHub Actions  | Azure Pipelines  |
+|          | 3.6                          | 3.7                                      | 3.8              |
+|----------|------------------------------|------------------------------------------|------------------|
+| Linux    | Travis CI / CircleCI         | AppVeyor² / GitHub Actions               | Azure Pipelines  |
+| macOS    | CircleCI                     | AppVeyor² / Travis CI¹ / GitHub Actions  | Azure Pipelines  |
+| Windows  | Travis CI / Azure Pipelines  | AppVeyor² / GitHub Actions               | Azure Pipelines  |

-> ¹ AppVeyor only runs the "basic" test to reduce load.
+> ¹ Python version not really pinned, but dependent on the (default) version of image used.
+> ² AppVeyor only runs the "basic" test to reduce load.

 Non-x86 architectures are covered on Travis CI using Python 3.6.
@@ -22,3 +22,7 @@ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+Get-pip and Pip (bundled in cibuildwheel/resources) are licensed under the MIT
+license. See https://github.com/pypa/get-pip/blob/master/LICENSE.txt
@@ -4,10 +4,10 @@ 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/pypa/cibuildwheel/workflows/Test/badge.svg)](https://github.com/pypa/cibuildwheel/actions)
-[![Travis Status](https://img.shields.io/travis/com/pypa/cibuildwheel/main?logo=travis)](https://travis-ci.com/pypa/cibuildwheel)
-[![Appveyor status](https://ci.appveyor.com/api/projects/status/gt3vwl88yt0y3hur/branch/main?svg=true)](https://ci.appveyor.com/project/joerick/cibuildwheel/branch/main)
-[![CircleCI Status](https://img.shields.io/circleci/build/gh/pypa/cibuildwheel/main?logo=circleci)](https://circleci.com/gh/pypa/cibuildwheel)
-[![Azure Status](https://dev.azure.com/joerick0429/cibuildwheel/_apis/build/status/pypa.cibuildwheel?branchName=main)](https://dev.azure.com/joerick0429/cibuildwheel/_build/latest?definitionId=4&branchName=main)
+[![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)
@@ -22,24 +22,25 @@ Python wheels are great. Building them across **Mac, Linux, Windows**, on **mult
 What does it do?
 ----------------

-|   | macOS Intel | macOS Apple Silicon | Windows 64bit | Windows 32bit | manylinux<br/>musllinux x86_64 | manylinux<br/>musllinux i686 | manylinux<br/>musllinux aarch64 | manylinux<br/>musllinux ppc64le | manylinux<br/>musllinux s390x |
-|---------------|----|-----|-----|-----|----|-----|----|-----|-----|
-| CPython 3.6   | ✅ | N/A | ✅  | ✅  | ✅ | ✅  | ✅ | ✅  | ✅  |
-| CPython 3.7   | ✅ | N/A | ✅  | ✅  | ✅ | ✅  | ✅ | ✅  | ✅  |
-| CPython 3.8   | ✅ | ✅  | ✅  | ✅  | ✅ | ✅  | ✅ | ✅  | ✅  |
-| CPython 3.9   | ✅ | ✅  | ✅  | ✅  | ✅ | ✅  | ✅ | ✅  | ✅  |
-| CPython 3.10  | ✅ | ✅  | ✅  | ✅  | ✅ | ✅  | ✅ | ✅  | ✅  |
-| PyPy 3.7 v7.3 | ✅ | N/A | ✅  | N/A | ✅¹ | ✅¹  | ✅¹ | N/A | N/A |
+|   | macOS Intel | macOS Apple Silicon | Windows 64bit | Windows 32bit | manylinux x86_64 | manylinux i686 | manylinux aarch64 | manylinux ppc64le | manylinux s390x |
+|---|---|---|---|---|---|---|---|---|---|
+| CPython 2.7     | ✅ |   | ✅¹ | ✅¹ | ✅ | ✅ |    |    |   |
+| CPython 3.5     | ✅ |   | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
+| CPython 3.6     | ✅ |   | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
+| CPython 3.7     | ✅ |   | ✅  | ✅  | ✅ | ✅ | ✅ | ✅ | ✅ |
+| 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 PyPy is only supported for manylinux wheels.</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, musllinux, macOS 10.9+, and Windows wheels for CPython and PyPy
+- 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
 - Bundles shared library dependencies on Linux and macOS through [auditwheel](https://github.com/pypa/auditwheel) and [delocate](https://github.com/matthew-brett/delocate)
 - Runs your library's tests against the wheel-installed version of your library

-See the [cibuildwheel 1 documentation](https://cibuildwheel.readthedocs.io/en/1.x/) if you need to build unsupported versions of Python, such as Python 2.
-
 Usage
 -----

@@ -47,9 +48,9 @@ Usage

 |                 | Linux | macOS | Windows | Linux ARM |
 |-----------------|-------|-------|---------|--------------|
-| GitHub Actions  | ✅    | ✅    | ✅      | ✅¹          |
+| GitHub Actions  | ✅    | ✅    | ✅      | ✅¹           |
 | Azure Pipelines | ✅    | ✅    | ✅      |              |
-| Travis CI       | ✅    |       | ✅      | ✅           |
+| Travis CI       | ✅    | ✅    | ✅      | ✅           |
 | AppVeyor        | ✅    | ✅    | ✅      |              |
 | CircleCI        | ✅    | ✅    |         |              |
 | Gitlab CI       | ✅    |       |         |              |
@@ -63,7 +64,7 @@ Usage
 Example setup
 -------------

-To build manylinux, musllinux, macOS, and Windows wheels on GitHub Actions, you could use this `.github/workflows/wheels.yml`:
+To build manylinux, macOS, and Windows wheels on GitHub Actions, you could use this `.github/workflows/wheels.yml`:

 ```yaml
 name: Build
@@ -85,7 +86,7 @@ jobs:
      - uses: actions/setup-python@v2

      - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==2.2.0
+        run: python -m pip install cibuildwheel==1.11.1.post1

      - name: Build wheels
        run: python -m cibuildwheel --output-dir wheelhouse
@@ -98,7 +99,7 @@ jobs:
          path: ./wheelhouse/*.whl
 ```

-For more information, including 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/main/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
 -------
@@ -107,15 +108,13 @@ Options
 |---|--------|-------------|
 | **Build selection** | [`CIBW_PLATFORM`](https://cibuildwheel.readthedocs.io/en/stable/options/#platform)  | Override the auto-detected target platform |
 |   | [`CIBW_BUILD`](https://cibuildwheel.readthedocs.io/en/stable/options/#build-skip)  <br> [`CIBW_SKIP`](https://cibuildwheel.readthedocs.io/en/stable/options/#build-skip)  | Choose the Python versions to build |
-|   | [`CIBW_ARCHS`](https://cibuildwheel.readthedocs.io/en/stable/options/#archs)  | Change the architectures built on your machine by default. |
+|   | [`CIBW_ARCHS`](https://cibuildwheel.readthedocs.io/en/stable/options/#archs)  | Change the architectures built on your machine by default |
 |   | [`CIBW_PROJECT_REQUIRES_PYTHON`](https://cibuildwheel.readthedocs.io/en/stable/options/#requires-python)  | Manually set the Python compatibility of your project |
-|   | [`CIBW_PRERELEASE_PYTHONS`](https://cibuildwheel.readthedocs.io/en/stable/options/#prerelease-pythons)  | Enable building with pre-release versions of Python if available |
-| **Build customization** | [`CIBW_BUILD_FRONTEND`](https://cibuildwheel.readthedocs.io/en/stable/options/#build-frontend)  | Set the tool to use to build, either "pip" (default for now) or "build" |
-|   | [`CIBW_ENVIRONMENT`](https://cibuildwheel.readthedocs.io/en/stable/options/#environment)  | Set environment variables needed during the build |
+| **Build customization** | [`CIBW_ENVIRONMENT`](https://cibuildwheel.readthedocs.io/en/stable/options/#environment)  | Set environment variables needed during the build |
 |   | [`CIBW_BEFORE_ALL`](https://cibuildwheel.readthedocs.io/en/stable/options/#before-all)  | Execute a shell command on the build system before any wheels are built. |
 |   | [`CIBW_BEFORE_BUILD`](https://cibuildwheel.readthedocs.io/en/stable/options/#before-build)  | Execute a shell command preparing each wheel's build |
 |   | [`CIBW_REPAIR_WHEEL_COMMAND`](https://cibuildwheel.readthedocs.io/en/stable/options/#repair-wheel-command)  | Execute a shell command to repair each (non-pure Python) built wheel |
-|   | [`CIBW_MANYLINUX_*_IMAGE`<br/>`CIBW_MUSLLINUX_*_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#linux-image)  | Specify alternative manylinux / musllinux Docker images |
+|   | [`CIBW_MANYLINUX_X86_64_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)  <br> [`CIBW_MANYLINUX_I686_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)  <br> [`CIBW_MANYLINUX_PYPY_X86_64_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)  <br> [`CIBW_MANYLINUX_AARCH64_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)  <br> [`CIBW_MANYLINUX_PPC64LE_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)  <br> [`CIBW_MANYLINUX_S390X_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)  | Specify alternative manylinux docker images |
 |   | [`CIBW_DEPENDENCY_VERSIONS`](https://cibuildwheel.readthedocs.io/en/stable/options/#dependency-versions)  | Specify how cibuildwheel controls the versions of the tools it uses |
 | **Testing** | [`CIBW_TEST_COMMAND`](https://cibuildwheel.readthedocs.io/en/stable/options/#test-command)  | Execute a shell command to test each built wheel |
 |   | [`CIBW_BEFORE_TEST`](https://cibuildwheel.readthedocs.io/en/stable/options/#before-test)  | Execute a shell command before testing each wheel |
@@ -124,11 +123,12 @@ Options
 |   | [`CIBW_TEST_SKIP`](https://cibuildwheel.readthedocs.io/en/stable/options/#test-skip)  | Skip running tests on some builds |
 | **Other** | [`CIBW_BUILD_VERBOSITY`](https://cibuildwheel.readthedocs.io/en/stable/options/#build-verbosity)  | Increase/decrease the output of pip wheel |

-These options can be specified in a pyproject.toml file, as well; see [configuration](https://cibuildwheel.readthedocs.io/en/stable/options/#configuration).

 Working examples
 ----------------

+<!--working-examples-start-->
+
 Here are some repos that use cibuildwheel.

 <!-- START bin/projects.py -->
@@ -138,26 +138,122 @@ Here are some repos that use cibuildwheel.
 | Name                              | CI | OS | Notes |
 |-----------------------------------|----|----|:------|
 | [scikit-learn][]                  | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The machine learning library. A complex but clean config using many of cibuildwheel's features to build a large project with Cython and C++ extensions.  |
-| [Tornado][]                       | ![travisci icon][] | ![apple icon][] ![linux icon][] | Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. |
 | [Matplotlib][]                    | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The venerable Matplotlib, a Python library with C++ portions |
-| [pytorch-fairseq][]               | ![github icon][] | ![apple icon][] ![linux icon][] | Facebook AI Research Sequence-to-Sequence Toolkit written in Python. |
 | [MyPy][]                          | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | MyPyC, the compiled component of MyPy. |
-| [uvloop][]                        | ![github icon][] | ![apple icon][] ![linux icon][] | Ultra fast asyncio event loop. |
-| [pydantic][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Data parsing and validation using Python type hints |
 | [psutil][]                        | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Cross-platform lib for process and system monitoring in Python |
-| [vaex][]                          | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Out-of-Core hybrid Apache Arrow/NumPy DataFrame for Python, ML, visualize and explore big tabular data at a billion rows per second 🚀 |
-| [Google Benchmark][]              | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | A microbenchmark support library |
+| [scikit-image][]                  | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Image processing library. Uses cibuildwheel to build and test a project that uses Cython with platform-native code.  |
+| [twisted-iocpsupport][]           | ![github icon][] | ![windows icon][] | A submodule of Twisted that hooks into native C APIs using Cython. |
+| [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. |
+| [River][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | 🌊 Online machine learning in Python |
+| [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 |
+| [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 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 |
+| [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. |
+| [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 |
+| [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. |
+| [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
-[Tornado]: https://github.com/tornadoweb/tornado
 [Matplotlib]: https://github.com/matplotlib/matplotlib
-[pytorch-fairseq]: https://github.com/pytorch/fairseq
 [MyPy]: https://github.com/mypyc/mypy_mypyc-wheels
-[uvloop]: https://github.com/MagicStack/uvloop
-[pydantic]: https://github.com/samuelcolvin/pydantic
 [psutil]: https://github.com/giampaolo/psutil
-[vaex]: https://github.com/vaexio/vaex
-[Google Benchmark]: https://github.com/google/benchmark
+[scikit-image]: https://github.com/scikit-image/scikit-image
+[twisted-iocpsupport]: https://github.com/twisted/twisted-iocpsupport
+[websockets]: https://github.com/aaugustin/websockets
+[pyzmq]: https://github.com/zeromq/pyzmq
+[aiortc]: https://github.com/aiortc/aiortc
+[River]: https://github.com/online-ml/river
+[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
+[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 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
+[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
+[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
+[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
+[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
@@ -169,9 +265,72 @@ 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: 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 -->

-> ℹ️ That's just a handful, there are many more! Check out the [Working Examples](https://cibuildwheel.readthedocs.io/en/stable/working-examples) page in the docs.
+> 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>
+
+<!--working-examples-end-->

 Legal note
 ----------
@@ -185,66 +344,544 @@ This is similar to static linking, so it might have some licence implications. C
 Changelog
 =========

-<!-- START bin/update_readme_changelog.py -->
+<!--changelog-start-->

-<!-- this section was generated by bin/update_readme_changelog.py -- do not edit manually -->
+### v1.11.1

-### v2.2.0
+_28 May 2021_

-_22 October 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)

- 🌟 Added support for [musllinux](https://www.python.org/dev/peps/pep-0656/). Support for this new wheel format lets projects build wheels for Linux distributions that use [musl libc](https://musl.libc.org/), notably, [Alpine](https://alpinelinux.org/) Docker containers. (#768)
+### v1.11.0

-  Musllinux builds are enabled by default. If you're not ready to build musllinux, add `*-musllinux_*` to your [`CIBW_SKIP`/`skip`](https://cibuildwheel.readthedocs.io/en/stable/options/#build-skip) option. Or, you might have to make some changes to your options - to simplify that process, you can use...
+_1 May 2021_

- 🌟 TOML option overrides! This provides much greater flexibility in configuration via pyproject.toml. (#854)
+- 📚 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).

-  You can now set build options for any subset of your builds using a match pattern. So, for example, you can customise CPython 3.8 builds with an override on `cp38-*` or musllinux builds by selecting `*musllinux*`. Check out [the docs](https://cibuildwheel.readthedocs.io/en/latest/options/#overrides) for more info on the specifics.
+### v1.10.0

- 🛠 Added support for building PyPy wheels on macOS 11 CI runners. (#875)
+_22 Feb 2021_

- 🛠 Setting an empty string for the [`CIBW_*_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image) option will now fallthrough to the config file or cibuildwheel's default, rather than causing an error. This makes the option easier to use in CI build matricies. (#829)
+- ✨ Added `manylinux_2_24` support. To use these new Debian-based manylinux
+  images, set your [manylinux image](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)
+  options to `manylinux_2_24`.
+- 🛠 On macOS, we now set `MACOSX_DEPLOYMENT_TARGET` in before running
+  `CIBW_BEFORE_ALL`. This is useful when using `CIBW_BEFORE_ALL` to build a
+  shared library.
+- 🛠 An empty `CIBW_BUILD` option is now the same as being unset i.e, `*`.
+  This makes some build matrix configuration easier. (#588)
+- 📚 Neatened up documentation - added tabs to a few places (#576), fixed some
+  formatting issues.

- 🛠 Support for TOML 1.0 when reading config files, via the `tomli` package. (#876)
+### v1.9.0

-### v2.1.3
+_5 February 2021_

-_6 October 2021_
+- 🌟 Added support for Apple Silicon wheels on macOS! You can now
+  cross-compile `universal2` and `arm64` wheels on your existing macOS Intel
+  runners, by setting
+  [CIBW_ARCHS_MACOS](https://cibuildwheel.readthedocs.io/en/stable/options/#archs).
+  Xcode 12.2 or later is required, but you don't need macOS 11.0 - you can
+  still build on macOS 10.15. See
+  [this FAQ entry](https://cibuildwheel.readthedocs.io/en/stable/faq/#apple-silicon)
+  for more information. (#484)
+- 🌟 Added auto-detection of your package's Python compatibility, via declared
+   [`requires-python`](https://www.python.org/dev/peps/pep-0621/#requires-python)
+  in your `pyproject.toml`, or
+  [`python_requires`](https://packaging.python.org/guides/distributing-packages-using-setuptools/#python-requires)
+  in `setup.cfg` or `setup.py`. If your project has these set, cibuildwheel
+  will automatically skip builds on versions of Python that your package
+  doesn't support. Hopefully this makes the first-run experience of
+  cibuildwheel a bit easier. If you need to override this for any reason,
+  look at [`CIBW_PROJECT_REQUIRES_PYTHON`](https://cibuildwheel.readthedocs.io/en/stable/options/#requires-python).
+  (#536)
+- 🌟 cibuildwheel can now be invoked as a native GitHub Action! You can now
+  invoke cibuildwheel in a GHA build step like:

- 🛠 Updated CPython 3.10 to the 3.10.0 final release
+  ```yaml
+  - name: Build wheels
+    uses: pypa/cibuildwheel@version # e.g. v1.9.0
+    with:
+      output-dir: wheelhouse
+    # env:
+    #   CIBW_SOME_OPTION: value
+  ```

-### v2.1.2
+  This saves a bit of boilerplate, and you can [use Dependabot to keep the
+  pinned version up-to-date](https://cibuildwheel.readthedocs.io/en/stable/faq/#automatic-updates).

-_14 September 2021_
+- ✨ Added `auto64` and `auto32` shortcuts to the
+  [CIBW_ARCHS](https://cibuildwheel.readthedocs.io/en/stable/options/#archs)
+  option. (#553)
+- ✨ cibuildwheel now prints a list of the wheels built at the end of each
+  run. (#570)
+- 📚 Lots of minor docs improvements.

- 🛠 Updated CPython 3.10 to 3.10.0rc2
- 📚 Multiple docs updates
- 🐛 Improved warnings when built binaries are bundled into the container on Linux. (#807)
+### 1.8.0

-### v2.1.1
+_22 January 2021_

-_7 August 2021_
+- 🌟 Added support for emulated builds! You can now build manylinux wheels on
+  ARM64`aarch64`, as well as `ppc64le` and 's390x'. To build under emulation,
+  register QEMU via binfmt_misc and set the
+  [`CIBW_ARCHS_LINUX`](https://cibuildwheel.readthedocs.io/en/stable/options/#archs)
+  option to the architectures you want to run. See
+  [this FAQ entry](https://cibuildwheel.readthedocs.io/en/stable/faq/#emulation)
+  for more information. (#482)
+- ✨ Added `CIBW_TEST_SKIP` option. This allows you to choose certain builds
+  whose tests you'd like to skip. This might be useful when running a slow
+  test suite under emulation, for example. (#537)
+- ✨ Added `curly-{brace,bracket,paren}` style globbing to `CIBW_BUILD` and
+  `CIBW_SKIP`. This gives more expressivity, letting you do things like
+  `CIBW_BUILD=cp39-manylinux_{aarch64,ppc64le}`. (#527)
+- 🛠 cibuildwheel will now exit with an error if it's called with options that
+  skip all builds on a platform. This feature can be disabled by adding
+  `--allow-empty` on the command line. (#545)

- ✨ Corresponding with the release of CPython 3.10.0rc1, which is ABI stable, cibuildwheel now builds CPython 3.10 by default - without the CIBW_PRERELEASE_PYTHONS flag.
+### 1.7.4

-<sup>Note: v2.1.0 was a bad release, it was yanked from PyPI.</sup>
+_2 January 2021_

-### v2.0.1
+- 🐛 Fix the PyPy virtualenv patch to work on macOS 10.14 (#506)

-_25 July 2021_
+### 1.7.3

- 📚 Docs improvements (#767)
- 🛠 Dependency updates, including delocate 0.9.0.
+_1 January 2021_

-<!-- END bin/update_readme_changelog.py -->
+- 🛠 Added a patch for Pypy to ensure header files are available for building
+  in a virtualenv. (#502)
+- 🛠 Some preparatory work towards using cibuildwheel as a GitHub Action.
+  Check out
+  [the FAQ](https://cibuildwheel.readthedocs.io/en/stable/faq/#option-1-github-action)
+  for information on how to use it. We'll be fully updating the docs to this
+  approach in a subsequent release (#494)

---
+### 1.7.2

-That's the last few versions.
+_21 December 2020_

-ℹ️ **Want more changelog? Head over to [the changelog page in the docs](https://cibuildwheel.readthedocs.io/en/stable/changelog/).**
+- 🛠 Update dependencies, notably wheel==0.36.2 and pip==20.3.3, and CPython to
+  their latest bugfix releases (#489)
+- 📚 Switch to a GitHub example in the README (#479)
+- 📚 Create Working Examples table, with many projects that use cibuildwheel (#474)
+- 📚 Import Working Examples table and Changelog to docs

---
+### 1.7.1
+
+_3 December 2020_
+
+- 🛠 Update manylinux2010 image to resolve issues with 'yum' repositories
+  (#472)
+
+### 1.7.0
+
+_26 November 2020_
+
+- ✨ New logging format, that uses 'fold groups' in CI services that support
+  it. (#458)
+- 🛠 Update PyPy to 7.3.3 (#460)
+- 🐛 Fix a bug where CIBW_BEFORE_ALL runs with a very old version of Python on
+  Linux. (#464)
+
+### 1.6.4
+
+_31 October 2020_
+
+- 🐛 Fix crash on Appveyor during nuget install due to old system CA
+  certificates. We now use certifi's CA certs to download files. (#455)
+
+### 1.6.3
+
+_12 October 2020_
+
+- 🐛 Fix missing SSL certificates on macOS (#447)
+- 🛠 Update OpenSSL Python 3.5 patch to 1.1.1h on macOS (#449)
+
+### 1.6.2
+
+_9 October 2020_
+
+- ✨ Python 3.9 updated to the final release version - v3.9.0 (#440)
+- 🛠 Pypy updated to v7.3.2, adding alpha support for Python 3.7 (#430)
+
+### 1.6.1
+
+_20 September 2020_
+
+- 🛠 Add PPC64LE manylinux image supporting Python 3.9. (#436)
+- 📚 Add project URLs to PyPI listing (#428)
+
+### 1.6.0
+
+_9 September 2020_
+
+- 🌟 Add Python 3.9 support! This initial support uses release candidate
+  builds. You can start publishing wheels for Python 3.9 now, ahead of
+  the official release. (#382)
+
+  Minor note - if you're building PPC64LE wheels, the manylinux image pinned
+  by this version is
+  [still on Python 3.9b3](https://github.com/pypa/manylinux/issues/758), not a
+  release candidate. We'd advise holding off on distributing 3.9 ppc64le wheels
+  until a subsequent version of cibuildwheel.
+
+- 🌟 Add Gitlab CI support. Gitlab CI can now build Linux wheels, using
+  cibuildwheel. (#419)
+- 🐛 Fix a bug that causes pyproject.toml dependencies to fail to install on
+  Windows (#420)
+- 📚 Added some information about Windows VC++ runtimes and how they relate
+  to wheels.
+
+### 1.5.5
+
+_22 July 2020_
+
+- 🐛 Fix a bug that would cause command substitutions in CIBW_ENVIRONMENT to
+  produce no output on Linux (#411)
+- 🐛 Fix regression (introduced in 1.5.3) which caused BEFORE_BUILD and
+  BEFORE_ALL to be executed in the wrong directory (#410)
+
+### 1.5.4
+
+_19 June 2020_
+
+- 🐛 Fix a bug that would cause command substitutions in CIBW_ENVIRONMENT
+  variables to not interpret quotes in commands correctly (#406, #408)
+
+### 1.5.3
+
+_19 July 2020_
+
+- 🛠 Update CPython 3.8 to 3.8.3 (#405)
+- 🛠 Internal refactoring of Linux build, to move control flow into Python (#386)
+
+### 1.5.2
+
+_8 July 2020_
+
+- 🐛 Fix an issue on Windows where pyproject.toml would cause an error when
+  some requirements formats were used. (#401)
+- 🛠 Update CPython 3.7 to 3.7.8 (#394)
+
+### 1.5.1
+
+_25 June 2020_
+
+- 🐛 Fix "OSError: [WinError 17] The system cannot move the file to a different
+  disk drive" on GitHub Actions (#388, #389)
+
+### 1.5.0
+
+_24 June 2020_
+
+- 🌟 Add [`CIBW_BEFORE_ALL`](https://cibuildwheel.readthedocs.io/en/stable/options/#before-all)
+  option, which lets you run a command on the build machine before any wheels
+  are built. This is especially useful when building on Linux, to `make`
+  something external to Python, or to `yum install` a dependency. (#342)
+- ✨ Added support for projects using pyproject.toml instead of setup.py
+  (#360, #358)
+- ✨ Added workaround to allow Python 3.5 on Windows to pull dependencies from
+  pyproject.toml. (#358)
+- 📚 Improved GitHub Actions examples and docs (#354, #362)
+- 🐛 Ensure pip wheel uses the specified package, and doesn't build a wheel
+  from PyPI (#369)
+- 🛠 Internal changes: using pathlib.Path, precommit hooks, testing
+  improvements.
+
+### 1.4.2
+
+_25 May 2020_
+
+- 🛠 Dependency updates, including CPython 3.8.3 & manylinux images.
+- 🛠 Lots of internal updates - type annotations and checking using mypy, and
+  a new integration testing system.
+- ⚠️ Removed support for *running* cibuildwheel using Python 3.5. cibuildwheel
+  will continue to build Python 3.5 wheels until EOL.
+
+### 1.4.1
+
+_4 May 2020_
+
+- 🐛 Fix a bug causing programs running inside the i686 manylinux images to
+  think they were running x86_64 and target the wrong architecture. (#336,
+  #338)
+
+### 1.4.0
+
+_2 May 2020_
+
+- 🌟 Deterministic builds. cibuildwheel now locks the versions of the tools it
+  uses. This means that pinning your version of cibuildwheel pins the versions
+  of pip, setuptools, manylinux etc. that are used under the hood. This should
+  make things more reliable. But note that we don't control the entire build
+  environment on macOS and Windows, where the version of Xcode and Visual
+  Studio can still effect things.
+
+  This can be controlled using the [CIBW_DEPENDENCY_VERSIONS](https://cibuildwheel.readthedocs.io/en/stable/options/#dependency-versions)
+  and [manylinux image](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image)
+  options - if you always want to use the latest toolchain, you can still do
+  that, or you can specify your own pip constraints file and manylinux image.
+  (#256)
+
+- ✨ Added `package_dir` command line option, meaning we now support building
+  a package that lives in a subdirectory and pulls in files from the wider
+  project. See [the `package_dir` option help](https://cibuildwheel.readthedocs.io/en/stable/options/#command-line-options)
+  for more information.
+
+  Note that this change makes the working directory (where you call
+  cibuildwheel from) relevant on Linux, as it's considered the 'project' and
+  will be copied into the Docker container. If your builds are slower on this
+  version, that's likely the reason. `cd` to your project and then call
+  `cibuildwheel` from there. (#319, #295)
+
+- 🛠 On macOS, we make `MACOSX_DEPLOYMENT_TARGET` default to `10.9` if it's
+  not set. This should make things more consistent between Python versions.
+- 🛠 Dependency updates - CPython 3.7.7, CPython 2.7.18, Pypy 7.3.1.
+
+### 1.3.0
+
+_12 March 2020_
+
+- 🌟 Add support for building on GitHub Actions! Check out the
+  [docs](https://cibuildwheel.readthedocs.io/en/stable/setup/#github-actions)
+  for information on how to set it up. (#194)
+- ✨ Add the `CIBW_BEFORE_TEST` option, which lets you run a command to
+  prepare the environment before your tests are run. (#242)
+
+### 1.2.0
+
+_8 March 2020_
+
+- 🌟 Add support for building PyPy wheels, across Manylinux, macOS, and
+  Windows. (#185)
+- 🌟 Added the ability to build ARM64 (aarch64), ppc64le, and s390x wheels,
+  using manylinux2014 and Travis CI. (#273)
+- ✨ You can now build macOS wheels on Appveyor. (#230)
+- 🛠 Changed default macOS minimum target to 10.9, from 10.6. This allows the
+  use of more modern C++ libraries, among other things. (#156)
+- 🛠 Stop building universal binaries on macOS. We now only build x86_64
+  wheels on macOS. (#220)
+- ✨ Allow chaining of commands using `&&` and `||` on Windows inside
+  CIBW_BEFORE_BUILD and CIBW_TEST_COMMAND. (#293)
+- 🛠 Improved error reporting for failed Cython builds due to stale .so files
+  (#263)
+- 🛠 Update CPython from 3.7.5 to 3.7.6 and from 3.8.0 to 3.8.2 on Mac/Windows
+- 🛠 Improved error messages when a bad config breaks cibuildwheel's PATH
+  variable. (#264)
+- ⚠️ Removed support for *running* cibuildwheel on Python 2.7. cibuildwheel
+  will continue to build Python 2.7 wheels for a little while. (#265)
+
+### 1.1.0
+
+_7 December 2019_
+
+- 🌟 Add support for building manylinux2014 wheels. To use, set
+  `CIBW_MANYLINUX_X86_64_IMAGE` and CIBW_MANYLINUX_I686_IMAGE to
+  `manylinux2014`.
+- ✨ Add support for [Linux on Appveyor](https://www.appveyor.com/blog/2018/03/06/appveyor-for-linux/) (#204, #207)
+- ✨ Add `CIBW_REPAIR_WHEEL_COMMAND` env variable, for changing how
+  `auditwheel` or `delocate` are invoked, or testing an equivalent on
+  Windows. (#211)
+- 📚 Added some travis example configs - these are available in /examples. (#228)
+
+### 1.0.0
+
+_10 November 2019_
+
+- 🌟 Add support for building Python 3.8 wheels! (#180)
+- 🌟 Add support for building manylinux2010 wheels. cibuildwheel will now
+  build using the manylinux2010 images by default. If your project is still
+  manylinux1 compatible, you should get both manylinux1 and manylinux2010
+  wheels - you can upload both to PyPI. If you always require manylinux1 wheels, you can
+  build using the old manylinux1 image using the [manylinux image](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image) option.
+  (#155)
+- 📚 Documentation is now on its [own mini-site](https://cibuildwheel.readthedocs.io),
+   rather than on the README (#169)
+- ✨ Add support for building Windows wheels on Travis CI. (#160)
+- 🛠 If you set `CIBW_TEST_COMMAND`, your tests now run in a virtualenv. (#164)
+- 🛠 Windows now uses Python as installed by nuget, rather than the versions
+  installed by the various CI providers. (#180)
+- 🛠 Update Python from 2.7.16 to 2.7.17 and 3.7.4 to 3.7.5 on macOS (#171)
+- ⚠️ Removed support for Python 3.4 (#168)
+
+### 0.12.0
+
+_29 September 2019_
+
+- ✨ Add CIBW_TEST_EXTRAS option, to allow testing using extra_require
+  options. For example, set `CIBW_TEST_EXTRAS=test,qt` to make the wheel
+  installed with `pip install <wheel_file>[test,qt]`
+- 🛠 Update Python from 3.7.2 to 3.7.4 on macOS
+- 🛠 Update OpenSSL patch to 1.0.2t on macOS
+
+### 0.11.1
+
+_28 May 2019_
+
+- 🐛 Fix missing file in the release tarball, that was causing problems with
+  Windows builds (#141)
+
+### 0.11.0
+
+_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/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).
+
+### 0.10.2
+
+_10 March 2019_
+
+- 🛠 Revert temporary fix in macOS, that was working around a bug in pip 19 (#129)
+- 🛠 Update Python to 2.7.16 on macOS
+- 🛠 Update OpenSSL patch to 1.0.2r on macOS
+
+### 0.10.1
+
+_3 February 2019_
+
+- 🐛 Fix build stalling on macOS (that was introduced in pip 19) (#122)
+- 🐛 Fix "AttributeError: 'Popen' object has no attribute 'args'" on Python 2.7 for Linux builds (#108)
+- 🛠 Update Python from 3.6.7, 3.7.1 to 3.6.8, 3.7.2 on macOS
+- 🛠 Update openssl patch from 1.0.2p to 1.0.2q on macOS
+- 🛠 Sorting build options dict items when printing preamble (#114)
+
+### 0.10.0
+
+_23 September 2018_
+
+- 🌟 Add `CIBW_BUILD` option, for specifying which specific builds to perform (#101)
+- 🌟 Add support for building Mac and Linux on CircleCI (#91, #97)
+- 🛠 Improved support for building universal wheels (#95)
+- 🛠 Ensure log output is unbuffered and therefore in the correct order (#92)
+- 🛠 Improved error reporting for errors that occur inside a package's setup.py (#88)
+- ⚠️ Removed support for Python 3.3 on Windows.
+
+### 0.9.4
+
+_29 July 2018_
+
+- 🛠 CIBW_TEST_COMMAND now runs in a shell on Mac (as well as Linux) (#81)
+
+### 0.9.3
+
+_10 July 2018_
+
+- 🛠 Update to Python 3.6.6 on macOS (#82)
+- ✨ Add support for building Python 3.7 wheels on Windows (#76)
+- ⚠️ Deprecated support for Python 3.3 on Windows.
+
+### 0.9.2
+
+_1 July 2018_
+
+- 🛠  Update Python 3.7.0rc1 to 3.7.0 on macOS (#79)
+
+### 0.9.1
+
+_18 June 2018_
+
+- 🛠 Removed the need to use `{python}` and `{pip}` in `CIBW_BEFORE_BUILD` statements, by ensuring the correct version is always on the path at `python` and `pip` instead. (#60)
+- 🛠 We now patch the _ssl module on Python 3.4 and 3.5 so these versions can still make SSL web requests using TLS 1.2 while building. (#71)
+
+### 0.9.0
+
+_18 June 2018_
+
+- ✨ Add support for Python 3.7 (#73)
+
+### 0.8.0
+
+_4 May 2018_
+
+- ⚠️ Drop support for Python 3.3 on Linux (#67)
+- 🐛 Fix TLS by updating setuptools (#69)
+
+### 0.7.1
+
+_2 April 2017_
+
+- 🐛 macOS: Fix Pip bugs resulting from PyPI TLS 1.2 enforcement
+- 🐛 macOS: Fix brew Python3 version problems in the CI
+
+### 0.7.0
+
+_7 January 2018_
+
+- ✨ You can now specify a custom docker image using the `CIBW_MANYLINUX1_X86_64_IMAGE` and `CIBW_MANYLINUX1_I686_IMAGE` options. (#46)
+- 🐛 Fixed a bug where cibuildwheel would download and build a package from PyPI(!) instead of building the package on the local machine. (#51)
+
+### 0.6.0
+
+_9 October 2017_
+
+- ✨ On the Linux build, the host filesystem is now accessible via `/host` (#36)
+- 🐛 Fixed a bug where setup.py scripts would run the wrong version of Python when running subprocesses on Linux (#35)
+
+### 0.5.1
+
+_10 September 2017_
+
+- 🐛 Fixed a couple of bugs on Python 3.
+- ✨ Added experimental support for Mac builds on [Bitrise.io](https://www.bitrise.io)
+
+### 0.5.0
+
+_7 September 2017_
+
+- ✨ `CIBW_ENVIRONMENT` added. You can now set environment variables for each build, even within the Docker container on Linux. This is a big one! (#21)
+- ✨ `CIBW_BEFORE_BUILD` now runs in a system shell on all platforms. You can now do things like `CIBW_BEFORE_BUILD="cmd1 && cmd2"`. (#32)
+
+### 0.4.1
+
+_14 August 2017_
+
+- 🐛 Fixed a bug on Windows where subprocess' output was hidden (#23)
+- 🐛 Fixed a bug on AppVeyor where logs would appear in the wrong order due to output buffering (#24, thanks @YannickJadoul!)
+
+### 0.4.0
+
+_23 July 2017_
+
+- 🐛 Fixed a bug that was increasing the build time by building the wheel twice. This was a problem for large projects that have a long build time. If you're upgrading and you need the old behaviour, use `CIBW_BEFORE_BUILD={pip} install .`, or install exactly the dependencies you need in `CIBW_BEFORE_BUILD`. See #18.
+
+### 0.3.0
+
+_27 June 2017_
+
+- ⚠️ Removed Python 2.6 support on Linux (#12)
+
+### 0.2.1
+
+_11 June 2017_
+
+- 🛠 Changed the build process to install the package before building the wheel - this allows direct dependencies to be installed first (#9, thanks @tgarc!)
+- ✨ Added Python 3 support for the main process, for systems where Python 3 is the default (#8, thanks @tgarc).
+
+### 0.2.0
+
+_13 April 2017_
+
+- ✨ Added `CIBW_SKIP` option, letting users explicitly skip a build
+- ✨ Added `CIBW_BEFORE_BUILD` option, letting users run a shell command before the build starts
+
+### 0.1.3
+
+_31 March 2017_
+
+- 🌟 First public release!
+
+<!--changelog-end-->

 Contributing
 ============
@@ -17,12 +17,12 @@ runs:
  using: composite
  steps:

-    # Redirecting stderr to stdout to fix interleaving issue in Actions.
+    # This needs powershell-core because github.action path is a Windows-style
+    # path on Windows.  Powershell-core understands both types of paths.
    - run: >
        pipx run
-        --spec '${{ github.action_path }}'
+        --spec ${{ github.action_path }}
        cibuildwheel
        ${{ inputs.package-dir }}
        --output-dir ${{ inputs.output-dir }}
-        2>&1
-      shell: bash
+      shell: pwsh
@@ -15,7 +15,7 @@ init:
 - cmd: set PATH=C:\Python37;C:\Python37\Scripts;%PATH%
 - ps: |
      $BRANCH = if ($env:APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH) { $env:APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH } else { $env:APPVEYOR_REPO_BRANCH }
-      if (-not ($BRANCH -eq 'main' -or $BRANCH.ToLower().StartsWith('appveyor-'))) {
+      if (-not ($BRANCH -eq 'master' -or $BRANCH.ToLower().StartsWith('appveyor-'))) {
        $env:PYTEST_ADDOPTS='-k "unit_test or test_0_basic" --suppress-no-test-exit-code'
      }

@@ -27,7 +27,7 @@ test_script: python -u ./bin/run_tests.py

 branches:
  only:
-    - main
+    - master

 skip_commits:
  files:
@@ -1,6 +1,5 @@
 jobs:
 - job: linux_38
-  timeoutInMinutes: 120
  pool: {vmImage: 'Ubuntu-18.04'}
  steps:
    - task: UsePythonVersion@0
@@ -68,7 +68,7 @@ def bump_version() -> None:
        sys.exit(1)

    # fmt: off
-    print(              'Current version:', current_version)  # noqa: E201 whitespace
+    print(              'Current version:', current_version)  # noqa
    new_version = input('    New version: ').strip()
    # fmt: on

@@ -136,25 +136,6 @@ def bump_version() -> None:
    while input('Type "done" to continue: ').strip().lower() != "done":
        pass

-    # run pre-commit to update the README changelog
-    subprocess.run(
-        [
-            "pre-commit",
-            "run",
-            "--files=docs/changelog.md",
-        ]
-    )
-
-    # run pre-commit to check that no errors occurred on the second run
-    subprocess.run(
-        [
-            "pre-commit",
-            "run",
-            "--files=docs/changelog.md",
-        ],
-        check=True,
-    )
-
    subprocess.run(
        [
            "git",
@@ -7,7 +7,7 @@ from typing import Iterator

 import click
 import yaml
-from ghapi.core import GhApi, HTTP404NotFoundError  # type: ignore[import]
+from ghapi.core import GhApi, HTTP404NotFoundError  # type: ignore
 from rich import print

 from cibuildwheel.projectfiles import Analyzer
@@ -40,7 +40,7 @@ def main():
    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/main", check=True)
+    shell(f"git checkout -b {branch_name} origin/master", check=True)

    try:
        shell("bin/update_dependencies.py", check=True)
@@ -63,7 +63,7 @@ def main():
                "pr",
                "create",
                "--repo=pypa/cibuildwheel",
-                "--base=main",
+                "--base=master",
                "--title=Update dependencies",
                f"--body='{body}'",
            ],
@@ -5,7 +5,7 @@ Convert a yaml project list into a nice table.

 Suggested usage:

-    ./bin/projects.py docs/data/projects.yml --online --auth $GITHUB_API_TOKEN
+    ./bin/projects.py docs/data/projects.yml --online --auth $GITHUB_API_TOKEN --readme README.md
    git diff
 """

@@ -62,7 +62,7 @@ class Project:
                print(f"Broken: {self.stars_repo}")
                raise

-            self.num_stars: int = repo.stargazers_count
+            self.num_stars = repo.stargazers_count
            self.pushed_at = repo.pushed_at
            if not self.notes:
                notes = repo.description
@@ -139,35 +139,28 @@ def fetch_icon(icon_name: str) -> None:
        f.write(svgElement.toxml())


-def path_for_icon(icon_name: str, relative_to: Path | None = None) -> Path:
-    from_path = Path.cwd() if relative_to is None else relative_to.parent
-
-    absolute_path = PROJECT_ROOT / "docs" / "data" / "readme_icons" / f"{icon_name}.svg"
-
-    return absolute_path.resolve().relative_to(from_path.resolve())
+def path_for_icon(icon_name: str) -> Path:
+    return Path(".") / "docs" / "data" / "readme_icons" / f"{icon_name}.svg"


-def get_projects(
+def str_projects(
    config: list[dict[str, Any]],
    *,
    online: bool = True,
    auth: str | None = None,
-) -> list[Project]:
+) -> str:
+    io = StringIO()
+    print = functools.partial(builtins.print, file=io)
+
    if online:
        for icon in ICONS:
            fetch_icon(icon)

    github = Github(auth) if online else None

-    return sorted((Project(item, github) for item in config), reverse=online)
-
-
-def render_projects(projects: list[Project], *, dest_path: Path, include_info: bool = True):
-    io = StringIO()
-    print = functools.partial(builtins.print, file=io)
+    projects = sorted((Project(item, github) for item in config), reverse=online)

    print(Project.header())
-
    for project in projects:
        print(project.table_row())

@@ -177,73 +170,42 @@ def render_projects(projects: list[Project], *, dest_path: Path, include_info: b

    print()
    for icon in ICONS:
-        print(f"[{icon} icon]: {path_for_icon(icon, relative_to=dest_path).as_posix()}")
+        print(f"[{icon} icon]: {path_for_icon(icon).as_posix()}")

-    if include_info:
-        print()
-        for project in projects:
-            print(project.info())
+    print()
+    for project in projects:
+        print(project.info())

    return io.getvalue()


-def insert_projects_table(
-    file: Path,
-    *,
-    projects: list[Project],
-    input_filename: str,
-    include_info: bool = True,
-):
-    text = file.read_text()
-    projects_table = render_projects(projects, include_info=include_info, dest_path=file)
-
-    start_str = "<!-- START bin/projects.py -->\n"
-
-    start = text.find(start_str)
-    assert start != -1
-
-    end = text.find("<!-- END bin/projects.py -->\n")
-    assert end != -1
-
-    generated_note = f"<!-- this section is generated by bin/projects.py. Don't edit it directly, instead, edit {input_filename} -->"
-    new_text = (
-        f"{text[:start + len(start_str)]}\n{generated_note}\n\n{projects_table}\n{text[end:]}"
-    )
-
-    file.write_text(new_text)
-
-
-PROJECT_ROOT = Path(__file__).parent / ".."
-README_FILE = PROJECT_ROOT / "README.md"
-DOCS_PAGE = PROJECT_ROOT / "docs" / "working-examples.md"
-
-
-@click.command(help="Try ./bin/projects.py docs/data/projects.yml")
+@click.command(help="Try ./bin/projects.py docs/data/projects.yml --readme README.md")
@click.argument("input", type=click.File("r"))
@click.option("--online/--no-online", default=True, help="Get info from GitHub")
@click.option("--auth", help="GitHub authentication token")
-@click.option(
-    "--dry-run", default=False, help="Print the output, rather than writing it to files in the repo"
-)
+@click.option("--readme", type=click.File("r+"), help="Modify a readme file if given")
 def projects(
    input: TextIO,
    online: bool,
    auth: str | None,
-    dry_run: bool,
+    readme: TextIO | None,
 ) -> None:
    config = yaml.safe_load(input)
-    projects = get_projects(config, online=online, auth=auth)
+    output = str_projects(config, online=online, auth=auth)

-    if dry_run:
-        output = render_projects(projects, dest_path=README_FILE)
+    if readme is None:
        print(output)
    else:
-        insert_projects_table(
-            README_FILE, projects=projects[:10], input_filename=input.name, include_info=False
-        )
-        insert_projects_table(
-            DOCS_PAGE, projects=projects, input_filename=input.name, include_info=True
-        )
+        text = readme.read()
+        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} -->"
+        new_text = f"{text[:start + len(start_str)]}\n{generated_note}\n\n{output}\n{text[end:]}"
+
+        readme.seek(0)
+        readme.write(new_text)
+        readme.truncate()


 if __name__ == "__main__":
@@ -16,20 +16,8 @@ if __name__ == "__main__":
        unit_test_args += ["--run-docker"]
    subprocess.run(unit_test_args, check=True)

-    xdist_test_args = ["-n", "2"] if sys.platform.startswith("linux") else []
-
    # run the integration tests
    subprocess.run(
-        [
-            sys.executable,
-            "-m",
-            "pytest",
-            *xdist_test_args,
-            "-x",
-            "--durations",
-            "0",
-            "--timeout=2400",
-            "test",
-        ],
+        [sys.executable, "-m", "pytest", "-x", "--durations", "0", "--timeout=2400", "test"],
        check=True,
    )
@@ -1,40 +1,142 @@
 #!/usr/bin/env python3
-# This file supports 3.6+
+from __future__ import annotations

+import configparser
 import os
 import shutil
 import subprocess
 import sys
-from pathlib import Path
+from typing import NamedTuple

-DIR = Path(__file__).parent.resolve()
-RESOURCES = DIR.parent / "cibuildwheel/resources"
+import requests

-python_version = "".join(str(v) for v in sys.version_info[:2])
-
-env = os.environ.copy()
+os.chdir(os.path.dirname(__file__))
+os.chdir("..")

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

-os.chdir(DIR.parent)
+PYTHON_VERSIONS = ["27", "35", "36", "37", "38", "39"]

-subprocess.run(
-    [
-        "pip-compile",
-        "--allow-unsafe",
-        "--upgrade",
-        "cibuildwheel/resources/constraints.in",
-        f"--output-file=cibuildwheel/resources/constraints-python{python_version}.txt",
-    ],
-    check=True,
-    env=env,
-)
+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",
+                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)
+    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/"
+        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
-if python_version == "39":
-    shutil.copyfile(
-        RESOURCES / f"constraints-python{python_version}.txt",
-        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
+
+
+images = [
+    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),
+    # 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()
+
+for image in images:
+    # get the tag name whose digest matches 'latest'
+    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("/")
+        response = requests.get(
+            f"https://quay.io/api/v1/repository/{repository_name}?includeTags=true"
+        )
+        response.raise_for_status()
+        repo_info = response.json()
+        tags_dict = repo_info["tags"]
+
+        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"]
+        )
+    else:
+        response = requests.get(f"https://hub.docker.com/v2/repositories/{image.image_name}/tags")
+        response.raise_for_status()
+        tags = response.json()["results"]
+
+        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"]
+
+        pinned_tag = next(
+            tag for tag in tags if tag != latest_tag and tag["images"][0]["digest"] == digest
+        )
+        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}"
+
+with open("cibuildwheel/resources/pinned_docker_images.cfg", "w") as f:
+    config.write(f)
@@ -1,100 +0,0 @@
-#!/usr/bin/env python3
-from __future__ import annotations
-
-import configparser
-from pathlib import Path
-from typing import NamedTuple
-
-import requests
-
-DIR = Path(__file__).parent.resolve()
-RESOURCES = DIR.parent / "cibuildwheel/resources"
-
-
-class Image(NamedTuple):
-    manylinux_version: str
-    platform: str
-    image_name: str
-    tag: str | None  # Set this to pin the image
-
-
-images = [
-    # manylinux1 images
-    Image("manylinux1", "x86_64", "quay.io/pypa/manylinux1_x86_64", None),
-    Image("manylinux1", "i686", "quay.io/pypa/manylinux1_i686", None),
-    # manylinux2010 images
-    Image("manylinux2010", "x86_64", "quay.io/pypa/manylinux2010_x86_64", None),
-    Image("manylinux2010", "i686", "quay.io/pypa/manylinux2010_i686", None),
-    Image("manylinux2010", "pypy_x86_64", "quay.io/pypa/manylinux2010_x86_64", None),
-    Image("manylinux2010", "pypy_i686", "quay.io/pypa/manylinux2010_i686", None),
-    # manylinux2014 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),
-    Image("manylinux2014", "pypy_x86_64", "quay.io/pypa/manylinux2014_x86_64", None),
-    Image("manylinux2014", "pypy_i686", "quay.io/pypa/manylinux2014_i686", None),
-    Image("manylinux2014", "pypy_aarch64", "quay.io/pypa/manylinux2014_aarch64", None),
-    # manylinux_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),
-    Image("manylinux_2_24", "pypy_x86_64", "quay.io/pypa/manylinux_2_24_x86_64", None),
-    Image("manylinux_2_24", "pypy_i686", "quay.io/pypa/manylinux_2_24_i686", None),
-    Image("manylinux_2_24", "pypy_aarch64", "quay.io/pypa/manylinux_2_24_aarch64", None),
-    # musllinux_1_1 images
-    Image("musllinux_1_1", "x86_64", "quay.io/pypa/musllinux_1_1_x86_64", None),
-    Image("musllinux_1_1", "i686", "quay.io/pypa/musllinux_1_1_i686", None),
-    Image("musllinux_1_1", "aarch64", "quay.io/pypa/musllinux_1_1_aarch64", None),
-    Image("musllinux_1_1", "ppc64le", "quay.io/pypa/musllinux_1_1_ppc64le", None),
-    Image("musllinux_1_1", "s390x", "quay.io/pypa/musllinux_1_1_s390x", None),
-]
-
-config = configparser.ConfigParser()
-
-for image in images:
-    # get the tag name whose digest matches 'latest'
-    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("/")
-        response = requests.get(
-            f"https://quay.io/api/v1/repository/{repository_name}?includeTags=true"
-        )
-        response.raise_for_status()
-        repo_info = response.json()
-        tags_dict = repo_info["tags"]
-
-        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"]
-        )
-    else:
-        response = requests.get(f"https://hub.docker.com/v2/repositories/{image.image_name}/tags")
-        response.raise_for_status()
-        tags = response.json()["results"]
-
-        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"]
-
-        pinned_tag = next(
-            tag for tag in tags if tag != latest_tag and tag["images"][0]["digest"] == digest
-        )
-        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}"
-
-with open(RESOURCES / "pinned_docker_images.cfg", "w") as f:
-    config.write(f)
@@ -6,18 +6,18 @@ import copy
 import difflib
 import logging
 from pathlib import Path
-from typing import Any, Union
+from typing import Union

 import click
 import requests
 import rich
-import tomli
+import toml
 from packaging.specifiers import Specifier
 from packaging.version import Version
 from rich.logging import RichHandler
 from rich.syntax import Syntax

-from cibuildwheel.extra import dump_python_configurations
+from cibuildwheel.extra import InlineArrayDictEncoder
 from cibuildwheel.typing import Final, Literal, TypedDict

 log = logging.getLogger("cibw")
@@ -79,26 +79,23 @@ class WindowsVersions:
        response.raise_for_status()
        cp_info = response.json()

-        self.version_dict = {Version(v): v for v in cp_info["versions"]}
+        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) -> ConfigWinCP | None:
-
-        # Specifier.filter selects all non pre-releases that match the spec,
-        # unless there are only pre-releases, then it selects pre-releases
-        # instead (like pip)
-        unsorted_versions = spec.filter(self.version_dict)
-        versions = sorted(unsorted_versions, reverse=True)
-
+        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]
        log.debug(f"Windows {self.arch} {spec} has {', '.join(str(v) for v in versions)}")

        if not versions:
            return None

-        version = versions[0]
+        version = versions[-1]
        identifier = f"cp{version.major}{version.minor}-{self.arch}"
        return ConfigWinCP(
            identifier=identifier,
-            version=self.version_dict[version],
+            version=str(version),
            arch=self.arch_str,
        )

@@ -121,33 +118,26 @@ class PyPyVersions:
        ]
        self.arch = arch_str

-    def get_arch_file(self, release: dict[str, Any]) -> str:
-        urls: list[str] = [
-            rf["download_url"]
-            for rf in release["files"]
-            if "" in rf["platform"] == f"win{self.arch}"
-        ]
-        return urls[0] if urls else ""
-
    def update_version_windows(self, spec: Specifier) -> ConfigWinCP:
+        if self.arch != "32":
+            raise RuntimeError("64 bit releases not supported yet on Windows")
+
        releases = [r for r in self.releases if spec.contains(r["python_version"])]
-        releases = sorted(releases, key=lambda r: r["pypy_version"])  # type: ignore[no-any-return]
-        releases = [r for r in releases if self.get_arch_file(r)]
+        releases = sorted(releases, key=lambda r: r["pypy_version"])

        if not releases:
            raise RuntimeError(f"PyPy Win {self.arch} not found for {spec}! {self.releases}")

-        version_arch = "win32" if self.arch == "32" else "win_amd64"
-
        release = releases[-1]
        version = release["python_version"]
-        identifier = f"pp{version.major}{version.minor}-{version_arch}"
-        url = self.get_arch_file(release)
+        identifier = f"pp{version.major}{version.minor}-win32"
+
+        (url,) = [rf["download_url"] for rf in release["files"] if "" in rf["platform"] == "win32"]

        return ConfigWinPP(
            identifier=identifier,
            version=f"{version.major}.{version.minor}",
-            arch=self.arch,
+            arch="32",
            url=url,
        )

@@ -156,7 +146,7 @@ class PyPyVersions:
            raise RuntimeError("Other archs not supported yet on macOS")

        releases = [r for r in self.releases if spec.contains(r["python_version"])]
-        releases = sorted(releases, key=lambda r: r["pypy_version"])  # type: ignore[no-any-return]
+        releases = sorted(releases, key=lambda r: r["pypy_version"])

        if not releases:
            raise RuntimeError(f"PyPy macOS {self.arch} not found for {spec}!")
@@ -165,11 +155,11 @@ class PyPyVersions:
        version = release["python_version"]
        identifier = f"pp{version.major}{version.minor}-macosx_x86_64"

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

        return ConfigMacOS(
            identifier=identifier,
@@ -193,38 +183,31 @@ class CPythonVersions:
            # Removing the prefix, Python 3.9 would use: release["name"].removeprefix("Python ")
            version = Version(release["name"][7:])

-            uri = int(release["resource_uri"].rstrip("/").split("/")[-1])
-            self.versions_dict[version] = uri
+            if not version.is_prerelease and not version.is_devrelease:
+                uri = int(release["resource_uri"].rstrip("/").split("/")[-1])
+                self.versions_dict[version] = uri

-    def update_version_macos(
-        self, identifier: str, version: Version, spec: Specifier
-    ) -> ConfigMacOS | None:
+    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))

-        # see note above on Specifier.filter
-        unsorted_versions = spec.filter(self.versions_dict)
-        sorted_versions = sorted(unsorted_versions, reverse=True)
-
-        if version <= Version("3.8.9999"):
-            file_ident = "macosx10.9.pkg"
-        else:
-            file_ident = "macos11.pkg"
-
-        for new_version in sorted_versions:
+        for version in reversed(sorted_versions):
            # Find the first patch version that contains the requested file
-            uri = self.versions_dict[new_version]
+            uri = self.versions_dict[version]
            response = requests.get(
                f"https://www.python.org/api/v2/downloads/release_file/?release={uri}"
            )
            response.raise_for_status()
            file_info = response.json()

-            urls = [rf["url"] for rf in file_info if file_ident in rf["url"]]
-            if urls:
-                return ConfigMacOS(
-                    identifier=identifier,
-                    version=f"{new_version.major}.{new_version.minor}",
-                    url=urls[0],
-                )
+            for file_ident in file_idents:
+                urls = [rf["url"] for rf in file_info if file_ident in rf["url"]]
+                if urls:
+                    return ConfigMacOS(
+                        identifier=identifier,
+                        version=f"{version.major}.{version.minor}",
+                        url=urls[0],
+                    )

        return None

@@ -237,7 +220,7 @@ class AllVersions:
    def __init__(self) -> None:
        self.windows_32 = WindowsVersions("32")
        self.windows_64 = WindowsVersions("64")
-        self.windows_pypy_64 = PyPyVersions("64")
+        self.windows_pypy = PyPyVersions("32")

        self.macos_cpython = CPythonVersions()
        self.macos_pypy = PyPyVersions("64")
@@ -248,25 +231,28 @@ class AllVersions:
        spec = Specifier(f"=={version.major}.{version.minor}.*")
        log.info(f"Reading in '{identifier}' -> {spec} @ {version}")
        orig_config = copy.copy(config)
-        config_update: AnyConfig | None = None
+        config_update: AnyConfig | None

        # We need to use ** in update due to MyPy (probably a bug)
        if "macos" in identifier:
-            if identifier.startswith("cp"):
-                config_update = self.macos_cpython.update_version_macos(identifier, version, spec)
-            elif identifier.startswith("pp"):
+            if identifier.startswith("pp"):
                config_update = self.macos_pypy.update_version_macos(spec)
-        elif "win32" in identifier:
-            if identifier.startswith("cp"):
-                config_update = self.windows_32.update_version_windows(spec)
-        elif "win_amd64" in identifier:
-            if identifier.startswith("cp"):
-                config_update = self.windows_64.update_version_windows(spec)
-            elif identifier.startswith("pp"):
-                config_update = self.windows_pypy_64.update_version_windows(spec)
+            else:
+                config_update = self.macos_cpython.update_version_macos(identifier, spec)

-        assert config_update is not None, f"{identifier} not found!"
-        config.update(**config_update)
+            assert config_update is not None, f"MacOS {spec} not found!"
+            config.update(**config_update)
+        elif "win32" in identifier:
+            if identifier.startswith("pp"):
+                config.update(**self.windows_pypy.update_version_windows(spec))
+            else:
+                config_update = self.windows_32.update_version_windows(spec)
+                if config_update:
+                    config.update(**config_update)
+        elif "win_amd64" in identifier:
+            config_update = self.windows_64.update_version_windows(spec)
+            if config_update:
+                config.update(**config_update)

        if config != orig_config:
            log.info(f"  Updated {orig_config} to {config}")
@@ -275,7 +261,7 @@ class AllVersions:
@click.command()
@click.option("--force", is_flag=True)
@click.option(
-    "--level", default="INFO", type=click.Choice(["WARNING", "INFO", "DEBUG"], case_sensitive=False)
+    "--level", default="INFO", type=click.Choice(["INFO", "DEBUG", "TRACE"], case_sensitive=False)
 )
 def update_pythons(force: bool, level: str) -> None:

@@ -291,8 +277,7 @@ def update_pythons(force: bool, level: str) -> None:
    toml_file_path = RESOURCES_DIR / "build-platforms.toml"

    original_toml = toml_file_path.read_text()
-    with toml_file_path.open("rb") as f:
-        configs = tomli.load(f)
+    configs = toml.loads(original_toml)

    for config in configs["windows"]["python_configurations"]:
        all_versions.update_config(config)
@@ -300,7 +285,7 @@ def update_pythons(force: bool, level: str) -> None:
    for config in configs["macos"]["python_configurations"]:
        all_versions.update_config(config)

-    result_toml = dump_python_configurations(configs)
+    result_toml = toml.dumps(configs, encoder=InlineArrayDictEncoder())  # type: ignore

    rich.print()  # spacer

@@ -1,47 +0,0 @@
-#!/usr/bin/env python3
-
-import re
-import sys
-from pathlib import Path
-
-PROJECT_ROOT = Path(__file__).parent / ".."
-CHANGELOG_FILE = PROJECT_ROOT / "docs" / "changelog.md"
-README_FILE = PROJECT_ROOT / "README.md"
-
-# https://regexr.com/622ds
-FIRST_5_CHANGELOG_ENTRIES_REGEX = re.compile(r"""(^###.*?(?=###)){5}""", re.DOTALL | re.MULTILINE)
-
-# https://regexr.com/622e5
-README_CHANGELOG_SECTION = re.compile(
-    r"""(?<=<!-- START bin\/update_readme_changelog.py -->\n).*(?=<!-- END bin\/update_readme_changelog.py -->)""",
-    re.DOTALL,
-)
-
-
-def main():
-    changelog_text = CHANGELOG_FILE.read_text()
-    readme_text = README_FILE.read_text()
-
-    mini_changelog_match = FIRST_5_CHANGELOG_ENTRIES_REGEX.search(changelog_text)
-    assert mini_changelog_match, "Failed to find the first few changelog entries"
-
-    mini_changelog = "\n".join(
-        [
-            "",
-            "<!-- this section was generated by bin/update_readme_changelog.py -- do not edit manually -->",
-            "",
-            mini_changelog_match.group(0).strip(),
-            "",
-            "",
-        ]
-    )
-
-    if not re.search(README_CHANGELOG_SECTION, readme_text):
-        sys.exit("Changelog section not found in README")
-
-    readme_text = re.sub(README_CHANGELOG_SECTION, mini_changelog, readme_text)
-    README_FILE.write_text(readme_text)
-
-
-if __name__ == "__main__":
-    main()
@@ -1 +1 @@
-__version__ = "2.2.0"
+__version__ = "1.11.1.post1"
@@ -2,7 +2,12 @@ import argparse
 import os
 import sys
 import textwrap
-from typing import List, Set, Union
+import traceback
+from configparser import ConfigParser
+from pathlib import Path
+from typing import Dict, List, Optional, Set, Union, overload
+
+from packaging.specifiers import SpecifierSet

 import cibuildwheel
 import cibuildwheel.linux
@@ -10,9 +15,52 @@ import cibuildwheel.macos
 import cibuildwheel.util
 import cibuildwheel.windows
 from cibuildwheel.architecture import Architecture, allowed_architectures_check
-from cibuildwheel.options import CommandLineArguments, Options, compute_options
+from cibuildwheel.environment import EnvironmentParseError, parse_environment
+from cibuildwheel.projectfiles import get_requires_python_str
 from cibuildwheel.typing import PLATFORMS, PlatformName, assert_never
-from cibuildwheel.util import BuildSelector, Unbuffered, detect_ci_provider
+from cibuildwheel.util import (
+    BuildOptions,
+    BuildSelector,
+    DependencyConstraints,
+    TestSelector,
+    Unbuffered,
+    detect_ci_provider,
+    resources_dir,
+)
+
+
+@overload
+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
+    """
+    Returns an option from the environment, optionally scoped by the platform.
+
+    Example:
+      get_option_from_environment('CIBW_COLOR', platform='macos')
+
+      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()}")
+        if option is not None:
+            return option
+
+    return os.environ.get(option_name, default)


 def main() -> None:
@@ -21,9 +69,8 @@ def main() -> None:
    parser = argparse.ArgumentParser(
        description="Build wheels for all the platforms.",
        epilog="""
-            Most options are supplied via environment variables or in
-            --config-file (pyproject.toml usually). See
-            https://github.com/pypa/cibuildwheel#options for info.
+            Most options are supplied via environment variables.
+            See https://github.com/pypa/cibuildwheel#options for info.
        """,
    )

@@ -57,17 +104,10 @@ def main() -> None:

    parser.add_argument(
        "--output-dir",
+        default=os.environ.get("CIBW_OUTPUT_DIR", "wheelhouse"),
        help="Destination folder for the wheels.",
    )

-    parser.add_argument(
-        "--config-file",
-        help="""
-            TOML config file for cibuildwheel. Defaults to pyproject.toml, but
-            can be overridden with this option.
-        """,
-    )
-
    parser.add_argument(
        "package_dir",
        default=".",
@@ -92,13 +132,9 @@ def main() -> None:
        help="Do not report an error code if the build does not match any wheels.",
    )

-    parser.add_argument(
-        "--prerelease-pythons",
-        action="store_true",
-        help="Enable pre-release Python versions if available.",
-    )
+    args = parser.parse_args()

-    args = parser.parse_args(namespace=CommandLineArguments())
+    detect_obsolete_options()

    if args.platform != "auto":
        platform = args.platform
@@ -135,54 +171,171 @@ def main() -> None:
        print(f"cibuildwheel: Unsupported platform: {platform}", file=sys.stderr)
        sys.exit(2)

-    options = compute_options(platform=platform, command_line_arguments=args)
+    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 = ""
+    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=""
+    )

-    package_dir = options.globals.package_dir
    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))
-        msg = f"cibuildwheel: Could not find any of {{{names}}} at root of package"
-        print(msg, file=sys.stderr)
+        print(
+            f"cibuildwheel: Could not find any of {{{names}}} at root of package", file=sys.stderr
+        )
        sys.exit(2)

-    identifiers = get_build_identifiers(
-        platform=platform,
-        build_selector=options.globals.build_selector,
-        architectures=options.globals.architectures,
+    # 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 = 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
    )
+    test_selector = TestSelector(skip_config=test_skip)
+
+    try:
+        environment = parse_environment(environment_config)
+    except (EnvironmentParseError, ValueError):
+        print(f'cibuildwheel: Malformed environment option "{environment_config}"', file=sys.stderr)
+        traceback.print_exc(None, sys.stderr)
+        sys.exit(2)
+
+    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}]"
+
+    try:
+        build_verbosity = min(3, max(-3, int(build_verbosity_str)))
+    except ValueError:
+        build_verbosity = 0
+
+    # Add CIBUILDWHEEL environment variable
+    # This needs to be passed on to the docker container in linux.py
+    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 = Architecture.parse_config(archs_config_str, platform=platform)
+
+    identifiers = get_build_identifiers(platform, build_selector, archs)

    if args.print_build_identifiers:
        for identifier in identifiers:
            print(identifier)
        sys.exit(0)

-    # Add CIBUILDWHEEL environment variable
-    # This needs to be passed on to the docker container in linux.py
-    os.environ["CIBUILDWHEEL"] = "1"
+    manylinux_images: Optional[Dict[str, str]] = None
+    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.
+        # { 'x86_64': {'manylinux1': '...', 'manylinux2010': '...', 'manylinux2014': '...'},
+        #   'i686': {'manylinux1': '...', 'manylinux2010': '...', 'manylinux2014': '...'},
+        #   'pypy_x86_64': {'manylinux2010': '...' }
+        #   ... }
+
+        manylinux_images = {}
+
+        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_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")
+            elif config_value in pinned_images:
+                image = pinned_images[config_value]
+            else:
+                image = config_value
+
+            manylinux_images[build_platform] = image
+
+    build_options = BuildOptions(
+        architectures=archs,
+        package_dir=package_dir,
+        output_dir=output_dir,
+        test_command=test_command,
+        test_requires=test_requires,
+        test_extras=test_extras,
+        before_test=before_test,
+        before_build=before_build,
+        before_all=before_all,
+        build_verbosity=build_verbosity,
+        build_selector=build_selector,
+        test_selector=test_selector,
+        repair_command=repair_command,
+        environment=environment,
+        dependency_constraints=dependency_constraints,
+        manylinux_images=manylinux_images,
+    )

    # Python is buffering by default when running on the CI platforms, giving problems interleaving subprocess call output with unflushed calls to 'print'
-    sys.stdout = Unbuffered(sys.stdout)  # type: ignore[no-untyped-call,assignment]
+    sys.stdout = Unbuffered(sys.stdout)  # type: ignore

-    print_preamble(platform=platform, options=options, identifiers=identifiers)
+    print_preamble(platform, build_options)

    try:
-        options.check_for_invalid_configuration(identifiers)
-        allowed_architectures_check(platform, options.globals.architectures)
+        allowed_architectures_check(platform, build_options.architectures)
    except ValueError as err:
        print("cibuildwheel:", *err.args, file=sys.stderr)
        sys.exit(4)

    if not identifiers:
-        print(
-            f"cibuildwheel: No build identifiers selected: {options.globals.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)

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

@@ -190,16 +343,47 @@ def main() -> None:
        "\n{n} wheels produced in {m:.0f} minutes:", output_dir
    ):
        if platform == "linux":
-            cibuildwheel.linux.build(options)
+            cibuildwheel.linux.build(build_options)
        elif platform == "windows":
-            cibuildwheel.windows.build(options)
+            cibuildwheel.windows.build(build_options)
        elif platform == "macos":
-            cibuildwheel.macos.build(options)
+            cibuildwheel.macos.build(build_options)
        else:
            assert_never(platform)


-def print_preamble(platform: str, options: Options, identifiers: List[str]) -> 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"),
+    ]:
+        if deprecated in os.environ:
+            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]
+            else:
+                print(f"Option '{alternative}' is not empty. Please unset '{deprecated}'")
+                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"),
+        ]:
+            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}'"
+                )
+                os.environ[option] = os.environ[option].replace(deprecated, alternative)
+
+
+def print_preamble(platform: str, build_options: BuildOptions) -> None:
    print(
        textwrap.dedent(
            """
@@ -215,9 +399,10 @@ def print_preamble(platform: str, options: Options, identifiers: List[str]) -> N

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

-    warnings = detect_warnings(platform=platform, options=options, identifiers=identifiers)
+    warnings = detect_warnings(platform, build_options)
    if warnings:
        print("\nWarnings:")
        for warning in warnings:
@@ -253,14 +438,14 @@ def get_build_identifiers(
    return [config.identifier for config in python_configurations]


-def detect_warnings(platform: str, options: Options, identifiers: List[str]) -> List[str]:
+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"]:
-        option_values = [getattr(options.build_options(i), option_name) for i in identifiers]
+        option_value = getattr(build_options, option_name)

-        if any(o and ("{python}" in o or "{pip}" in o) for o in option_values):
+        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, "
@@ -17,7 +17,7 @@ class DockerContainer:
    An object that represents a running Docker container.

    Intended for use as a context manager e.g.
-    `with DockerContainer(docker_image = 'ubuntu') as docker:`
+    `with DockerContainer('ubuntu') as docker:`

    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
@@ -31,7 +31,7 @@ class DockerContainer:
    bash_stdout: IO[bytes]

    def __init__(
-        self, *, docker_image: str, simulate_32_bit: bool = False, cwd: Optional[PathOrStr] = None
+        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.")
@@ -1,4 +1,3 @@
-import dataclasses
 from typing import Dict, List, Mapping, Optional

 import bashlex
@@ -61,15 +60,10 @@ class EnvironmentAssignment:
    def __repr__(self) -> str:
        return f"{self.name}={self.value}"

-    def __eq__(self, other: object) -> bool:
-        if isinstance(other, EnvironmentAssignment):
-            return self.name == other.name and self.value == other.value
-        return False

-
-@dataclasses.dataclass
 class ParsedEnvironment:
-    assignments: List[EnvironmentAssignment]
+    def __init__(self, assignments: List[EnvironmentAssignment]):
+        self.assignments = assignments

    def as_dictionary(
        self,
@@ -88,7 +82,7 @@ class ParsedEnvironment:
        return [a.as_shell_assignment() for a in self.assignments]

    def __repr__(self) -> str:
-        return f"{self.__class__.__name__}({[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:
@@ -2,31 +2,22 @@
 These are utilities for the `/bin` scripts, not for the `cibuildwheel` program.
 """

-from io import StringIO
-from typing import Dict, List
+from typing import Any, Dict

-from .typing import Protocol
-
-__all__ = ("Printable", "dump_python_configurations")
+import toml.encoder
+from packaging.version import Version


-class Printable(Protocol):
-    def __str__(self) -> str:
-        ...
+class InlineArrayDictEncoder(toml.encoder.TomlEncoder):  # type: ignore
+    def __init__(self) -> None:
+        super().__init__()
+        self.dump_funcs[Version] = lambda v: f'"{v}"'

-
-def dump_python_configurations(inp: Dict[str, Dict[str, List[Dict[str, Printable]]]]) -> str:
-    output = StringIO()
-    for header, values in inp.items():
-        output.write(f"[{header}]\n")
-        for inner_header, listing in values.items():
-            output.write(f"{inner_header} = [\n")
-            for item in listing:
-                output.write("  { ")
-                dict_contents = (f'{key} = "{value}"' for key, value in item.items())
-                output.write(", ".join(dict_contents))
-                output.write(" },\n")
-            output.write("]\n")
-        output.write("\n")
-    # Strip the final newline, to avoid two blank lines at the end.
-    return output.getvalue()[:-1]
+    def dump_sections(self, o: Dict[str, Any], sup: str) -> Any:
+        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()
@@ -1,21 +1,21 @@
 import subprocess
 import sys
 import textwrap
-from collections import OrderedDict
 from pathlib import Path, PurePath
-from typing import Iterator, List, NamedTuple, Set
+from typing import List, NamedTuple, Set

 from .architecture import Architecture
 from .docker_container import DockerContainer
 from .logger import log
-from .options import Options
-from .typing import PathOrStr, assert_never
+from .typing import PathOrStr
 from .util import (
+    BuildOptions,
    BuildSelector,
    NonPlatformWheelError,
    get_build_verbosity_extra_flags,
    prepare_command,
    read_python_configs,
+    resources_dir,
 )


@@ -29,12 +29,6 @@ class PythonConfiguration(NamedTuple):
        return PurePath(self.path_str)


-class BuildStep(NamedTuple):
-    platform_configs: List[PythonConfiguration]
-    platform_tag: str
-    docker_image: str
-
-
 def get_python_configurations(
    build_selector: BuildSelector,
    architectures: Set[Architecture],
@@ -54,257 +48,7 @@ def get_python_configurations(
    ]


-def docker_image_for_python_configuration(config: PythonConfiguration, options: Options) -> str:
-    build_options = options.build_options(config.identifier)
-    # e.g
-    # identifier is 'cp310-manylinux_x86_64'
-    # platform_tag is 'manylinux_x86_64'
-    # platform_arch is 'x86_64'
-    _, platform_tag = config.identifier.split("-", 1)
-    _, platform_arch = platform_tag.split("_", 1)
-
-    assert build_options.manylinux_images is not None
-    assert build_options.musllinux_images is not None
-
-    return (
-        build_options.manylinux_images[platform_arch]
-        if platform_tag.startswith("manylinux")
-        else build_options.musllinux_images[platform_arch]
-    )
-
-
-def get_build_steps(
-    options: Options, python_configurations: List[PythonConfiguration]
-) -> Iterator[BuildStep]:
-    """
-    Groups PythonConfigurations into BuildSteps. Each BuildStep represents a
-    separate Docker container.
-    """
-    steps: OrderedDict[tuple, BuildStep] = OrderedDict()  # type: ignore[type-arg]
-
-    for config in python_configurations:
-        _, platform_tag = config.identifier.split("-", 1)
-
-        before_all = options.build_options(config.identifier).before_all
-        docker_image = docker_image_for_python_configuration(config, options)
-
-        step_key = (platform_tag, docker_image, before_all)
-
-        if step_key in steps:
-            steps[step_key].platform_configs.append(config)
-        else:
-            steps[step_key] = BuildStep(
-                platform_configs=[config], platform_tag=platform_tag, docker_image=docker_image
-            )
-
-    yield from steps.values()
-
-
-def build_on_docker(
-    *,
-    options: Options,
-    platform_configs: List[PythonConfiguration],
-    docker: DockerContainer,
-    container_project_path: PurePath,
-    container_package_dir: PurePath,
-) -> None:
-    container_output_dir = PurePath("/output")
-
-    log.step("Copying project into Docker...")
-    docker.copy_into(Path.cwd(), container_project_path)
-
-    before_all_options_identifier = platform_configs[0].identifier
-    before_all_options = options.build_options(before_all_options_identifier)
-
-    if before_all_options.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 = before_all_options.environment.as_dictionary(
-            env, executor=docker.environment_executor
-        )
-
-        before_all_prepared = prepare_command(
-            before_all_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)
-        build_options = options.build_options(config.identifier)
-
-        dependency_constraint_flags: List[PathOrStr] = []
-
-        if build_options.dependency_constraints:
-            constraints_file = build_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]
-
-        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"]}'
-
-        env = build_options.environment.as_dictionary(env, executor=docker.environment_executor)
-
-        # check config python is 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,
-            )
-            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,
-            )
-            sys.exit(1)
-
-        if build_options.before_build:
-            log.step("Running before_build...")
-            before_build_prepared = prepare_command(
-                build_options.before_build,
-                project=container_project_path,
-                package=container_package_dir,
-            )
-            docker.call(["sh", "-c", before_build_prepared], env=env)
-
-        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])
-
-        verbosity_flags = get_build_verbosity_extra_flags(build_options.build_verbosity)
-
-        if build_options.build_frontend == "pip":
-            docker.call(
-                [
-                    "python",
-                    "-m",
-                    "pip",
-                    "wheel",
-                    container_package_dir,
-                    f"--wheel-dir={built_wheel_dir}",
-                    "--no-deps",
-                    *verbosity_flags,
-                ],
-                env=env,
-            )
-        elif build_options.build_frontend == "build":
-            config_setting = " ".join(verbosity_flags)
-            docker.call(
-                [
-                    "python",
-                    "-m",
-                    "build",
-                    container_package_dir,
-                    "--wheel",
-                    f"--outdir={built_wheel_dir}",
-                    f"--config-setting={config_setting}",
-                ],
-                env=env,
-            )
-        else:
-            assert_never(build_options.build_frontend)
-
-        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])
-
-        if built_wheel.name.endswith("none-any.whl"):
-            raise NonPlatformWheelError()
-
-        if build_options.repair_command:
-            log.step("Repairing wheel...")
-            repair_command_prepared = prepare_command(
-                build_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])
-
-        repaired_wheels = docker.glob(repaired_wheel_dir, "*.whl")
-
-        if build_options.test_command and build_options.test_selector(config.identifier):
-            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(["python", "-m", "virtualenv", "--no-download", venv_dir], env=env)
-
-            virtualenv_env = env.copy()
-            virtualenv_env["PATH"] = f"{venv_dir / 'bin'}:{virtualenv_env['PATH']}"
-
-            if build_options.before_test:
-                before_test_prepared = prepare_command(
-                    build_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
-            # conforms to multiple manylinux standards. These multiple versions of the wheel are
-            # functionally the same, differing only in name, wheel metadata, and possibly include
-            # 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) + build_options.test_extras],
-                env=virtualenv_env,
-            )
-
-            # Install any requirements to run the tests
-            if build_options.test_requires:
-                docker.call(["pip", "install", *build_options.test_requires], env=virtualenv_env)
-
-            # Run the tests from a different directory
-            test_command_prepared = prepare_command(
-                build_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])
-
-        # move repaired wheels to output
-        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...")
-    # copy the output back into the host
-    docker.copy_out(container_output_dir, options.globals.output_dir)
-    log.step_end()
-
-
-def build(options: Options) -> None:
+def build(options: BuildOptions) -> None:
    try:
        # check docker is installed
        subprocess.run(["docker", "--version"], check=True, stdout=subprocess.DEVNULL)
@@ -317,66 +61,259 @@ def build(options: Options) -> None:
        )
        sys.exit(2)

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

    cwd = Path.cwd()
-    abs_package_dir = options.globals.package_dir.resolve()
+    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")

    container_project_path = PurePath("/project")
    container_package_dir = container_project_path / abs_package_dir.relative_to(cwd)
+    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)
+        ]
+        if not platform_configs:
+            continue

-    for build_step in get_build_steps(options, python_configurations):
        try:
-            ids_to_build = [x.identifier for x in build_step.platform_configs]
-            log.step(
-                f"Starting Docker image {build_step.docker_image} for {', '.join(ids_to_build)}..."
-            )
-
+            log.step(f"Starting Docker image {docker_image}...")
            with DockerContainer(
-                docker_image=build_step.docker_image,
-                simulate_32_bit=build_step.platform_tag.endswith("i686"),
+                docker_image,
+                simulate_32_bit=platform_tag.endswith("i686"),
                cwd=container_project_path,
            ) as docker:

-                build_on_docker(
-                    options=options,
-                    platform_configs=build_step.platform_configs,
-                    docker=docker,
-                    container_project_path=container_project_path,
-                    container_package_dir=container_package_dir,
-                )
+                log.step("Copying project into Docker...")
+                docker.copy_into(Path.cwd(), container_project_path)

+                if options.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
+                    )
+
+                    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)
+
+                    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")
+                        docker.copy_into(patch_path, patch_docker_path)
+                        try:
+                            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")
+
+                        docker.copy_into(constraints_file, container_constraints_file)
+                        dependency_constraint_flags = ["-c", container_constraints_file]
+
+                    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"]}'
+
+                    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,
+                        )
+                        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,
+                        )
+                        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("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])
+
+                    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]
+
+                    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"):
+                        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)
+                    else:
+                        docker.call(["mv", built_wheel, repaired_wheel_dir])
+
+                    repaired_wheels = docker.glob(repaired_wheel_dir, "*.whl")
+
+                    if options.test_command and options.test_selector(config.identifier):
+                        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(
+                            ["python", "-m", "virtualenv", "--no-download", venv_dir], env=env
+                        )
+
+                        virtualenv_env = env.copy()
+                        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)
+
+                        # Install the wheel we just built
+                        # Note: If auditwheel produced two wheels, it's because the earlier produced wheel
+                        # conforms to multiple manylinux standards. These multiple versions of the wheel are
+                        # functionally the same, differing only in name, wheel metadata, and possibly include
+                        # 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,
+                        )
+
+                        # Install any requirements to run the tests
+                        if options.test_requires:
+                            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
+                        )
+
+                        # clean up test environment
+                        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])
+
+                    log.build_end()
+
+                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}"
            )
-            troubleshoot(options, error)
+            troubleshoot(options.package_dir, error)
            sys.exit(1)


-def _matches_prepared_command(error_cmd: List[str], command_template: str) -> bool:
-    if len(error_cmd) < 3 or error_cmd[0:2] != ["sh", "-c"]:
-        return False
-    command_prefix = command_template.split("{", maxsplit=1)[0].strip()
-    return error_cmd[2].startswith(command_prefix)
-
-
-def troubleshoot(options: Options, error: Exception) -> None:
-
-    if isinstance(error, subprocess.CalledProcessError) and (
-        error.cmd[0:4] == ["python", "-m", "pip", "wheel"]
-        or error.cmd[0:3] == ["python", "-m", "build"]
-        or _matches_prepared_command(
-            error.cmd, options.build_options(None).repair_command
-        )  # TODO allow matching of overrides too?
-    ):
-        # the wheel build step or the repair step failed
+def troubleshoot(package_dir: Path, error: Exception) -> None:
+    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(options.globals.package_dir.glob("**/*.so"))
+        so_files = list(package_dir.glob("**/*.so"))

        if so_files:
            print(
@@ -385,17 +322,10 @@ def troubleshoot(options: Options, error: Exception) -> None:
                    NOTE: Shared object (.so) files found in this project.

                    These files might be built against the wrong OS, causing problems with
-                    auditwheel. If possible, run cibuildwheel in a clean checkout.
+                    auditwheel.

                    If you're using Cython and have previously done an in-place build,
                    remove those build files (*.so and *.c) before starting cibuildwheel.
-
-                    setuptools uses the build/ folder to store its build cache. It
-                    may be necessary to remove those build files (*.so and *.o) before
-                    starting cibuildwheel.
-
-                    Files that belong to a virtual environment are probably not an issue
-                    unless you used a custom command telling cibuildwheel to activate it.
                    """
                ),
                file=sys.stderr,
@@ -20,11 +20,6 @@ PLATFORM_IDENTIFIER_DESCIPTIONS = {
    "manylinux_aarch64": "manylinux aarch64",
    "manylinux_ppc64le": "manylinux ppc64le",
    "manylinux_s390x": "manylinux s390x",
-    "musllinux_x86_64": "musllinux x86_64",
-    "musllinux_i686": "musllinux i686",
-    "musllinux_aarch64": "musllinux aarch64",
-    "musllinux_ppc64le": "musllinux ppc64le",
-    "musllinux_s390x": "manylinux s390x",
    "win32": "Windows 32bit",
    "win_amd64": "Windows 64bit",
    "macosx_x86_64": "macOS x86_64",
@@ -191,7 +186,7 @@ def build_description_from_identifier(identifier: str) -> str:
    build_description = ""

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

    if python_interpreter == "cp":
        build_description += "CPython"
@@ -200,7 +195,7 @@ def build_description_from_identifier(identifier: str) -> str:
    else:
        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]
@@ -12,18 +12,18 @@ from typing import Any, Dict, List, NamedTuple, Optional, Sequence, Set, Tuple,
 from .architecture import Architecture
 from .environment import ParsedEnvironment
 from .logger import log
-from .options import Options
-from .typing import Literal, PathOrStr, assert_never
+from .typing import Literal, PathOrStr
 from .util import (
-    BuildFrontend,
+    BuildOptions,
    BuildSelector,
    NonPlatformWheelError,
    download,
    get_build_verbosity_extra_flags,
-    get_pip_version,
+    get_pip_script,
    install_certifi_script,
    prepare_command,
    read_python_configs,
+    resources_dir,
    unwrap,
 )

@@ -90,7 +90,43 @@ def get_python_configurations(
    ]

    # skip builds as required by BUILD/SKIP
-    return [c for c in python_configurations if build_selector(c.identifier)]
+    python_configurations = [c for c in python_configurations if build_selector(c.identifier)]
+
+    # 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):
+            # 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")
+            ]
+
+        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")
+            ]
+
+    return python_configurations


 SYMLINKS_DIR = Path("/tmp/cibw_bin")
@@ -120,7 +156,7 @@ def install_cpython(version: str, url: str) -> Path:

    # 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"
+    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:
@@ -128,9 +164,24 @@ def install_cpython(version: str, url: str) -> Path:
        download(url, Path("/tmp/Python.pkg"))
        # install
        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",
+                ]
+            )
+
        call(["sudo", str(installation_bin_path / python_executable), str(install_certifi_script)])

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

    return installation_bin_path
@@ -146,10 +197,14 @@ def install_pypy(version: str, url: str) -> Path:
        downloaded_tar_bz2 = Path("/tmp") / pypy_tar_bz2
        download(url, 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])

    installation_bin_path = installation_path / "bin"
-    python_executable = "pypy3"
-    pip_executable = "pip3"
+    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
@@ -159,9 +214,7 @@ def setup_python(
    python_configuration: PythonConfiguration,
    dependency_constraint_flags: Sequence[PathOrStr],
    environment: ParsedEnvironment,
-    build_frontend: BuildFrontend,
 ) -> Dict[str, str]:
-
    implementation_id = python_configuration.identifier.split("-")[0]
    log.step(f"Installing Python {implementation_id}...")

@@ -210,29 +263,8 @@ def setup_python(
        )
        sys.exit(1)

-    # Install pip
-
-    requires_reinstall = not (installation_bin_path / "pip").exists()
-    if requires_reinstall:
-        # maybe pip isn't installed at all. ensurepip resolves that.
-        call(["python", "-m", "ensurepip"], env=env, cwd="/tmp")
-
-    # upgrade pip to the version matching our constraints
-    # if necessary, reinstall it to ensure that it's available on PATH as 'pip'
-    call(
-        [
-            "python",
-            "-m",
-            "pip",
-            "install",
-            "--force-reinstall" if requires_reinstall else "--upgrade",
-            "pip",
-            *dependency_constraint_flags,
-        ],
-        env=env,
-        cwd="/tmp",
-    )
-
+    # 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)
@@ -247,26 +279,36 @@ def setup_python(
        sys.exit(1)

    # Set MACOSX_DEPLOYMENT_TARGET to 10.9, if the user didn't set it.
-    # PyPy defaults to 10.7, causing inconsistencies if it's left unset.
+    # 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")

    config_is_arm64 = python_configuration.identifier.endswith("arm64")
    config_is_universal2 = python_configuration.identifier.endswith("universal2")

-    if python_configuration.version not in {"3.6", "3.7"}:
-        if config_is_arm64:
+    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")
+        # https://github.com/python/cpython/blob/a5ed2fe0eedefa1649aa93ee74a0bafc8e628a10/Lib/_osx_support.py#L260
+        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 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 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 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")

    building_arm64 = config_is_arm64 or config_is_universal2
    if building_arm64 and get_macos_version() < (10, 16) and "SDKROOT" not in env:
@@ -291,84 +333,60 @@ def setup_python(
            env.setdefault("SDKROOT", arm64_compatible_sdks[0])

    log.step("Installing build tools...")
-    if build_frontend == "pip":
-        call(
-            [
-                "pip",
-                "install",
-                "--upgrade",
-                "setuptools",
-                "wheel",
-                "delocate",
-                *dependency_constraint_flags,
-            ],
-            env=env,
-        )
-    elif build_frontend == "build":
-        call(
-            [
-                "pip",
-                "install",
-                "--upgrade",
-                "delocate",
-                "build[virtualenv]",
-                *dependency_constraint_flags,
-            ],
-            env=env,
-        )
-    else:
-        assert_never(build_frontend)
+    call(
+        [
+            "pip",
+            "install",
+            "--upgrade",
+            "setuptools",
+            "wheel",
+            "delocate",
+            *dependency_constraint_flags,
+        ],
+        env=env,
+    )

    return env


-def build(options: Options) -> None:
+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"

-    python_configurations = get_python_configurations(
-        options.globals.build_selector, options.globals.architectures
-    )
-
    try:
-        before_all_options_identifier = python_configurations[0].identifier
-        before_all_options = options.build_options(before_all_options_identifier)
-
-        if before_all_options.before_all:
+        if options.before_all:
            log.step("Running before_all...")
-            env = before_all_options.environment.as_dictionary(prev_environment=os.environ)
+            env = options.environment.as_dictionary(prev_environment=os.environ)
            env.setdefault("MACOSX_DEPLOYMENT_TARGET", "10.9")
            before_all_prepared = prepare_command(
-                before_all_options.before_all, project=".", package=before_all_options.package_dir
+                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
+        )
+
        for config in python_configurations:
-            build_options = options.build_options(config.identifier)
            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 build_options.dependency_constraints:
+            if options.dependency_constraints:
                dependency_constraint_flags = [
                    "-c",
-                    build_options.dependency_constraints.get_for_python_version(config.version),
+                    options.dependency_constraints.get_for_python_version(config.version),
                ]

-            env = setup_python(
-                config,
-                dependency_constraint_flags,
-                build_options.environment,
-                build_options.build_frontend,
-            )
+            env = setup_python(config, dependency_constraint_flags, options.environment)

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

@@ -377,47 +395,20 @@ def build(options: Options) -> None:
                shutil.rmtree(built_wheel_dir)
            built_wheel_dir.mkdir(parents=True)

-            verbosity_flags = get_build_verbosity_extra_flags(build_options.build_verbosity)
-
-            if build_options.build_frontend == "pip":
-                # Path.resolve() is needed. Without it pip wheel may try to fetch package from pypi.org
-                # see https://github.com/pypa/cibuildwheel/pull/369
-                call(
-                    [
-                        "python",
-                        "-m",
-                        "pip",
-                        "wheel",
-                        build_options.package_dir.resolve(),
-                        f"--wheel-dir={built_wheel_dir}",
-                        "--no-deps",
-                        *verbosity_flags,
-                    ],
-                    env=env,
-                )
-            elif build_options.build_frontend == "build":
-                config_setting = " ".join(verbosity_flags)
-                build_env = env.copy()
-                if build_options.dependency_constraints:
-                    constr = build_options.dependency_constraints.get_for_python_version(
-                        config.version
-                    )
-                    build_env["PIP_CONSTRAINT"] = constr.as_uri()
-                build_env["VIRTUALENV_PIP"] = get_pip_version(env)
-                call(
-                    [
-                        "python",
-                        "-m",
-                        "build",
-                        build_options.package_dir,
-                        "--wheel",
-                        f"--outdir={built_wheel_dir}",
-                        f"--config-setting={config_setting}",
-                    ],
-                    env=build_env,
-                )
-            else:
-                assert_never(build_options.build_frontend)
+            # Path.resolve() is needed. Without it pip wheel may try to fetch package from pypi.org
+            # 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"))

@@ -428,7 +419,7 @@ def build(options: Options) -> None:
            if built_wheel.name.endswith("none-any.whl"):
                raise NonPlatformWheelError()

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

                if config_is_universal2:
@@ -439,7 +430,7 @@ def build(options: Options) -> None:
                    delocate_archs = "x86_64"

                repair_command_prepared = prepare_command(
-                    build_options.repair_command,
+                    options.repair_command,
                    wheel=built_wheel,
                    dest_dir=repaired_wheel_dir,
                    delocate_archs=delocate_archs,
@@ -452,7 +443,7 @@ def build(options: Options) -> None:

            log.step_end()

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

@@ -466,7 +457,7 @@ def build(options: Options) -> None:
                for testing_arch in testing_archs:
                    if config_is_universal2:
                        arch_specific_identifier = f"{config.identifier}:{testing_arch}"
-                        if not build_options.test_selector(arch_specific_identifier):
+                        if not options.test_selector(arch_specific_identifier):
                            continue

                    if machine_arch == "x86_64" and testing_arch == "arm64":
@@ -547,33 +538,31 @@ def build(options: Options) -> None:
                    # check that we are using the Python from the virtual environment
                    call_with_arch(["which", "python"], env=virtualenv_env)

-                    if build_options.before_test:
+                    if options.before_test:
                        before_test_prepared = prepare_command(
-                            build_options.before_test,
-                            project=".",
-                            package=build_options.package_dir,
+                            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", f"{repaired_wheel}{build_options.test_extras}"],
+                        ["pip", "install", f"{repaired_wheel}{options.test_extras}"],
                        env=virtualenv_env,
                    )

                    # test the wheel
-                    if build_options.test_requires:
+                    if options.test_requires:
                        call_with_arch(
-                            ["pip", "install"] + build_options.test_requires, env=virtualenv_env
+                            ["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(
-                        build_options.test_command,
+                        options.test_command,
                        project=Path(".").resolve(),
-                        package=build_options.package_dir.resolve(),
+                        package=options.package_dir.resolve(),
                    )
                    call_with_arch(
                        test_command_prepared,
@@ -586,7 +575,7 @@ def build(options: Options) -> None:
                    shutil.rmtree(venv_dir)

            # we're all done here; move it to output (overwrite existing)
-            shutil.move(str(repaired_wheel), build_options.output_dir)
+            shutil.move(str(repaired_wheel), options.output_dir)
            log.build_end()
    except subprocess.CalledProcessError as error:
        log.step_end_with_error(
@@ -1,594 +0,0 @@
-import os
-import sys
-import traceback
-from configparser import ConfigParser
-from contextlib import contextmanager
-from pathlib import Path
-from typing import (
-    Any,
-    Dict,
-    Iterator,
-    List,
-    Mapping,
-    NamedTuple,
-    Optional,
-    Set,
-    Tuple,
-    Union,
-)
-
-import tomli
-from packaging.specifiers import SpecifierSet
-
-from .architecture import Architecture
-from .environment import EnvironmentParseError, ParsedEnvironment, parse_environment
-from .projectfiles import get_requires_python_str
-from .typing import PLATFORMS, Literal, PlatformName, TypedDict
-from .util import (
-    MANYLINUX_ARCHS,
-    MUSLLINUX_ARCHS,
-    BuildFrontend,
-    BuildSelector,
-    DependencyConstraints,
-    TestSelector,
-    resources_dir,
-    selector_matches,
-    strtobool,
-    unwrap,
-)
-
-
-class CommandLineArguments:
-    platform: Literal["auto", "linux", "macos", "windows"]
-    archs: Optional[str]
-    output_dir: Optional[str]
-    config_file: Optional[str]
-    package_dir: str
-    print_build_identifiers: bool
-    allow_empty: bool
-    prerelease_pythons: bool
-
-
-class GlobalOptions(NamedTuple):
-    package_dir: Path
-    output_dir: Path
-    build_selector: BuildSelector
-    test_selector: TestSelector
-    architectures: Set[Architecture]
-
-
-class BuildOptions(NamedTuple):
-    globals: GlobalOptions
-    environment: ParsedEnvironment
-    before_all: str
-    before_build: Optional[str]
-    repair_command: str
-    manylinux_images: Optional[Dict[str, str]]
-    musllinux_images: Optional[Dict[str, str]]
-    dependency_constraints: Optional[DependencyConstraints]
-    test_command: Optional[str]
-    before_test: Optional[str]
-    test_requires: List[str]
-    test_extras: str
-    build_verbosity: int
-    build_frontend: BuildFrontend
-
-    @property
-    def package_dir(self) -> Path:
-        return self.globals.package_dir
-
-    @property
-    def output_dir(self) -> Path:
-        return self.globals.output_dir
-
-    @property
-    def build_selector(self) -> BuildSelector:
-        return self.globals.build_selector
-
-    @property
-    def test_selector(self) -> TestSelector:
-        return self.globals.test_selector
-
-    @property
-    def architectures(self) -> Set[Architecture]:
-        return self.globals.architectures
-
-
-Setting = Union[Dict[str, str], List[str], str]
-
-
-class Override(NamedTuple):
-    select_pattern: str
-    options: Dict[str, Setting]
-
-
-MANYLINUX_OPTIONS = {f"manylinux-{build_platform}-image" for build_platform in MANYLINUX_ARCHS}
-MUSLLINUX_OPTIONS = {f"musllinux-{build_platform}-image" for build_platform in MUSLLINUX_ARCHS}
-DISALLOWED_OPTIONS = {
-    "linux": {"dependency-versions"},
-    "macos": MANYLINUX_OPTIONS | MUSLLINUX_OPTIONS,
-    "windows": MANYLINUX_OPTIONS | MUSLLINUX_OPTIONS,
-}
-
-
-class TableFmt(TypedDict):
-    item: str
-    sep: str
-
-
-class ConfigOptionError(KeyError):
-    pass
-
-
-def _dig_first(*pairs: Tuple[Mapping[str, Setting], str], ignore_empty: bool = False) -> Setting:
-    """
-    Return the first dict item that matches from pairs of dicts and keys.
-    Will throw a KeyError if missing.
-
-    _dig_first((dict1, "key1"), (dict2, "key2"), ...)
-    """
-    if not pairs:
-        raise ValueError("pairs cannot be empty")
-
-    for dict_like, key in pairs:
-        if key in dict_like:
-            value = dict_like[key]
-
-            if ignore_empty and value == "":
-                continue
-
-            return value
-
-    raise KeyError(key)
-
-
-class OptionsReader:
-    """
-    Gets options from the environment, config or defaults, optionally scoped
-    by the platform.
-
-    Example:
-      >>> options_reader = OptionsReader(config_file, platform='macos')
-      >>> options_reader.get('cool-color')
-
-      This will return the value of CIBW_COOL_COLOR_MACOS if it exists,
-      otherwise the value of CIBW_COOL_COLOR, otherwise
-      'tool.cibuildwheel.macos.cool-color' or 'tool.cibuildwheel.cool-color'
-      from `config_file`, or from cibuildwheel/resources/defaults.toml. An
-      error is thrown if there are any unexpected keys or sections in
-      tool.cibuildwheel.
-    """
-
-    def __init__(
-        self,
-        config_file_path: Optional[Path] = None,
-        *,
-        platform: PlatformName,
-        disallow: Optional[Dict[str, Set[str]]] = None,
-    ) -> None:
-        self.platform = platform
-        self.disallow = disallow or {}
-
-        # Open defaults.toml, loading both global and platform sections
-        defaults_path = resources_dir / "defaults.toml"
-        self.default_options, self.default_platform_options = self._load_file(defaults_path)
-
-        # Load the project config file
-        config_options: Dict[str, Any] = {}
-        config_platform_options: Dict[str, Any] = {}
-
-        if config_file_path is not None:
-            config_options, config_platform_options = self._load_file(config_file_path)
-
-        # Validate project config
-        for option_name in config_options:
-            if not self._is_valid_global_option(option_name):
-                raise ConfigOptionError(f'Option "{option_name}" not supported in a config file')
-
-        for option_name in config_platform_options:
-            if not self._is_valid_platform_option(option_name):
-                raise ConfigOptionError(
-                    f'Option "{option_name}" not supported in the "{self.platform}" section'
-                )
-
-        self.config_options = config_options
-        self.config_platform_options = config_platform_options
-
-        self.overrides: List[Override] = []
-        self.current_identifier: Optional[str] = None
-
-        config_overrides = self.config_options.get("overrides")
-
-        if config_overrides is not None:
-            if not isinstance(config_overrides, list):
-                raise ConfigOptionError('"tool.cibuildwheel.overrides" must be a list')
-
-            for config_override in config_overrides:
-                select = config_override.pop("select", None)
-
-                if not select:
-                    raise ConfigOptionError('"select" must be set in an override')
-
-                if isinstance(select, list):
-                    select = " ".join(select)
-
-                self.overrides.append(Override(select, config_override))
-
-    def _is_valid_global_option(self, name: str) -> bool:
-        """
-        Returns True if an option with this name is allowed in the
-        [tool.cibuildwheel] section of a config file.
-        """
-        allowed_option_names = self.default_options.keys() | PLATFORMS | {"overrides"}
-
-        return name in allowed_option_names
-
-    def _is_valid_platform_option(self, name: str) -> bool:
-        """
-        Returns True if an option with this name is allowed in the
-        [tool.cibuildwheel.<current-platform>] section of a config file.
-        """
-        disallowed_platform_options = self.disallow.get(self.platform, set())
-        if name in disallowed_platform_options:
-            return False
-
-        allowed_option_names = self.default_options.keys() | self.default_platform_options.keys()
-
-        return name in allowed_option_names
-
-    def _load_file(self, filename: Path) -> Tuple[Dict[str, Any], Dict[str, Any]]:
-        """
-        Load a toml file, returns global and platform as separate dicts.
-        """
-        with filename.open("rb") as f:
-            config = tomli.load(f)
-
-        global_options = config.get("tool", {}).get("cibuildwheel", {})
-        platform_options = global_options.get(self.platform, {})
-
-        return global_options, platform_options
-
-    @property
-    def active_config_overrides(self) -> List[Override]:
-        if self.current_identifier is None:
-            return []
-        return [
-            o for o in self.overrides if selector_matches(o.select_pattern, self.current_identifier)
-        ]
-
-    @contextmanager
-    def identifier(self, identifier: Optional[str]) -> Iterator[None]:
-        self.current_identifier = identifier
-        try:
-            yield
-        finally:
-            self.current_identifier = None
-
-    def get(
-        self,
-        name: str,
-        *,
-        env_plat: bool = True,
-        sep: Optional[str] = None,
-        table: Optional[TableFmt] = None,
-        ignore_empty: bool = False,
-    ) -> str:
-        """
-        Get and return the value for the named option from environment,
-        configuration file, or the default. If env_plat is False, then don't
-        accept platform versions of the environment variable. If this is an
-        array it will be merged with "sep" before returning. If it is a table,
-        it will be formatted with "table['item']" using {k} and {v} and merged
-        with "table['sep']". Empty variables will not override if ignore_empty
-        is True.
-        """
-
-        if name not in self.default_options and name not in self.default_platform_options:
-            raise ConfigOptionError(f"{name} must be in cibuildwheel/resources/defaults.toml file")
-
-        # Environment variable form
-        envvar = f"CIBW_{name.upper().replace('-', '_')}"
-        plat_envvar = f"{envvar}_{self.platform.upper()}"
-
-        # later overrides take precedence over earlier ones, so reverse the list
-        active_config_overrides = reversed(self.active_config_overrides)
-
-        # get the option from the environment, then the config file, then finally the default.
-        # platform-specific options are preferred, if they're allowed.
-        result = _dig_first(
-            (os.environ if env_plat else {}, plat_envvar),  # type: ignore[arg-type]
-            (os.environ, envvar),
-            *[(o.options, name) for o in active_config_overrides],
-            (self.config_platform_options, name),
-            (self.config_options, name),
-            (self.default_platform_options, name),
-            (self.default_options, name),
-            ignore_empty=ignore_empty,
-        )
-
-        if isinstance(result, dict):
-            if table is None:
-                raise ConfigOptionError(f"{name} does not accept a table")
-            return table["sep"].join(table["item"].format(k=k, v=v) for k, v in result.items())
-        elif isinstance(result, list):
-            if sep is None:
-                raise ConfigOptionError(f"{name} does not accept a list")
-            return sep.join(result)
-        elif isinstance(result, int):
-            return str(result)
-        else:
-            return result
-
-
-class Options:
-    def __init__(self, platform: PlatformName, command_line_arguments: CommandLineArguments):
-        self.platform = platform
-        self.command_line_arguments = command_line_arguments
-
-        self.reader = OptionsReader(
-            self.config_file_path,
-            platform=platform,
-            disallow=DISALLOWED_OPTIONS,
-        )
-
-    @property
-    def config_file_path(self) -> Optional[Path]:
-        args = self.command_line_arguments
-
-        if args.config_file is not None:
-            return Path(args.config_file.format(package=args.package_dir))
-        # return pyproject.toml, if it's available
-        pyproject_toml_path = Path(args.package_dir) / "pyproject.toml"
-        if pyproject_toml_path.exists():
-            return pyproject_toml_path
-
-        return None
-
-    @property
-    def package_requires_python_str(self) -> Optional[str]:
-        if not hasattr(self, "_package_requires_python_str"):
-            args = self.command_line_arguments
-            self._package_requires_python_str = get_requires_python_str(Path(args.package_dir))
-        return self._package_requires_python_str
-
-    @property
-    def globals(self) -> GlobalOptions:
-        args = self.command_line_arguments
-        package_dir = Path(args.package_dir)
-        output_dir = Path(
-            args.output_dir
-            if args.output_dir is not None
-            else os.environ.get("CIBW_OUTPUT_DIR", "wheelhouse")
-        )
-
-        build_config = self.reader.get("build", env_plat=False, sep=" ") or "*"
-        skip_config = self.reader.get("skip", env_plat=False, sep=" ")
-        test_skip = self.reader.get("test-skip", env_plat=False, sep=" ")
-
-        prerelease_pythons = args.prerelease_pythons or strtobool(
-            os.environ.get("CIBW_PRERELEASE_PYTHONS", "0")
-        )
-
-        # This is not supported in tool.cibuildwheel, as it comes from a standard location.
-        # 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 self.package_requires_python_str
-        )
-        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,
-            prerelease_pythons=prerelease_pythons,
-        )
-        test_selector = TestSelector(skip_config=test_skip)
-
-        archs_config_str = args.archs or self.reader.get("archs", sep=" ")
-        architectures = Architecture.parse_config(archs_config_str, platform=self.platform)
-
-        return GlobalOptions(
-            package_dir=package_dir,
-            output_dir=output_dir,
-            build_selector=build_selector,
-            test_selector=test_selector,
-            architectures=architectures,
-        )
-
-    def build_options(self, identifier: Optional[str]) -> BuildOptions:
-        """
-        Compute BuildOptions for a single run configuration.
-        """
-
-        with self.reader.identifier(identifier):
-            before_all = self.reader.get("before-all", sep=" && ")
-
-            build_frontend_str = self.reader.get("build-frontend", env_plat=False)
-            environment_config = self.reader.get(
-                "environment", table={"item": '{k}="{v}"', "sep": " "}
-            )
-            before_build = self.reader.get("before-build", sep=" && ")
-            repair_command = self.reader.get("repair-wheel-command", sep=" && ")
-
-            dependency_versions = self.reader.get("dependency-versions")
-            test_command = self.reader.get("test-command", sep=" && ")
-            before_test = self.reader.get("before-test", sep=" && ")
-            test_requires = self.reader.get("test-requires", sep=" ").split()
-            test_extras = self.reader.get("test-extras", sep=",")
-            build_verbosity_str = self.reader.get("build-verbosity")
-
-            build_frontend: BuildFrontend
-            if build_frontend_str == "build":
-                build_frontend = "build"
-            elif build_frontend_str == "pip":
-                build_frontend = "pip"
-            else:
-                msg = f"cibuildwheel: Unrecognised build frontend '{build_frontend_str}', only 'pip' and 'build' are supported"
-                print(msg, file=sys.stderr)
-                sys.exit(2)
-
-            try:
-                environment = parse_environment(environment_config)
-            except (EnvironmentParseError, ValueError):
-                print(
-                    f'cibuildwheel: Malformed environment option "{environment_config}"',
-                    file=sys.stderr,
-                )
-                traceback.print_exc(None, sys.stderr)
-                sys.exit(2)
-
-            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}]"
-
-            try:
-                build_verbosity = min(3, max(-3, int(build_verbosity_str)))
-            except ValueError:
-                build_verbosity = 0
-
-            manylinux_images: Dict[str, str] = {}
-            musllinux_images: Dict[str, str] = {}
-            if self.platform == "linux":
-                all_pinned_docker_images = _get_pinned_docker_images()
-
-                for build_platform in MANYLINUX_ARCHS:
-                    pinned_images = all_pinned_docker_images[build_platform]
-
-                    config_value = self.reader.get(
-                        f"manylinux-{build_platform}-image", ignore_empty=True
-                    )
-
-                    if not config_value:
-                        # default to manylinux2010 if it's available, otherwise manylinux2014
-                        image = pinned_images.get("manylinux2010") or pinned_images.get(
-                            "manylinux2014"
-                        )
-                    elif config_value in pinned_images:
-                        image = pinned_images[config_value]
-                    else:
-                        image = config_value
-
-                    assert image is not None
-                    manylinux_images[build_platform] = image
-
-                for build_platform in MUSLLINUX_ARCHS:
-                    pinned_images = all_pinned_docker_images[build_platform]
-
-                    config_value = self.reader.get(f"musllinux-{build_platform}-image")
-
-                    if config_value is None:
-                        image = pinned_images["musllinux_1_1"]
-                    elif config_value in pinned_images:
-                        image = pinned_images[config_value]
-                    else:
-                        image = config_value
-
-                    musllinux_images[build_platform] = image
-
-            return BuildOptions(
-                globals=self.globals,
-                test_command=test_command,
-                test_requires=test_requires,
-                test_extras=test_extras,
-                before_test=before_test,
-                before_build=before_build,
-                before_all=before_all,
-                build_verbosity=build_verbosity,
-                repair_command=repair_command,
-                environment=environment,
-                dependency_constraints=dependency_constraints,
-                manylinux_images=manylinux_images or None,
-                musllinux_images=musllinux_images or None,
-                build_frontend=build_frontend,
-            )
-
-    def check_for_invalid_configuration(self, identifiers: List[str]) -> None:
-        if self.platform in ["macos", "windows"]:
-            before_all_values = {self.build_options(i).before_all for i in identifiers}
-
-            if len(before_all_values) > 1:
-                raise ValueError(
-                    unwrap(
-                        f"""
-                        before_all cannot be set to multiple values. On macOS and Windows,
-                        before_all is only run once, at the start of the build. before_all values
-                        are: {before_all_values!r}
-                        """
-                    )
-                )
-
-    def check_for_deprecated_options(self) -> None:
-        build_selector = self.globals.build_selector
-        test_selector = self.globals.test_selector
-
-        deprecated_selectors("CIBW_BUILD", build_selector.build_config, error=True)
-        deprecated_selectors("CIBW_SKIP", build_selector.skip_config)
-        deprecated_selectors("CIBW_TEST_SKIP", test_selector.skip_config)
-
-    def summary(self, identifiers: List[str]) -> str:
-        lines = [
-            f"{option_name}: {option_value!r}"
-            for option_name, option_value in sorted(self.globals._asdict().items())
-        ]
-
-        build_option_defaults = self.build_options(identifier=None)
-
-        for option_name, default_value in sorted(build_option_defaults._asdict().items()):
-            if option_name == "globals":
-                continue
-
-            lines.append(f"{option_name}: {default_value!r}")
-
-            # if any identifiers have an overridden value, print that too
-            for identifier in identifiers:
-                option_value = self.build_options(identifier=identifier)._asdict()[option_name]
-                if option_value != default_value:
-                    lines.append(f"  {identifier}: {option_value!r}")
-
-        return "\n".join(lines)
-
-
-def compute_options(
-    platform: PlatformName,
-    command_line_arguments: CommandLineArguments,
-) -> Options:
-    options = Options(platform=platform, command_line_arguments=command_line_arguments)
-    options.check_for_deprecated_options()
-    return options
-
-
-_all_pinned_docker_images: Optional[ConfigParser] = None
-
-
-def _get_pinned_docker_images() -> Mapping[str, Mapping[str, str]]:
-    """
-    This looks like a dict of dicts, e.g.
-    { 'x86_64': {'manylinux1': '...', 'manylinux2010': '...', 'manylinux2014': '...'},
-      'i686': {'manylinux1': '...', 'manylinux2010': '...', 'manylinux2014': '...'},
-      'pypy_x86_64': {'manylinux2010': '...' }
-      ... }
-    """
-    global _all_pinned_docker_images
-
-    if _all_pinned_docker_images is None:
-        pinned_docker_images_file = resources_dir / "pinned_docker_images.cfg"
-        _all_pinned_docker_images = ConfigParser()
-        _all_pinned_docker_images.read(pinned_docker_images_file)
-    return _all_pinned_docker_images
-
-
-def deprecated_selectors(name: str, selector: str, *, error: bool = False) -> None:
-    if "p2" in selector or "p35" in selector:
-        msg = f"cibuildwheel 2.x no longer supports Python < 3.6. Please use the 1.x series or update {name}"
-        print(msg, file=sys.stderr)
-        if error:
-            sys.exit(4)
@@ -4,7 +4,7 @@ from configparser import ConfigParser
 from pathlib import Path
 from typing import Any, Optional

-import tomli
+import toml

 if sys.version_info < (3, 8):
    Constant = ast.Str
@@ -27,7 +27,7 @@ class Analyzer(ast.NodeVisitor):
    def visit(self, content: ast.AST) -> None:
        for node in ast.walk(content):
            for child in ast.iter_child_nodes(node):
-                child.parent = node  # type: ignore[attr-defined]
+                child.parent = node  # type: ignore
        super().visit(content)

    def visit_keyword(self, node: ast.keyword) -> None:
@@ -35,7 +35,7 @@ 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") and isinstance(  # type: ignore[attr-defined]
+            if not hasattr(node.parent.parent.parent, "parent") and isinstance(  # type: ignore
                node.value, Constant
            ):
                self.requires_python = get_constant(node.value)
@@ -56,8 +56,7 @@ def get_requires_python_str(package_dir: Path) -> Optional[str]:

    # Read in from pyproject.toml:project.requires-python
    try:
-        with (package_dir / "pyproject.toml").open("rb") as f1:
-            info = tomli.load(f1)
+        info = toml.load(package_dir / "pyproject.toml")
        return str(info["project"]["requires-python"])
    except (FileNotFoundError, KeyError, IndexError, TypeError):
        pass
@@ -71,8 +70,8 @@ def get_requires_python_str(package_dir: Path) -> Optional[str]:
        pass

    try:
-        with (package_dir / "setup.py").open() as f2:
-            return setup_py_python_requires(f2.read())
+        with open(package_dir / "setup.py") as f:
+            return setup_py_python_requires(f.read())
    except FileNotFoundError:
        pass

@@ -1,87 +1,69 @@
 [linux]
 python_configurations = [
+  { identifier = "cp27-manylinux_x86_64", version = "2.7", path_str = "/opt/python/cp27-cp27m" },
+  { identifier = "cp27-manylinux_x86_64", version = "2.7", path_str = "/opt/python/cp27-cp27mu" },
+  { identifier = "cp35-manylinux_x86_64", version = "3.5", path_str = "/opt/python/cp35-cp35m" },
  { identifier = "cp36-manylinux_x86_64", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
  { identifier = "cp37-manylinux_x86_64", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
  { identifier = "cp38-manylinux_x86_64", version = "3.8", path_str = "/opt/python/cp38-cp38" },
  { identifier = "cp39-manylinux_x86_64", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-manylinux_x86_64", version = "3.10", path_str = "/opt/python/cp310-cp310" },
+  { identifier = "cp27-manylinux_i686", version = "2.7", path_str = "/opt/python/cp27-cp27m" },
+  { identifier = "cp27-manylinux_i686", version = "2.7", path_str = "/opt/python/cp27-cp27mu" },
+  { identifier = "cp35-manylinux_i686", version = "3.5", path_str = "/opt/python/cp35-cp35m" },
  { identifier = "cp36-manylinux_i686", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
  { identifier = "cp37-manylinux_i686", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
  { identifier = "cp38-manylinux_i686", version = "3.8", path_str = "/opt/python/cp38-cp38" },
  { identifier = "cp39-manylinux_i686", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-manylinux_i686", version = "3.10", path_str = "/opt/python/cp310-cp310" },
+  { identifier = "pp27-manylinux_x86_64", version = "2.7", path_str = "/opt/python/pp27-pypy_73" },
+  { identifier = "pp36-manylinux_x86_64", version = "3.6", path_str = "/opt/python/pp36-pypy36_pp73" },
  { identifier = "pp37-manylinux_x86_64", version = "3.7", path_str = "/opt/python/pp37-pypy37_pp73" },
+  { identifier = "cp35-manylinux_aarch64", version = "3.5", path_str = "/opt/python/cp35-cp35m" },
  { identifier = "cp36-manylinux_aarch64", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
  { identifier = "cp37-manylinux_aarch64", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
  { identifier = "cp38-manylinux_aarch64", version = "3.8", path_str = "/opt/python/cp38-cp38" },
  { identifier = "cp39-manylinux_aarch64", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-manylinux_aarch64", version = "3.10", path_str = "/opt/python/cp310-cp310" },
+  { identifier = "cp35-manylinux_ppc64le", version = "3.5", path_str = "/opt/python/cp35-cp35m" },
  { identifier = "cp36-manylinux_ppc64le", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
  { identifier = "cp37-manylinux_ppc64le", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
  { identifier = "cp38-manylinux_ppc64le", version = "3.8", path_str = "/opt/python/cp38-cp38" },
  { identifier = "cp39-manylinux_ppc64le", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-manylinux_ppc64le", version = "3.10", path_str = "/opt/python/cp310-cp310" },
+  { identifier = "cp35-manylinux_s390x", version = "3.5", path_str = "/opt/python/cp35-cp35m" },
  { identifier = "cp36-manylinux_s390x", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
  { identifier = "cp37-manylinux_s390x", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
  { identifier = "cp38-manylinux_s390x", version = "3.8", path_str = "/opt/python/cp38-cp38" },
  { identifier = "cp39-manylinux_s390x", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-manylinux_s390x", version = "3.10", path_str = "/opt/python/cp310-cp310" },
-  { identifier = "pp37-manylinux_aarch64", version = "3.7", path_str = "/opt/python/pp37-pypy37_pp73" },
-  { identifier = "pp37-manylinux_i686", version = "3.7", path_str = "/opt/python/pp37-pypy37_pp73" },
-  { identifier = "cp36-musllinux_x86_64", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
-  { identifier = "cp37-musllinux_x86_64", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
-  { identifier = "cp38-musllinux_x86_64", version = "3.8", path_str = "/opt/python/cp38-cp38" },
-  { identifier = "cp39-musllinux_x86_64", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-musllinux_x86_64", version = "3.10", path_str = "/opt/python/cp310-cp310" },
-  { identifier = "cp36-musllinux_i686", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
-  { identifier = "cp37-musllinux_i686", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
-  { identifier = "cp38-musllinux_i686", version = "3.8", path_str = "/opt/python/cp38-cp38" },
-  { identifier = "cp39-musllinux_i686", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-musllinux_i686", version = "3.10", path_str = "/opt/python/cp310-cp310" },
-  { identifier = "cp36-musllinux_aarch64", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
-  { identifier = "cp37-musllinux_aarch64", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
-  { identifier = "cp38-musllinux_aarch64", version = "3.8", path_str = "/opt/python/cp38-cp38" },
-  { identifier = "cp39-musllinux_aarch64", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-musllinux_aarch64", version = "3.10", path_str = "/opt/python/cp310-cp310" },
-  { identifier = "cp36-musllinux_ppc64le", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
-  { identifier = "cp37-musllinux_ppc64le", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
-  { identifier = "cp38-musllinux_ppc64le", version = "3.8", path_str = "/opt/python/cp38-cp38" },
-  { identifier = "cp39-musllinux_ppc64le", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-musllinux_ppc64le", version = "3.10", path_str = "/opt/python/cp310-cp310" },
-  { identifier = "cp36-musllinux_s390x", version = "3.6", path_str = "/opt/python/cp36-cp36m" },
-  { identifier = "cp37-musllinux_s390x", version = "3.7", path_str = "/opt/python/cp37-cp37m" },
-  { identifier = "cp38-musllinux_s390x", version = "3.8", path_str = "/opt/python/cp38-cp38" },
-  { identifier = "cp39-musllinux_s390x", version = "3.9", path_str = "/opt/python/cp39-cp39" },
-  { identifier = "cp310-musllinux_s390x", version = "3.10", path_str = "/opt/python/cp310-cp310" },
 ]

 [macos]
 python_configurations = [
+  { identifier = "cp27-macosx_x86_64", version = "2.7", url = "https://www.python.org/ftp/python/2.7.18/python-2.7.18-macosx10.9.pkg" },
+  { 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/3.8.10/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/3.9.7/python-3.9.7-macos11.pkg" },
-  { identifier = "cp39-macosx_arm64", version = "3.9", url = "https://www.python.org/ftp/python/3.9.7/python-3.9.7-macos11.pkg" },
-  { identifier = "cp39-macosx_universal2", version = "3.9", url = "https://www.python.org/ftp/python/3.9.7/python-3.9.7-macos11.pkg" },
-  { identifier = "cp310-macosx_x86_64", version = "3.10", url = "https://www.python.org/ftp/python/3.10.0/python-3.10.0-macos11.pkg" },
-  { identifier = "cp310-macosx_arm64", version = "3.10", url = "https://www.python.org/ftp/python/3.10.0/python-3.10.0-macos11.pkg" },
-  { identifier = "cp310-macosx_universal2", version = "3.10", url = "https://www.python.org/ftp/python/3.10.0/python-3.10.0-macos11.pkg" },
-  { identifier = "pp37-macosx_x86_64", version = "3.7", url = "https://downloads.python.org/pypy/pypy3.7-v7.3.5-osx64.tar.bz2" },
+  { identifier = "cp38-macosx_x86_64", version = "3.8", url = "https://www.python.org/ftp/python/3.8.9/python-3.8.9-macosx10.9.pkg" },
+  { identifier = "cp39-macosx_x86_64", version = "3.9", url = "https://www.python.org/ftp/python/3.9.4/python-3.9.4-macos11.pkg" },
+  { identifier = "cp39-macosx_arm64", version = "3.9", url = "https://www.python.org/ftp/python/3.9.4/python-3.9.4-macos11.pkg" },
+  { identifier = "cp39-macosx_universal2", version = "3.9", url = "https://www.python.org/ftp/python/3.9.4/python-3.9.4-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" },
 ]

 [windows]
 python_configurations = [
+  { identifier = "cp27-win32", version = "2.7.18", arch = "32" },
+  { identifier = "cp27-win_amd64", version = "2.7.18", arch = "64" },
+  { identifier = "cp35-win32", version = "3.5.4", arch = "32" },
+  { identifier = "cp35-win_amd64", version = "3.5.4", arch = "64" },
  { identifier = "cp36-win32", version = "3.6.8", arch = "32" },
  { 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 = "3.8.10", arch = "32" },
-  { identifier = "cp38-win_amd64", version = "3.8.10", arch = "64" },
-  { identifier = "cp39-win32", version = "3.9.7", arch = "32" },
-  { identifier = "cp39-win_amd64", version = "3.9.7", arch = "64" },
-  { identifier = "cp310-win32", version = "3.10.0", arch = "32" },
-  { identifier = "cp310-win_amd64", version = "3.10.0", arch = "64" },
-  { identifier = "pp37-win_amd64", version = "3.7", arch = "64", url = "https://downloads.python.org/pypy/pypy3.7-v7.3.5-win64.zip" },
+  { 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" },
 ]
@@ -0,0 +1,55 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    bin/update_dependencies.py
+#
+appdirs==1.4.4
+    # via virtualenv
+configparser==4.0.2
+    # via importlib-metadata
+contextlib2==0.6.0.post1
+    # via
+    #   importlib-metadata
+    #   importlib-resources
+delocate==0.8.2
+    # via -r cibuildwheel/resources/constraints.in
+distlib==0.3.1
+    # via virtualenv
+filelock==3.0.12
+    # via virtualenv
+importlib-metadata==2.1.1
+    # via virtualenv
+importlib-resources==3.3.1
+    # via virtualenv
+pathlib2==2.3.5
+    # via
+    #   importlib-metadata
+    #   importlib-resources
+    #   virtualenv
+scandir==1.10.0
+    # via pathlib2
+singledispatch==3.6.1
+    # via importlib-resources
+six==1.15.0
+    # via
+    #   pathlib2
+    #   virtualenv
+typing==3.7.4.3
+    # via importlib-resources
+virtualenv==20.4.3
+    # via -r cibuildwheel/resources/constraints.in
+wheel==0.36.2
+    # via
+    #   -r cibuildwheel/resources/constraints.in
+    #   delocate
+zipp==1.2.0
+    # via
+    #   importlib-metadata
+    #   importlib-resources
+
+# The following packages are considered to be unsafe in a requirements file:
+pip==20.3.4
+    # via -r cibuildwheel/resources/constraints.in
+setuptools==44.1.1
+    # via -r cibuildwheel/resources/constraints.in
@@ -0,0 +1,36 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    bin/update_dependencies.py
+#
+appdirs==1.4.4
+    # via virtualenv
+delocate==0.8.2
+    # via -r cibuildwheel/resources/constraints.in
+distlib==0.3.1
+    # via virtualenv
+filelock==3.0.12
+    # via virtualenv
+importlib-metadata==2.1.1
+    # via virtualenv
+importlib-resources==3.2.1
+    # via virtualenv
+six==1.15.0
+    # via virtualenv
+virtualenv==20.4.3
+    # via -r cibuildwheel/resources/constraints.in
+wheel==0.36.2
+    # via
+    #   -r cibuildwheel/resources/constraints.in
+    #   delocate
+zipp==1.2.0
+    # via
+    #   importlib-metadata
+    #   importlib-resources
+
+# The following packages are considered to be unsafe in a requirements file:
+pip==20.3.4
+    # via -r cibuildwheel/resources/constraints.in
+setuptools==50.3.2
+    # via -r cibuildwheel/resources/constraints.in
@@ -1,44 +1,38 @@
 #
-# This file is autogenerated by pip-compile with python 3.6
+# This file is autogenerated by pip-compile
 # To update, run:
 #
 #    bin/update_dependencies.py
 #
-backports.entry-points-selectable==1.1.0
+appdirs==1.4.4
    # via virtualenv
-delocate==0.10.0
+delocate==0.8.2
    # via -r cibuildwheel/resources/constraints.in
-distlib==0.3.3
+distlib==0.3.1
    # via virtualenv
-filelock==3.3.0
+filelock==3.0.12
    # via virtualenv
-importlib-metadata==4.8.1
-    # via
-    #   backports.entry-points-selectable
-    #   virtualenv
-importlib-resources==5.2.2
+importlib-metadata==3.10.0
    # via virtualenv
-platformdirs==2.4.0
+importlib-resources==5.1.2
    # via virtualenv
-six==1.16.0
+six==1.15.0
    # via virtualenv
-typing-extensions==3.10.0.2
-    # via
-    #   delocate
-    #   importlib-metadata
-virtualenv==20.8.1
+typing-extensions==3.7.4.3
+    # via importlib-metadata
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
-wheel==0.37.0
+wheel==0.36.2
    # via
    #   -r cibuildwheel/resources/constraints.in
    #   delocate
-zipp==3.6.0
+zipp==3.4.1
    # via
    #   importlib-metadata
    #   importlib-resources

 # The following packages are considered to be unsafe in a requirements file:
-pip==21.2.4
+pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==58.2.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -1,40 +1,34 @@
 #
-# This file is autogenerated by pip-compile with python 3.7
+# This file is autogenerated by pip-compile
 # To update, run:
 #
 #    bin/update_dependencies.py
 #
-backports.entry-points-selectable==1.1.0
+appdirs==1.4.4
    # via virtualenv
-delocate==0.10.0
+delocate==0.8.2
    # via -r cibuildwheel/resources/constraints.in
-distlib==0.3.3
+distlib==0.3.1
    # via virtualenv
-filelock==3.3.0
+filelock==3.0.12
    # via virtualenv
-importlib-metadata==4.8.1
-    # via
-    #   backports.entry-points-selectable
-    #   virtualenv
-platformdirs==2.4.0
+importlib-metadata==3.10.0
    # via virtualenv
-six==1.16.0
+six==1.15.0
    # via virtualenv
-typing-extensions==3.10.0.2
-    # via
-    #   delocate
-    #   importlib-metadata
-virtualenv==20.8.1
+typing-extensions==3.7.4.3
+    # via importlib-metadata
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
-wheel==0.37.0
+wheel==0.36.2
    # via
    #   -r cibuildwheel/resources/constraints.in
    #   delocate
-zipp==3.6.0
+zipp==3.4.1
    # via importlib-metadata

 # The following packages are considered to be unsafe in a requirements file:
-pip==21.2.4
+pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==58.2.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -1,32 +1,28 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
+# This file is autogenerated by pip-compile
 # To update, run:
 #
 #    bin/update_dependencies.py
 #
-backports.entry-points-selectable==1.1.0
+appdirs==1.4.4
    # via virtualenv
-delocate==0.10.0
+delocate==0.8.2
    # via -r cibuildwheel/resources/constraints.in
-distlib==0.3.3
+distlib==0.3.1
    # via virtualenv
-filelock==3.3.0
+filelock==3.0.12
    # via virtualenv
-platformdirs==2.4.0
+six==1.15.0
    # via virtualenv
-six==1.16.0
-    # via virtualenv
-typing-extensions==3.10.0.2
-    # via delocate
-virtualenv==20.8.1
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
-wheel==0.37.0
+wheel==0.36.2
    # via
    #   -r cibuildwheel/resources/constraints.in
    #   delocate

 # The following packages are considered to be unsafe in a requirements file:
-pip==21.2.4
+pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==58.2.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -1,32 +1,28 @@
 #
-# This file is autogenerated by pip-compile with python 3.9
+# This file is autogenerated by pip-compile
 # To update, run:
 #
 #    bin/update_dependencies.py
 #
-backports.entry-points-selectable==1.1.0
+appdirs==1.4.4
    # via virtualenv
-delocate==0.10.0
+delocate==0.8.2
    # via -r cibuildwheel/resources/constraints.in
-distlib==0.3.3
+distlib==0.3.1
    # via virtualenv
-filelock==3.3.0
+filelock==3.0.12
    # via virtualenv
-platformdirs==2.4.0
+six==1.15.0
    # via virtualenv
-six==1.16.0
-    # via virtualenv
-typing-extensions==3.10.0.2
-    # via delocate
-virtualenv==20.8.1
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
-wheel==0.37.0
+wheel==0.36.2
    # via
    #   -r cibuildwheel/resources/constraints.in
    #   delocate

 # The following packages are considered to be unsafe in a requirements file:
-pip==21.2.4
+pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==58.2.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -1,32 +1,28 @@
 #
-# This file is autogenerated by pip-compile with python 3.9
+# This file is autogenerated by pip-compile
 # To update, run:
 #
 #    bin/update_dependencies.py
 #
-backports.entry-points-selectable==1.1.0
+appdirs==1.4.4
    # via virtualenv
-delocate==0.10.0
+delocate==0.8.2
    # via -r cibuildwheel/resources/constraints.in
-distlib==0.3.3
+distlib==0.3.1
    # via virtualenv
-filelock==3.3.0
+filelock==3.0.12
    # via virtualenv
-platformdirs==2.4.0
+six==1.15.0
    # via virtualenv
-six==1.16.0
-    # via virtualenv
-typing-extensions==3.10.0.2
-    # via delocate
-virtualenv==20.8.1
+virtualenv==20.4.3
    # via -r cibuildwheel/resources/constraints.in
-wheel==0.37.0
+wheel==0.36.2
    # via
    #   -r cibuildwheel/resources/constraints.in
    #   delocate

 # The following packages are considered to be unsafe in a requirements file:
-pip==21.2.4
+pip==21.0.1
    # via -r cibuildwheel/resources/constraints.in
-setuptools==58.2.0
+setuptools==54.2.0
    # via -r cibuildwheel/resources/constraints.in
@@ -1,46 +0,0 @@
-[tool.cibuildwheel]
-build = "*"
-skip = ""
-test-skip = ""
-
-archs = ["auto"]
-build-frontend = "pip"
-dependency-versions = "pinned"
-environment = {}
-build-verbosity = ""
-
-before-all = ""
-before-build = ""
-repair-wheel-command = ""
-
-test-command = ""
-before-test = ""
-test-requires = []
-test-extras = []
-
-manylinux-x86_64-image = "manylinux2010"
-manylinux-i686-image = "manylinux2010"
-manylinux-aarch64-image = "manylinux2014"
-manylinux-ppc64le-image = "manylinux2014"
-manylinux-s390x-image = "manylinux2014"
-manylinux-pypy_x86_64-image = "manylinux2010"
-manylinux-pypy_i686-image = "manylinux2010"
-manylinux-pypy_aarch64-image = "manylinux2014"
-
-musllinux-x86_64-image = "musllinux_1_1"
-musllinux-i686-image = "musllinux_1_1"
-musllinux-aarch64-image = "musllinux_1_1"
-musllinux-ppc64le-image = "musllinux_1_1"
-musllinux-s390x-image = "musllinux_1_1"
-
-
-[tool.cibuildwheel.linux]
-repair-wheel-command = "auditwheel repair -w {dest_dir} {wheel}"
-
-[tool.cibuildwheel.macos]
-repair-wheel-command = [
-  "delocate-listdeps {wheel}",
-  "delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}",
-]
-
-[tool.cibuildwheel.windows]
@@ -24,6 +24,9 @@ STAT_0o775 = (
    | 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)
@@ -1,43 +1,26 @@
 [x86_64]
-manylinux1 = quay.io/pypa/manylinux1_x86_64:2021-10-10-fee0ae1
-manylinux2010 = quay.io/pypa/manylinux2010_x86_64:2021-10-10-790306f
-manylinux2014 = quay.io/pypa/manylinux2014_x86_64:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_x86_64:2021-10-10-790306f
-musllinux_1_1 = quay.io/pypa/musllinux_1_1_x86_64:2021-10-10-790306f
+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_64:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_x86_64:2021-05-01-28d233a

 [i686]
-manylinux1 = quay.io/pypa/manylinux1_i686:2021-10-10-fee0ae1
-manylinux2010 = quay.io/pypa/manylinux2010_i686:2021-10-10-790306f
-manylinux2014 = quay.io/pypa/manylinux2014_i686:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_i686:2021-10-10-790306f
-musllinux_1_1 = quay.io/pypa/musllinux_1_1_i686:2021-10-10-790306f
+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_i686:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_i686:2021-05-01-28d233a

 [pypy_x86_64]
-manylinux2010 = quay.io/pypa/manylinux2010_x86_64:2021-10-10-790306f
-manylinux2014 = quay.io/pypa/manylinux2014_x86_64:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_x86_64:2021-10-10-790306f
-
-[pypy_i686]
-manylinux2010 = quay.io/pypa/manylinux2010_i686:2021-10-10-790306f
-manylinux2014 = quay.io/pypa/manylinux2014_i686:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_i686:2021-10-10-790306f
+manylinux2010 = pypywheels/manylinux2010-pypy_x86_64:2020-12-11-f1e0e80

 [aarch64]
-manylinux2014 = quay.io/pypa/manylinux2014_aarch64:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_aarch64:2021-10-10-790306f
-musllinux_1_1 = quay.io/pypa/musllinux_1_1_aarch64:2021-10-10-790306f
+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:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_ppc64le:2021-10-10-790306f
-musllinux_1_1 = quay.io/pypa/musllinux_1_1_ppc64le:2021-10-10-790306f
+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:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_s390x:2021-10-10-790306f
-musllinux_1_1 = quay.io/pypa/musllinux_1_1_s390x:2021-10-10-790306f
-
-[pypy_aarch64]
-manylinux2014 = quay.io/pypa/manylinux2014_aarch64:2021-10-10-790306f
-manylinux_2_24 = quay.io/pypa/manylinux_2_24_aarch64:2021-10-10-790306f
-
+manylinux2014 = quay.io/pypa/manylinux2014_s390x:2021-05-01-28d233a
+manylinux_2_24 = quay.io/pypa/manylinux_2_24_s390x:2021-05-01-28d233a
@@ -0,0 +1,36 @@
+diff --git a/lib-python/3/sysconfig.py b/lib-python/3/sysconfig.py
+index 0d08cde66b4150e1772c13fdc6fe34d079c2b10d..30c77d165a2505d98bc7660ff0cc3b728f56c682 100644
+--- a/lib-python/3/sysconfig.py
+++ b/lib-python/3/sysconfig.py
+@@ -618,9 +618,6 @@ def get_config_vars(*args):
+             import _osx_support
+             _osx_support.customize_config_vars(_CONFIG_VARS)
+
+-        _CONFIG_VARS['INCLUDEPY'] = os.path.join(_CONFIG_VARS['prefix'],
+-                                                 'include')
+-
+     if args:
+         vals = []
+         for name in args:
+diff --git a/lib_pypy/_sysconfigdata.py b/lib_pypy/_sysconfigdata.py
+index f1cca41a4b7553819bb1a2a63af1c1a9b8591ce9..a34216e8e12b82abd72fabdd7793b3e8bb19bbcf 100644
+--- a/lib_pypy/_sysconfigdata.py
+++ b/lib_pypy/_sysconfigdata.py
+@@ -5,6 +5,7 @@ from distutils.spawn import find_executable
+
+ so_ext = _imp.extension_suffixes()[0]
+
+mybase = os.path.dirname(os.path.dirname(__file__))
+
+ build_time_vars = {
+     # SOABI is PEP 3149 compliant, but CPython3 has so_ext.split('.')[1]
+@@ -25,7 +26,8 @@ build_time_vars = {
+     'AR': "ar",
+     'ARFLAGS': "rc",
+     'EXE': "",
+-    'LIBDIR': os.path.join(sys.prefix, 'bin'),
+    'LIBDIR': os.path.join(mybase, 'lib'),
+    'INCLUDEPY': os.path.join(mybase, 'include'),
+ }
+
+ if find_executable("gcc"):
@@ -0,0 +1,27 @@
+--- a/lib-python/2.7/sysconfig.py
+++ b/lib-python/2.7/sysconfig.py
+@@ -553,9 +553,6 @@ def get_config_vars(*args):
+             if type_ == imp.C_EXTENSION:
+                 _CONFIG_VARS['SOABI'] = suffix.split('.')[1]
+                 break
+-        _CONFIG_VARS['INCLUDEPY'] = os.path.join(_CONFIG_VARS['prefix'],
+-                                                 'include')
+-
+     if args:
+         vals = []
+         for name in args:
+--- a/lib_pypy/_sysconfigdata.py
+++ b/lib_pypy/_sysconfigdata.py
+@@ -1,5 +1,11 @@
+-import imp
+import imp, os
+
+mybase = os.path.dirname(os.path.dirname(__file__))
+
+ build_time_vars = {
+     "SO": [s[0] for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION][0]
+ }
+
+build_time_vars['LIBDIR'] = os.path.join(mybase, 'lib')
+build_time_vars['INCLUDEPY'] = os.path.join(mybase, 'include')
+
@@ -4,25 +4,21 @@ import sys
 from typing import TYPE_CHECKING, NoReturn, Set, Union

 if sys.version_info < (3, 8):
-    from typing_extensions import Final, Literal, OrderedDict, Protocol, TypedDict
+    from typing_extensions import Final, Literal, TypedDict
 else:
-    from typing import Final, Literal, OrderedDict, Protocol, TypedDict
+    from typing import Final, Literal, TypedDict


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

@@ -4,49 +4,29 @@ import itertools
 import os
 import re
 import ssl
-import subprocess
-import sys
 import textwrap
 import time
 import urllib.request
 from enum import Enum
 from pathlib import Path
 from time import sleep
-from typing import Dict, Iterator, List, Optional
+from typing import Dict, Iterator, List, NamedTuple, Optional, Set

 import bracex
 import certifi
-import tomli
+import toml
 from packaging.specifiers import SpecifierSet
 from packaging.version import Version

-from .typing import Literal, PathOrStr, PlatformName
+from .architecture import Architecture
+from .environment import ParsedEnvironment
+from .typing import PathOrStr, PlatformName

 resources_dir = Path(__file__).parent / "resources"

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

-BuildFrontend = Literal["pip", "build"]
-
-MANYLINUX_ARCHS = (
-    "x86_64",
-    "i686",
-    "pypy_x86_64",
-    "aarch64",
-    "ppc64le",
-    "s390x",
-    "pypy_aarch64",
-    "pypy_i686",
-)
-
-MUSLLINUX_ARCHS = (
-    "x86_64",
-    "i686",
-    "aarch64",
-    "ppc64le",
-    "s390x",
-)
-

 def prepare_command(command: str, **kwargs: PathOrStr) -> str:
    """
@@ -69,50 +49,25 @@ def get_build_verbosity_extra_flags(level: int) -> List[str]:

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


-def selector_matches(patterns: str, string: str) -> bool:
-    """
-    Returns True if `string` is matched by any of the wildcard patterns in
-    `patterns`.
-
-    Matching is according to fnmatch, but with shell-like curly brace
-    expansion. For example, 'cp{36,37}-*' would match either of 'cp36-*' or
-    'cp37-*'.
-    """
-    patterns_list: List[str] = patterns.split()
-    patterns_list = itertools.chain.from_iterable(bracex.expand(p) for p in patterns_list)  # type: ignore[assignment]
-    return any(fnmatch.fnmatch(string, pat) for pat in patterns_list)
-
-
 class IdentifierSelector:
    """
    This class holds a set of build/skip patterns. You call an instance with a
    build identifier, and it returns True if that identifier should be
    included. Only call this on valid identifiers, ones that have at least 2
-    numeric digits before the first dash. If a pre-release version X.Y is present,
-    you can filter it with prerelease="XY".
+    numeric digits before the first dash.
    """

-    # a pattern that skips prerelease versions, when include_prereleases is False.
-    PRERELEASE_SKIP = ""
-
    def __init__(
-        self,
-        *,
-        build_config: str,
-        skip_config: str,
-        requires_python: Optional[SpecifierSet] = None,
-        prerelease_pythons: bool = False,
+        self, *, build_config: str, skip_config: str, requires_python: Optional[SpecifierSet] = None
    ):
-        self.build_config = build_config
-        self.skip_config = skip_config
+        self.build_patterns = build_config.split()
+        self.skip_patterns = skip_config.split()
        self.requires_python = requires_python
-        self.prerelease_pythons = prerelease_pythons

    def __call__(self, build_id: str) -> bool:
        # Filter build selectors by python_requires if set
@@ -124,28 +79,20 @@ class IdentifierSelector:
            if not self.requires_python.contains(version):
                return False

-        # filter out the prerelease pythons if self.prerelease_pythons is False
-        if not self.prerelease_pythons and selector_matches(
-            BuildSelector.PRERELEASE_SKIP, build_id
-        ):
-            return False
+        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)

-        should_build = selector_matches(self.build_config, build_id)
-        should_skip = selector_matches(self.skip_config, build_id)
-
-        return should_build and not should_skip
+        build: bool = any(fnmatch.fnmatch(build_id, pat) for pat in build_patterns)
+        skip: bool = any(fnmatch.fnmatch(build_id, pat) for pat in skip_patterns)
+        return build and not skip

    def __repr__(self) -> str:
-        result = f"{self.__class__.__name__}(build_config={self.build_config!r}"
-
-        if self.skip_config:
-            result += f", skip_config={self.skip_config!r}"
-        if self.prerelease_pythons:
-            result += ", prerelease_pythons=True"
-
-        result += ")"
-
-        return result
+        if not self.skip_patterns:
+            return f'{self.__class__.__name__}({" ".join(self.build_patterns)!r})'
+        else:
+            return f'{self.__class__.__name__}({" ".join(self.build_patterns)!r} - {" ".join(self.skip_patterns)!r})'


 class BuildSelector(IdentifierSelector):
@@ -161,18 +108,18 @@ class TestSelector(IdentifierSelector):

 # Taken from https://stackoverflow.com/a/107717
 class Unbuffered:
-    def __init__(self, stream):  # type: ignore[no-untyped-def]
+    def __init__(self, stream):  # type: ignore
        self.stream = stream

-    def write(self, data):  # type: ignore[no-untyped-def]
+    def write(self, data):  # type: ignore
        self.stream.write(data)
        self.stream.flush()

-    def writelines(self, data):  # type: ignore[no-untyped-def]
-        self.stream.writelines(data)
+    def writelines(self, datas):  # type: ignore
+        self.stream.writelines(datas)
        self.stream.flush()

-    def __getattr__(self, attr):  # type: ignore[no-untyped-def]
+    def __getattr__(self, attr):  # type: ignore
        return getattr(self.stream, attr)


@@ -216,7 +163,7 @@ class DependencyConstraints:
        version_parts = version.split(".")

        # try to find a version-specific dependency file e.g. if
-        # ./constraints.txt is the base, look for ./constraints-python36.txt
+        # ./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_name = specific_stem + self.base_file_path.suffix
        specific_file_path = self.base_file_path.with_name(specific_name)
@@ -226,13 +173,26 @@ 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})"

-    def __eq__(self, o: object) -> bool:
-        if not isinstance(o, DependencyConstraints):
-            return False

-        return self.base_file_path == o.base_file_path
+class BuildOptions(NamedTuple):
+    package_dir: Path
+    output_dir: Path
+    build_selector: BuildSelector
+    architectures: Set[Architecture]
+    environment: ParsedEnvironment
+    before_all: str
+    before_build: Optional[str]
+    repair_command: str
+    manylinux_images: Optional[Dict[str, str]]
+    dependency_constraints: Optional[DependencyConstraints]
+    test_command: Optional[str]
+    test_selector: TestSelector
+    before_test: Optional[str]
+    test_requires: List[str]
+    test_extras: str
+    build_verbosity: int


 class NonPlatformWheelError(Exception):
@@ -315,18 +275,3 @@ def print_new_wheels(msg: str, output_dir: Path) -> Iterator[None]:
    s = time.time() - start_time
    m = s / 60
    print(msg.format(n=n, s=s, m=m), *sorted(f"  {f.name}" for f in new_contents), sep="\n")
-
-
-def get_pip_version(env: Dict[str, str]) -> str:
-    # we use shell=True here for windows, even though we don't need a shell due to a bug
-    # https://bugs.python.org/issue8557
-    shell = sys.platform.startswith("win")
-    versions_output_text = subprocess.check_output(
-        ["python", "-m", "pip", "freeze", "--all"], universal_newlines=True, shell=shell, env=env
-    )
-    (pip_version,) = (
-        version[5:]
-        for version in versions_output_text.strip().splitlines()
-        if version.startswith("pip==")
-    )
-    return pip_version
@@ -7,27 +7,28 @@ from pathlib import Path
 from typing import Dict, List, NamedTuple, Optional, Sequence, Set
 from zipfile import ZipFile

+import toml
+
 from .architecture import Architecture
 from .environment import ParsedEnvironment
 from .logger import log
-from .options import Options
-from .typing import PathOrStr, assert_never
+from .typing import PathOrStr
 from .util import (
-    BuildFrontend,
+    BuildOptions,
    BuildSelector,
    NonPlatformWheelError,
    download,
    get_build_verbosity_extra_flags,
-    get_pip_version,
+    get_pip_script,
    prepare_command,
    read_python_configs,
 )

-CIBW_INSTALL_PATH = Path("C:\\cibw")
+IS_RUNNING_ON_AZURE = Path("C:\\hostedtoolcache").exists()


 def call(
-    args: Sequence[PathOrStr], env: Optional[Dict[str, str]] = None, cwd: Optional[PathOrStr] = None
+    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
@@ -35,15 +36,13 @@ def call(
    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[PathOrStr] = None
-) -> None:
+def shell(command: str, env: Optional[Dict[str, str]] = None, cwd: Optional[str] = None) -> None:
    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"
+    python_name = "python" if version[0] == "3" else "python2"
    if arch == "32":
        python_name += "x86"
    return [
@@ -53,7 +52,7 @@ def get_nuget_args(version: str, arch: str) -> List[str]:
        "-FallbackSource",
        "https://api.nuget.org/v3/index.json",
        "-OutputDirectory",
-        str(CIBW_INSTALL_PATH / "python"),
+        "C:\\cibw\\python",
    ]


@@ -78,6 +77,13 @@ def get_python_configurations(
        "64": Architecture.AMD64,
    }

+    # 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
@@ -101,18 +107,19 @@ def install_cpython(version: str, arch: str, nuget: Path) -> Path:


 def install_pypy(version: str, arch: str, url: str) -> Path:
-    assert arch == "64" and "win64" in url
+    assert arch == "32"
    # Inside the PyPy zip file is a directory with the same name
    zip_filename = url.rsplit("/", 1)[-1]
    extension = ".zip"
    assert zip_filename.endswith(extension)
-    installation_path = CIBW_INSTALL_PATH / zip_filename[: -len(extension)]
+    installation_path = Path("C:\\cibw") / zip_filename[: -len(extension)]
    if not installation_path.exists():
-        pypy_zip = CIBW_INSTALL_PATH / 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)
-        (installation_path / "python.exe").symlink_to(installation_path / "pypy3.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


@@ -120,10 +127,8 @@ def setup_python(
    python_configuration: PythonConfiguration,
    dependency_constraint_flags: Sequence[PathOrStr],
    environment: ParsedEnvironment,
-    build_frontend: BuildFrontend,
 ) -> Dict[str, str]:
-
-    nuget = CIBW_INSTALL_PATH / "nuget.exe"
+    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)
@@ -181,31 +186,9 @@ def setup_python(
        )
        sys.exit(1)

-    log.step("Installing build tools...")
-
-    # Install pip
-
-    requires_reinstall = not (installation_path / "Scripts" / "pip.exe").exists()
-    if requires_reinstall:
-        # maybe pip isn't installed at all. ensurepip resolves that.
-        call(["python", "-m", "ensurepip"], env=env, cwd=CIBW_INSTALL_PATH)
-
-    # upgrade pip to the version matching our constraints
-    # if necessary, reinstall it to ensure that it's available on PATH as 'pip.exe'
-    call(
-        [
-            "python",
-            "-m",
-            "pip",
-            "install",
-            "--force-reinstall" if requires_reinstall else "--upgrade",
-            "pip",
-            *dependency_constraint_flags,
-        ],
-        env=env,
-        cwd=CIBW_INSTALL_PATH,
-    )
-
+    # 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(
@@ -221,137 +204,111 @@ def setup_python(
        )
        sys.exit(1)

-    call(["pip", "--version"], env=env)
+    log.step("Installing build tools...")

-    if build_frontend == "pip":
-        call(
-            [
-                "pip",
-                "install",
-                "--upgrade",
-                "setuptools",
-                "wheel",
-                *dependency_constraint_flags,
-            ],
-            env=env,
-        )
-    elif build_frontend == "build":
-        call(
-            ["pip", "install", "--upgrade", "build[virtualenv]", *dependency_constraint_flags],
-            env=env,
-        )
-    else:
-        assert_never(build_frontend)
+    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


-def build(options: Options) -> None:
+def pep_518_cp35_workaround(package_dir: Path, env: Dict[str, str]) -> None:
+    """
+    Python 3.5 PEP 518 hack (see https://github.com/pypa/pip/issues/8392#issuecomment-639563494)
+    Basically, nuget's Python is an embedded Python distribution, which is not supported by pip.
+    Before version 3.6, there was no way to disable the "embedded" behavior, including the ignoring
+    of environment variables, including the ones pip uses to setup PEP 518 builds.
+
+    The fix here is as suggested in that issue; we manually setup the PEP 518 requirements. Since we
+    are in a fresh environment (except for pinned cibuildweel dependencies), the build is already
+    mostly "isolated".
+    """
+
+    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 []
+
+        if requirements:
+            log.step("Performing PEP518 workaround...")
+            with tempfile.TemporaryDirectory() as d:
+                reqfile = Path(d) / "requirements.txt"
+                with reqfile.open("w") as f:
+                    for r in requirements:
+                        print(r, file=f)
+                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"

-    python_configurations = get_python_configurations(
-        options.globals.build_selector, options.globals.architectures
-    )
-
    try:
-        before_all_options_identifier = python_configurations[0].identifier
-        before_all_options = options.build_options(before_all_options_identifier)
-
-        if before_all_options.before_all:
+        if options.before_all:
            log.step("Running before_all...")
-            env = before_all_options.environment.as_dictionary(prev_environment=os.environ)
+            env = options.environment.as_dictionary(prev_environment=os.environ)
            before_all_prepared = prepare_command(
-                before_all_options.before_all, project=".", package=options.globals.package_dir
+                options.before_all, project=".", package=options.package_dir
            )
            shell(before_all_prepared, env=env)

+        python_configurations = get_python_configurations(
+            options.build_selector, options.architectures
+        )
+
        for config in python_configurations:
-            build_options = options.build_options(config.identifier)
            log.build_start(config.identifier)

            dependency_constraint_flags: Sequence[PathOrStr] = []
-            if build_options.dependency_constraints:
+            if options.dependency_constraints:
                dependency_constraint_flags = [
                    "-c",
-                    build_options.dependency_constraints.get_for_python_version(config.version),
+                    options.dependency_constraints.get_for_python_version(config.version),
                ]

            # install Python
-            env = setup_python(
-                config,
-                dependency_constraint_flags,
-                build_options.environment,
-                build_options.build_frontend,
-            )
+            env = setup_python(config, dependency_constraint_flags, options.environment)

            # run the before_build command
-            if build_options.before_build:
+            if options.before_build:
                log.step("Running before_build...")
                before_build_prepared = prepare_command(
-                    build_options.before_build, project=".", package=options.globals.package_dir
+                    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"):
+                pep_518_cp35_workaround(options.package_dir, env)
+
            log.step("Building wheel...")
            if built_wheel_dir.exists():
                shutil.rmtree(built_wheel_dir)
            built_wheel_dir.mkdir(parents=True)
-
-            verbosity_flags = get_build_verbosity_extra_flags(build_options.build_verbosity)
-
-            if build_options.build_frontend == "pip":
-                # Path.resolve() is needed. Without it pip wheel may try to fetch package from pypi.org
-                # see https://github.com/pypa/cibuildwheel/pull/369
-                call(
-                    [
-                        "python",
-                        "-m",
-                        "pip",
-                        "wheel",
-                        options.globals.package_dir.resolve(),
-                        f"--wheel-dir={built_wheel_dir}",
-                        "--no-deps",
-                        *get_build_verbosity_extra_flags(build_options.build_verbosity),
-                    ],
-                    env=env,
-                )
-            elif build_options.build_frontend == "build":
-                config_setting = " ".join(verbosity_flags)
-                build_env = env.copy()
-                if build_options.dependency_constraints:
-                    constraints_path = build_options.dependency_constraints.get_for_python_version(
-                        config.version
-                    )
-                    # Bug in pip <= 21.1.3 - we can't have a space in the
-                    # constraints file, and pip doesn't support drive letters
-                    # in uhi.  After probably pip 21.2, we can use uri. For
-                    # now, use a temporary file.
-                    if " " in str(constraints_path):
-                        tmp_file = tempfile.NamedTemporaryFile(
-                            "w", suffix="constraints.txt", delete=False, dir=CIBW_INSTALL_PATH
-                        )
-                        with tmp_file as new_constraints_file, open(constraints_path) as f:
-                            new_constraints_file.write(f.read())
-                            constraints_path = Path(new_constraints_file.name)
-
-                    build_env["PIP_CONSTRAINT"] = str(constraints_path)
-                    build_env["VIRTUALENV_PIP"] = get_pip_version(env)
-                    call(
-                        [
-                            "python",
-                            "-m",
-                            "build",
-                            build_options.package_dir,
-                            "--wheel",
-                            f"--outdir={built_wheel_dir}",
-                            f"--config-setting={config_setting}",
-                        ],
-                        env=build_env,
-                    )
-            else:
-                assert_never(build_options.build_frontend)
+            # Path.resolve() is needed. Without it pip wheel may try to fetch package from pypi.org
+            # 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"))

@@ -363,10 +320,10 @@ def build(options: Options) -> None:
            if built_wheel.name.endswith("none-any.whl"):
                raise NonPlatformWheelError()

-            if build_options.repair_command:
+            if options.repair_command:
                log.step("Repairing wheel...")
                repair_command_prepared = prepare_command(
-                    build_options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir
+                    options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir
                )
                shell(repair_command_prepared, env=env)
            else:
@@ -374,7 +331,7 @@ def build(options: Options) -> None:

            repaired_wheel = next(repaired_wheel_dir.glob("*.whl"))

-            if build_options.test_command and options.globals.test_selector(config.identifier):
+            if options.test_command and options.test_selector(config.identifier):
                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.
@@ -396,31 +353,31 @@ def build(options: Options) -> None:
                # check that we are using the Python from the virtual environment
                call(["where", "python"], env=virtualenv_env)

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

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

                # test the wheel
-                if build_options.test_requires:
-                    call(["pip", "install"] + build_options.test_requires, env=virtualenv_env)
+                if options.test_requires:
+                    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(
-                    build_options.test_command,
+                    options.test_command,
                    project=Path(".").resolve(),
-                    package=options.globals.package_dir.resolve(),
+                    package=options.package_dir.resolve(),
                )
                shell(test_command_prepared, cwd="c:\\", env=virtualenv_env)

@@ -428,7 +385,7 @@ def build(options: Options) -> None:
                shutil.rmtree(venv_dir)

            # we're all done here; move it to output (remove if already exists)
-            shutil.move(str(repaired_wheel), build_options.output_dir)
+            shutil.move(str(repaired_wheel), options.output_dir)
            log.build_end()
    except subprocess.CalledProcessError as error:
        log.step_end_with_error(
@@ -2,606 +2,11 @@
 title: Changelog
 ---

-### v2.2.0
-
-_22 October 2021_
-
- 🌟 Added support for [musllinux](https://www.python.org/dev/peps/pep-0656/). Support for this new wheel format lets projects build wheels for Linux distributions that use [musl libc](https://musl.libc.org/), notably, [Alpine](https://alpinelinux.org/) Docker containers. (#768)
-
-  Musllinux builds are enabled by default. If you're not ready to build musllinux, add `*-musllinux_*` to your [`CIBW_SKIP`/`skip`](https://cibuildwheel.readthedocs.io/en/stable/options/#build-skip) option. Or, you might have to make some changes to your options - to simplify that process, you can use...
-
- 🌟 TOML option overrides! This provides much greater flexibility in configuration via pyproject.toml. (#854)
-
-  You can now set build options for any subset of your builds using a match pattern. So, for example, you can customise CPython 3.8 builds with an override on `cp38-*` or musllinux builds by selecting `*musllinux*`. Check out [the docs](https://cibuildwheel.readthedocs.io/en/latest/options/#overrides) for more info on the specifics.
-
- 🛠 Added support for building PyPy wheels on macOS 11 CI runners. (#875)
-
- 🛠 Setting an empty string for the [`CIBW_*_IMAGE`](https://cibuildwheel.readthedocs.io/en/stable/options/#manylinux-image) option will now fallthrough to the config file or cibuildwheel's default, rather than causing an error. This makes the option easier to use in CI build matricies. (#829)
-
- 🛠 Support for TOML 1.0 when reading config files, via the `tomli` package. (#876)
-
-### v2.1.3
-
-_6 October 2021_
-
- 🛠 Updated CPython 3.10 to the 3.10.0 final release
-
-### v2.1.2
-
-_14 September 2021_
-
- 🛠 Updated CPython 3.10 to 3.10.0rc2
- 📚 Multiple docs updates
- 🐛 Improved warnings when built binaries are bundled into the container on Linux. (#807)
-
-### v2.1.1
-
-_7 August 2021_
-
- ✨ Corresponding with the release of CPython 3.10.0rc1, which is ABI stable, cibuildwheel now builds CPython 3.10 by default - without the CIBW_PRERELEASE_PYTHONS flag.
-
-<sup>Note: v2.1.0 was a bad release, it was yanked from PyPI.</sup>
-
-### v2.0.1
-
-_25 July 2021_
-
- 📚 Docs improvements (#767)
- 🛠 Dependency updates, including delocate 0.9.0.
-
-### v2.0.0 🎉
-
-_16 July 2021_
-
- 🌟 You can now configure cibuildwheel options inside your project's `pyproject.toml`! Environment variables still work of course. Check out the [documentation](https://cibuildwheel.readthedocs.io/en/stable/options/#setting-options) for more info.
- 🌟 Added support for building wheels with [build](https://github.com/pypa/build), as well as pip. This feature is controlled with the [`CIBW_BUILD_FRONTEND`](https://cibuildwheel.readthedocs.io/en/stable/options/#build-frontend) option.
- 🌟 Added the ability to test building wheels on CPython 3.10! Because CPython 3.10 is in beta, these wheels should not be distributed, because they might not be compatible with the final release, but it's available to build for testing purposes. Use the flag [`--prerelease-pythons` or `CIBW_PRERELEASE_PYTHONS`](https://cibuildwheel.readthedocs.io/en/stable/options/#prerelease-pythons) to test. (#675) This version of cibuildwheel includes CPython 3.10.0b4.
- ⚠️ **Removed support for building Python 2.7 and Python 3.5 wheels**, for both CPython and PyPy. If you still need to build on these versions, please use the latest v1.x version. (#596)
- ✨ Added the ability to build CPython 3.8 wheels for Apple Silicon. (#704)
- 🛠 Update to the latest build dependencies, including Auditwheel 4. (#633)
- 🛠 Use the unified pypa/manylinux images to build PyPy (#671)
- 🐛 Numerous bug fixes & docs improvements
-
-### v1.12.0
-
-_22 June 2021_
-
- ✨ Adds support building macOS 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_
-
- ✨ Added `manylinux_2_24` support. To use these new Debian-based manylinux
-  images, set your [manylinux image](https://cibuildwheel.readthedocs.io/en/stable/options/#linux-image)
-  options to `manylinux_2_24`.
- 🛠 On macOS, we now set `MACOSX_DEPLOYMENT_TARGET` in before running
-  `CIBW_BEFORE_ALL`. This is useful when using `CIBW_BEFORE_ALL` to build a
-  shared library.
- 🛠 An empty `CIBW_BUILD` option is now the same as being unset i.e, `*`.
-  This makes some build matrix configuration easier. (#588)
- 📚 Neatened up documentation - added tabs to a few places (#576), fixed some
-  formatting issues.
-
-### v1.9.0
-
-_5 February 2021_
-
- 🌟 Added support for Apple Silicon wheels on macOS! You can now
-  cross-compile `universal2` and `arm64` wheels on your existing macOS Intel
-  runners, by setting
-  [CIBW_ARCHS_MACOS](https://cibuildwheel.readthedocs.io/en/stable/options/#archs).
-  Xcode 12.2 or later is required, but you don't need macOS 11.0 - you can
-  still build on macOS 10.15. See
-  [this FAQ entry](https://cibuildwheel.readthedocs.io/en/stable/faq/#apple-silicon)
-  for more information. (#484)
- 🌟 Added auto-detection of your package's Python compatibility, via declared
-   [`requires-python`](https://www.python.org/dev/peps/pep-0621/#requires-python)
-  in your `pyproject.toml`, or
-  [`python_requires`](https://packaging.python.org/guides/distributing-packages-using-setuptools/#python-requires)
-  in `setup.cfg` or `setup.py`. If your project has these set, cibuildwheel
-  will automatically skip builds on versions of Python that your package
-  doesn't support. Hopefully this makes the first-run experience of
-  cibuildwheel a bit easier. If you need to override this for any reason,
-  look at [`CIBW_PROJECT_REQUIRES_PYTHON`](https://cibuildwheel.readthedocs.io/en/stable/options/#requires-python).
-  (#536)
- 🌟 cibuildwheel can now be invoked as a native GitHub Action! You can now
-  invoke cibuildwheel in a GHA build step like:
-
-  ```yaml
-  - name: Build wheels
-    uses: pypa/cibuildwheel@version # e.g. v1.9.0
-    with:
-      output-dir: wheelhouse
-    # env:
-    #   CIBW_SOME_OPTION: value
-  ```
-
-  This saves a bit of boilerplate, and you can [use Dependabot to keep the
-  pinned version up-to-date](https://cibuildwheel.readthedocs.io/en/stable/faq/#automatic-updates).
-
- ✨ Added `auto64` and `auto32` shortcuts to the
-  [CIBW_ARCHS](https://cibuildwheel.readthedocs.io/en/stable/options/#archs)
-  option. (#553)
- ✨ cibuildwheel now prints a list of the wheels built at the end of each
-  run. (#570)
- 📚 Lots of minor docs improvements.
-
-### 1.8.0
-
-_22 January 2021_
-
- 🌟 Added support for emulated builds! You can now build manylinux wheels on
-  ARM64`aarch64`, as well as `ppc64le` and 's390x'. To build under emulation,
-  register QEMU via binfmt_misc and set the
-  [`CIBW_ARCHS_LINUX`](https://cibuildwheel.readthedocs.io/en/stable/options/#archs)
-  option to the architectures you want to run. See
-  [this FAQ entry](https://cibuildwheel.readthedocs.io/en/stable/faq/#emulation)
-  for more information. (#482)
- ✨ Added `CIBW_TEST_SKIP` option. This allows you to choose certain builds
-  whose tests you'd like to skip. This might be useful when running a slow
-  test suite under emulation, for example. (#537)
- ✨ Added `curly-{brace,bracket,paren}` style globbing to `CIBW_BUILD` and
-  `CIBW_SKIP`. This gives more expressivity, letting you do things like
-  `CIBW_BUILD=cp39-manylinux_{aarch64,ppc64le}`. (#527)
- 🛠 cibuildwheel will now exit with an error if it's called with options that
-  skip all builds on a platform. This feature can be disabled by adding
-  `--allow-empty` on the command line. (#545)
-
-### 1.7.4
-
-_2 January 2021_
-
- 🐛 Fix the PyPy virtualenv patch to work on macOS 10.14 (#506)
-
-### 1.7.3
-
-_1 January 2021_
-
- 🛠 Added a patch for Pypy to ensure header files are available for building
-  in a virtualenv. (#502)
- 🛠 Some preparatory work towards using cibuildwheel as a GitHub Action.
-  Check out
-  [the FAQ](https://cibuildwheel.readthedocs.io/en/stable/faq/#option-1-github-action)
-  for information on how to use it. We'll be fully updating the docs to this
-  approach in a subsequent release (#494)
-
-### 1.7.2
-
-_21 December 2020_
-
- 🛠 Update dependencies, notably wheel==0.36.2 and pip==20.3.3, and CPython to
-  their latest bugfix releases (#489)
- 📚 Switch to a GitHub example in the README (#479)
- 📚 Create Working Examples table, with many projects that use cibuildwheel (#474)
- 📚 Import Working Examples table and Changelog to docs
-
-### 1.7.1
-
-_3 December 2020_
-
- 🛠 Update manylinux2010 image to resolve issues with 'yum' repositories
-  (#472)
-
-### 1.7.0
-
-_26 November 2020_
-
- ✨ New logging format, that uses 'fold groups' in CI services that support
-  it. (#458)
- 🛠 Update PyPy to 7.3.3 (#460)
- 🐛 Fix a bug where CIBW_BEFORE_ALL runs with a very old version of Python on
-  Linux. (#464)
-
-### 1.6.4
-
-_31 October 2020_
-
- 🐛 Fix crash on Appveyor during nuget install due to old system CA
-  certificates. We now use certifi's CA certs to download files. (#455)
-
-### 1.6.3
-
-_12 October 2020_
-
- 🐛 Fix missing SSL certificates on macOS (#447)
- 🛠 Update OpenSSL Python 3.5 patch to 1.1.1h on macOS (#449)
-
-### 1.6.2
-
-_9 October 2020_
-
- ✨ Python 3.9 updated to the final release version - v3.9.0 (#440)
- 🛠 Pypy updated to v7.3.2, adding alpha support for Python 3.7 (#430)
-
-### 1.6.1
-
-_20 September 2020_
-
- 🛠 Add PPC64LE manylinux image supporting Python 3.9. (#436)
- 📚 Add project URLs to PyPI listing (#428)
-
-### 1.6.0
-
-_9 September 2020_
-
- 🌟 Add Python 3.9 support! This initial support uses release candidate
-  builds. You can start publishing wheels for Python 3.9 now, ahead of
-  the official release. (#382)
-
-  Minor note - if you're building PPC64LE wheels, the manylinux image pinned
-  by this version is
-  [still on Python 3.9b3](https://github.com/pypa/manylinux/issues/758), not a
-  release candidate. We'd advise holding off on distributing 3.9 ppc64le wheels
-  until a subsequent version of cibuildwheel.
-
- 🌟 Add Gitlab CI support. Gitlab CI can now build Linux wheels, using
-  cibuildwheel. (#419)
- 🐛 Fix a bug that causes pyproject.toml dependencies to fail to install on
-  Windows (#420)
- 📚 Added some information about Windows VC++ runtimes and how they relate
-  to wheels.
-
-### 1.5.5
-
-_22 July 2020_
-
- 🐛 Fix a bug that would cause command substitutions in CIBW_ENVIRONMENT to
-  produce no output on Linux (#411)
- 🐛 Fix regression (introduced in 1.5.3) which caused BEFORE_BUILD and
-  BEFORE_ALL to be executed in the wrong directory (#410)
-
-### 1.5.4
-
-_19 June 2020_
-
- 🐛 Fix a bug that would cause command substitutions in CIBW_ENVIRONMENT
-  variables to not interpret quotes in commands correctly (#406, #408)
-
-### 1.5.3
-
-_19 July 2020_
-
- 🛠 Update CPython 3.8 to 3.8.3 (#405)
- 🛠 Internal refactoring of Linux build, to move control flow into Python (#386)
-
-### 1.5.2
-
-_8 July 2020_
-
- 🐛 Fix an issue on Windows where pyproject.toml would cause an error when
-  some requirements formats were used. (#401)
- 🛠 Update CPython 3.7 to 3.7.8 (#394)
-
-### 1.5.1
-
-_25 June 2020_
-
- 🐛 Fix "OSError: [WinError 17] The system cannot move the file to a different
-  disk drive" on GitHub Actions (#388, #389)
-
-### 1.5.0
-
-_24 June 2020_
-
- 🌟 Add [`CIBW_BEFORE_ALL`](https://cibuildwheel.readthedocs.io/en/stable/options/#before-all)
-  option, which lets you run a command on the build machine before any wheels
-  are built. This is especially useful when building on Linux, to `make`
-  something external to Python, or to `yum install` a dependency. (#342)
- ✨ Added support for projects using pyproject.toml instead of setup.py
-  (#360, #358)
- ✨ Added workaround to allow Python 3.5 on Windows to pull dependencies from
-  pyproject.toml. (#358)
- 📚 Improved GitHub Actions examples and docs (#354, #362)
- 🐛 Ensure pip wheel uses the specified package, and doesn't build a wheel
-  from PyPI (#369)
- 🛠 Internal changes: using pathlib.Path, precommit hooks, testing
-  improvements.
-
-### 1.4.2
-
-_25 May 2020_
-
- 🛠 Dependency updates, including CPython 3.8.3 & manylinux images.
- 🛠 Lots of internal updates - type annotations and checking using mypy, and
-  a new integration testing system.
- ⚠️ Removed support for *running* cibuildwheel using Python 3.5. cibuildwheel
-  will continue to build Python 3.5 wheels until EOL.
-
-### 1.4.1
-
-_4 May 2020_
-
- 🐛 Fix a bug causing programs running inside the i686 manylinux images to
-  think they were running x86_64 and target the wrong architecture. (#336,
-  #338)
-
-### 1.4.0
-
-_2 May 2020_
-
- 🌟 Deterministic builds. cibuildwheel now locks the versions of the tools it
-  uses. This means that pinning your version of cibuildwheel pins the versions
-  of pip, setuptools, manylinux etc. that are used under the hood. This should
-  make things more reliable. But note that we don't control the entire build
-  environment on macOS and Windows, where the version of Xcode and Visual
-  Studio can still effect things.
-
-  This can be controlled using the [CIBW_DEPENDENCY_VERSIONS](https://cibuildwheel.readthedocs.io/en/stable/options/#dependency-versions)
-  and [manylinux image](https://cibuildwheel.readthedocs.io/en/stable/options/#linux-image)
-  options - if you always want to use the latest toolchain, you can still do
-  that, or you can specify your own pip constraints file and manylinux image.
-  (#256)
-
- ✨ Added `package_dir` command line option, meaning we now support building
-  a package that lives in a subdirectory and pulls in files from the wider
-  project. See [the `package_dir` option help](https://cibuildwheel.readthedocs.io/en/stable/options/#command-line-options)
-  for more information.
-
-  Note that this change makes the working directory (where you call
-  cibuildwheel from) relevant on Linux, as it's considered the 'project' and
-  will be copied into the Docker container. If your builds are slower on this
-  version, that's likely the reason. `cd` to your project and then call
-  `cibuildwheel` from there. (#319, #295)
-
- 🛠 On macOS, we make `MACOSX_DEPLOYMENT_TARGET` default to `10.9` if it's
-  not set. This should make things more consistent between Python versions.
- 🛠 Dependency updates - CPython 3.7.7, CPython 2.7.18, Pypy 7.3.1.
-
-### 1.3.0
-
-_12 March 2020_
-
- 🌟 Add support for building on GitHub Actions! Check out the
-  [docs](https://cibuildwheel.readthedocs.io/en/stable/setup/#github-actions)
-  for information on how to set it up. (#194)
- ✨ Add the `CIBW_BEFORE_TEST` option, which lets you run a command to
-  prepare the environment before your tests are run. (#242)
-
-### 1.2.0
-
-_8 March 2020_
-
- 🌟 Add support for building PyPy wheels, across Manylinux, macOS, and
-  Windows. (#185)
- 🌟 Added the ability to build ARM64 (aarch64), ppc64le, and s390x wheels,
-  using manylinux2014 and Travis CI. (#273)
- ✨ You can now build macOS wheels on Appveyor. (#230)
- 🛠 Changed default macOS minimum target to 10.9, from 10.6. This allows the
-  use of more modern C++ libraries, among other things. (#156)
- 🛠 Stop building universal binaries on macOS. We now only build x86_64
-  wheels on macOS. (#220)
- ✨ Allow chaining of commands using `&&` and `||` on Windows inside
-  CIBW_BEFORE_BUILD and CIBW_TEST_COMMAND. (#293)
- 🛠 Improved error reporting for failed Cython builds due to stale .so files
-  (#263)
- 🛠 Update CPython from 3.7.5 to 3.7.6 and from 3.8.0 to 3.8.2 on Mac/Windows
- 🛠 Improved error messages when a bad config breaks cibuildwheel's PATH
-  variable. (#264)
- ⚠️ Removed support for *running* cibuildwheel on Python 2.7. cibuildwheel
-  will continue to build Python 2.7 wheels for a little while. (#265)
-
-### 1.1.0
-
-_7 December 2019_
-
- 🌟 Add support for building manylinux2014 wheels. To use, set
-  `CIBW_MANYLINUX_X86_64_IMAGE` and CIBW_MANYLINUX_I686_IMAGE to
-  `manylinux2014`.
- ✨ Add support for [Linux on Appveyor](https://www.appveyor.com/blog/2018/03/06/appveyor-for-linux/) (#204, #207)
- ✨ Add `CIBW_REPAIR_WHEEL_COMMAND` env variable, for changing how
-  `auditwheel` or `delocate` are invoked, or testing an equivalent on
-  Windows. (#211)
- 📚 Added some travis example configs - these are available in /examples. (#228)
-
-### 1.0.0
-
-_10 November 2019_
-
- 🌟 Add support for building Python 3.8 wheels! (#180)
- 🌟 Add support for building manylinux2010 wheels. cibuildwheel will now
-  build using the manylinux2010 images by default. If your project is still
-  manylinux1 compatible, you should get both manylinux1 and manylinux2010
-  wheels - you can upload both to PyPI. If you always require manylinux1 wheels, you can
-  build using the old manylinux1 image using the [manylinux image](https://cibuildwheel.readthedocs.io/en/stable/options/#linux-image) option.
-  (#155)
- 📚 Documentation is now on its [own mini-site](https://cibuildwheel.readthedocs.io),
-   rather than on the README (#169)
- ✨ Add support for building Windows wheels on Travis CI. (#160)
- 🛠 If you set `CIBW_TEST_COMMAND`, your tests now run in a virtualenv. (#164)
- 🛠 Windows now uses Python as installed by nuget, rather than the versions
-  installed by the various CI providers. (#180)
- 🛠 Update Python from 2.7.16 to 2.7.17 and 3.7.4 to 3.7.5 on macOS (#171)
- ⚠️ Removed support for Python 3.4 (#168)
-
-### 0.12.0
-
-_29 September 2019_
-
- ✨ Add CIBW_TEST_EXTRAS option, to allow testing using extra_require
-  options. For example, set `CIBW_TEST_EXTRAS=test,qt` to make the wheel
-  installed with `pip install <wheel_file>[test,qt]`
- 🛠 Update Python from 3.7.2 to 3.7.4 on macOS
- 🛠 Update OpenSSL patch to 1.0.2t on macOS
-
-### 0.11.1
-
-_28 May 2019_
-
- 🐛 Fix missing file in the release tarball, that was causing problems with
-  Windows builds (#141)
-
-### 0.11.0
-
-_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/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).
-
-### 0.10.2
-
-_10 March 2019_
-
- 🛠 Revert temporary fix in macOS, that was working around a bug in pip 19 (#129)
- 🛠 Update Python to 2.7.16 on macOS
- 🛠 Update OpenSSL patch to 1.0.2r on macOS
-
-### 0.10.1
-
-_3 February 2019_
-
- 🐛 Fix build stalling on macOS (that was introduced in pip 19) (#122)
- 🐛 Fix "AttributeError: 'Popen' object has no attribute 'args'" on Python 2.7 for Linux builds (#108)
- 🛠 Update Python from 3.6.7, 3.7.1 to 3.6.8, 3.7.2 on macOS
- 🛠 Update openssl patch from 1.0.2p to 1.0.2q on macOS
- 🛠 Sorting build options dict items when printing preamble (#114)
-
-### 0.10.0
-
-_23 September 2018_
-
- 🌟 Add `CIBW_BUILD` option, for specifying which specific builds to perform (#101)
- 🌟 Add support for building Mac and Linux on CircleCI (#91, #97)
- 🛠 Improved support for building universal wheels (#95)
- 🛠 Ensure log output is unbuffered and therefore in the correct order (#92)
- 🛠 Improved error reporting for errors that occur inside a package's setup.py (#88)
- ⚠️ Removed support for Python 3.3 on Windows.
-
-### 0.9.4
-
-_29 July 2018_
-
- 🛠 CIBW_TEST_COMMAND now runs in a shell on Mac (as well as Linux) (#81)
-
-### 0.9.3
-
-_10 July 2018_
-
- 🛠 Update to Python 3.6.6 on macOS (#82)
- ✨ Add support for building Python 3.7 wheels on Windows (#76)
- ⚠️ Deprecated support for Python 3.3 on Windows.
-
-### 0.9.2
-
-_1 July 2018_
-
- 🛠  Update Python 3.7.0rc1 to 3.7.0 on macOS (#79)
-
-### 0.9.1
-
-_18 June 2018_
-
- 🛠 Removed the need to use `{python}` and `{pip}` in `CIBW_BEFORE_BUILD` statements, by ensuring the correct version is always on the path at `python` and `pip` instead. (#60)
- 🛠 We now patch the _ssl module on Python 3.4 and 3.5 so these versions can still make SSL web requests using TLS 1.2 while building. (#71)
-
-### 0.9.0
-
-_18 June 2018_
-
- ✨ Add support for Python 3.7 (#73)
-
-### 0.8.0
-
-_4 May 2018_
-
- ⚠️ Drop support for Python 3.3 on Linux (#67)
- 🐛 Fix TLS by updating setuptools (#69)
-
-### 0.7.1
-
-_2 April 2017_
-
- 🐛 macOS: Fix Pip bugs resulting from PyPI TLS 1.2 enforcement
- 🐛 macOS: Fix brew Python3 version problems in the CI
-
-### 0.7.0
-
-_7 January 2018_
-
- ✨ You can now specify a custom docker image using the `CIBW_MANYLINUX1_X86_64_IMAGE` and `CIBW_MANYLINUX1_I686_IMAGE` options. (#46)
- 🐛 Fixed a bug where cibuildwheel would download and build a package from PyPI(!) instead of building the package on the local machine. (#51)
-
-### 0.6.0
-
-_9 October 2017_
-
- ✨ On the Linux build, the host filesystem is now accessible via `/host` (#36)
- 🐛 Fixed a bug where setup.py scripts would run the wrong version of Python when running subprocesses on Linux (#35)
-
-### 0.5.1
-
-_10 September 2017_
-
- 🐛 Fixed a couple of bugs on Python 3.
- ✨ Added experimental support for Mac builds on [Bitrise.io](https://www.bitrise.io)
-
-### 0.5.0
-
-_7 September 2017_
-
- ✨ `CIBW_ENVIRONMENT` added. You can now set environment variables for each build, even within the Docker container on Linux. This is a big one! (#21)
- ✨ `CIBW_BEFORE_BUILD` now runs in a system shell on all platforms. You can now do things like `CIBW_BEFORE_BUILD="cmd1 && cmd2"`. (#32)
-
-### 0.4.1
-
-_14 August 2017_
-
- 🐛 Fixed a bug on Windows where subprocess' output was hidden (#23)
- 🐛 Fixed a bug on AppVeyor where logs would appear in the wrong order due to output buffering (#24, thanks @YannickJadoul!)
-
-### 0.4.0
-
-_23 July 2017_
-
- 🐛 Fixed a bug that was increasing the build time by building the wheel twice. This was a problem for large projects that have a long build time. If you're upgrading and you need the old behaviour, use `CIBW_BEFORE_BUILD={pip} install .`, or install exactly the dependencies you need in `CIBW_BEFORE_BUILD`. See #18.
-
-### 0.3.0
-
-_27 June 2017_
-
- ⚠️ Removed Python 2.6 support on Linux (#12)
-
-### 0.2.1
-
-_11 June 2017_
-
- 🛠 Changed the build process to install the package before building the wheel - this allows direct dependencies to be installed first (#9, thanks @tgarc!)
- ✨ Added Python 3 support for the main process, for systems where Python 3 is the default (#8, thanks @tgarc).
-
-### 0.2.0
-
-_13 April 2017_
-
- ✨ Added `CIBW_SKIP` option, letting users explicitly skip a build
- ✨ Added `CIBW_BEFORE_BUILD` option, letting users run a shell command before the build starts
-
-### 0.1.3
-
-_31 March 2017_
-
- 🌟 First public release!
+{%
+   include-markdown "../README.md"
+   start="<!--changelog-start-->"
+   end="<!--changelog-end-->"
+%}

 <script>
  // undo the scrollTop that the theme did on this page, as there are loads
@@ -20,7 +20,7 @@ Design Goals

 Other notes:

- The platforms are very similar, until they're not. I'd rather have straight-forward code than totally DRY code, so let's keep airy platform abstractions to a minimum.
+- The platforms are very similar, until they're not. I'd rather have straight-forward code than totally DRY code, so let's keep airy platfrom abstractions to a minimum.
 - I might want to break the options into a shared config file one day, so that config is more easily shared. That has motivated some of the design decisions.

 ### cibuildwheel's relationship with build errors
@@ -34,32 +34,11 @@ So, if we can, I'd like to improve the experience on errors as well. In [this](h
 Maintainer notes
 ----------------

-### Nox support
-
-Most developer tasks have a nox interface. This allows you to very simply run tasks without worrying about setting up a development environment (as shown below). This is a slower than setting up a development environment and reusing it, but has the (important) benefit of being highly reproducible; an earlier run does not affect a current run, or anything else on your machine.
-
-Install [nox](https://nox.thea.codes); homebrew is recommend on macOS, otherwise, pipx is a great choice - in fact, you can use `pipx run nox` and avoid installing completely.
-
-You can see a list of sessions by typing `nox -l`; here are a few common ones:
-
-```console
-nox -s lint          # Run the linters (default)
-nox -s tests         # Run the tests   (default)
-nox -s docs -- serve # Build and serve the documentation
-nox -s build         # Make SDist and wheel
-```
-
-More advanced users can run the update scripts. `update_pins` should work directly, but `update_constraints` needs all versions of Python installed. If you don't want to do that locally, a fast way to run it to use docker to run nox:
-
-```console
-docker run --rm -itv $PWD:/src -w /src quay.io/pypa/manylinux_2_24_x86_64:latest pipx run nox -s update_constraints
-```
-
 ### Local testing

 You should run:

-```console
+```python
 python3 -m venv venv
 . venv/bin/activate
 pip install -e .[dev]
@@ -94,6 +73,8 @@ This has been moved to using docker, so you only need the following instructions
 The dependency update script in the next section requires multiple python versions installed. One way to do this is to use `pyenv`:

 ```bash
+pyenv install 2.7.18
+pyenv install 3.5.9
 pyenv install 3.6.11
 pyenv install 3.7.8
 # Optionally add 3.8 and make it the local version;
@@ -103,6 +84,9 @@ pyenv install 3.7.8
 Then, you need to make the required virtual environments:

 ```bash
+$(pyenv prefix 2.7.18)/bin/python -m pip install virtualenv
+$(pyenv prefix 2.7.18)/bin/python -m virtualenv env27
+$(pyenv prefix 3.5.9)/bin/python -m venv env35
 $(pyenv prefix 3.6.11)/bin/python -m venv env36
 $(pyenv prefix 3.7.8)/bin/python -m venv env37
 ```
@@ -131,8 +115,9 @@ Finally, cut the release and upload to PyPI/GitHub.

 ```bash
 rm -rf dist
-python -m build
-git push && git push --tags && twine upload dist/*
+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.
@@ -5,6 +5,10 @@ title: Modern C++ standards
 Building Python wheels with modern C++ standards (C++11 and later) requires a few tricks.


+## Python 2.7 and C++17
+
+The Python 2.7 header files use the `register` keyword, which is [reserved and unused from C+17 onwards](https://en.cppreference.com/w/cpp/keyword/register). Compiling a wheel for Python 2.7 with the C++17 standard is still possible to allow usage of `register` using proper flag `-Wno-register` for gcc/clang and `/wd5033` for MSVC.
+
 ## manylinux1 and C++14
 The default `manylinux1` image (based on CentOS 5) contains a version of GCC and libstdc++ that only supports C++11 and earlier standards. There are however ways to compile wheels with the C++14 standard (and later): https://github.com/pypa/manylinux/issues/118

@@ -23,3 +27,45 @@ To get C++17 support, Xcode 9.3+ is needed, requiring at least macOS 10.13 on th
 However, if only C++17 compiler and standard template library (STL) features are used (not needing a C++17 runtime) it might be possible to set `MACOSX_DEPLOYMENT_TARGET` to a lower value, such as `"10.9"`. To find out if this is the case, try compiling and running with a lower `MACOSX_DEPLOYMENT_TARGET`: if C++17 features are used that require a more recent deployment target, building the wheel should fail.

 For more details see https://en.cppreference.com/w/cpp/compiler_support, https://en.wikipedia.org/wiki/Xcode, and https://xcodereleases.com/: Xcode 10 needs macOS 10.13 and Xcode 11 needs macOS 10.14.
+
+## Windows and Python 2.7
+
+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.
+
+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:
+
+1. Set the environment variables `DISTUTILS_USE_SDK=1` and `MSSdk=1`. These two environment variables will tell `distutils`/`setuptools` to not search and set up a build environment that uses Visual C++ for Python 2.7 (aka. MSVC 9).
+2. Set up the build Visual Studio build environment you want to use, making sure that e.g. `PATH` contains `cl`, `link`, etc.
+    - Usually, this can be done through `vcvarsall.bat x86` or `vcvarsall.bat x64`. The exact location of this file depends on the installation, but the default path for VS 2019 Community (e.g. used in AppVeyor's `Visual Studio 2019` image) is `C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat`. **Note**: `vcvarsall.bat` changes the environment variables, so this cannot be run in a subprocess/subshell and consequently running `vsvarsall.bat` in `CIBW_BEFORE_BUILD` does not have any effect.
+    - In Azure Pipelines, [a `VSBuild` task is available](https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/build/visual-studio-build)
+    - In GitHub Actions, the default shell is powershell, so you'll need to use `shell: cmd` to source a `.bat` file, and the directory is `"C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat"`. Or you can use an action, such as the [`ilammy/msvc-dev-cmd@v1`](https://github.com/ilammy/msvc-dev-cmd) action to setup the environment (see example below).
+3. Next, call `cibuildwheel`. Unfortunately, MSVC has separate toolchains for compiling 32-bit and 64-bit, so you will need to run `cibuildwheel` twice: once with `CIBW_BUILD=*-win32` after setting up the `x86` build environment, and once with `CIBW_BUILD=*-win_amd64` in a `x64` environment (see previous step).
+
+
+**GitHub Action example with ilammy/msvc-dev-cmd**:
+
+```yaml
+  - uses: ilammy/msvc-dev-cmd@v1
+
+  - name: Build 64-bit wheel
+    run: python -m cibuildwheel --output-dir wheelhouse
+    env:
+      CIBW_BUILD: cp27-win_amd64
+      DISTUTILS_USE_SDK: 1
+      MSSdk: 1
+
+  - uses: ilammy/msvc-dev-cmd@v1
+    with:
+      arch: x86
+
+  - name: Build 32-bit wheel
+    run: python -m cibuildwheel --output-dir wheelhouse
+    env:
+      CIBW_BUILD: cp27-win32
+      DISTUTILS_USE_SDK: 1
+      MSSdk: 1
+```
@@ -102,7 +102,7 @@

 - name: pikepdf
  gh: pikepdf/pikepdf
-  ci: [github]
+  ci: [azurepipelines]
  os: [windows, apple, linux]

 - name: fathon
@@ -363,143 +363,3 @@
  gh: LAMDA-NJU/Deep-Forest
  ci: [github]
  os: [apple, linux, windows]
-
- name: cmake
-  gh: scikit-build/cmake-python-distributions
-  stars: Kitware/CMake
-  ci: [github, travisci]
-  os: [apple, linux, windows]
-  notes: Multitagged binary builds for all supported platforms, using cibw 2 config configuration.
-
- name: ninja
-  gh: scikit-build/ninja-python-distributions
-  ci: [github, travisci]
-  os: [apple, linux, windows]
-  notes: Multitagged binary builds for all supported platforms, using cibw 2 config configuration.
-
- name: tgcalls
-  gh: MarshalX/tgcalls
-  pypi: pytgcalls
-  ci: [github]
-  os: [apple, windows]
-  notes: Python `pybind11` binding to Telegram's WebRTC library with third party dependencies like `OpenSSL`, `MozJPEG`, `FFmpeg`, etc.
-
- name: pillow-heif
-  gh: bigcat88/pillow_heif
-  pypi: pillow-heif
-  ci: [github]
-  os: [apple, linux]
-  notes: Python CFFI binding to libheif library with third party dependencies like `libde265`, `x265`, `libaom` with test & publishing on PyPi.
-
- name: clang-format
-  gh: ssciwr/clang-format-wheel
-  ci: [github]
-  os: [apple, linux, windows]
-  notes: Scikit-build wrapper around LLVM's CMake, all platforms, generic wheels.
-
- name: Tornado
-  gh: tornadoweb/tornado
-  ci: [travisci]
-  os: [apple, linux]
-
- name: pytorch-fairseq
-  gh: pytorch/fairseq
-  ci: [github]
-  os: [apple, linux]
-
- name: uvloop
-  gh: MagicStack/uvloop
-  ci: [github]
-  os: [apple, linux]
-
- name: asyncpg
-  gh: MagicStack/asyncpg
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: pydantic
-  gh: samuelcolvin/pydantic
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: vaex
-  gh: vaexio/vaex
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: cvxpy
-  gh: cvxpy/cvxpy
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: duckdb
-  gh: duckdb/duckdb
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: Triton
-  gh: openai/triton
-  ci: [github]
-  os: [linux]
-  notes: Self hosted runners
-
- name: vispy
-  gh: vispy/vispy
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: Confluent client for Kafka
-  gh: confluentinc/confluent-kafka-python
-  ci: [travisci]
-  os: [apple, linux, windows]
-  notes: setup in `tools/wheels/build-wheels.bat`
-
- name: tinyobjloader
-  gh: tinyobjloader/tinyobjloader
-  ci: [azurepipelines]
-  os: [apple, linux, windows]
-
- name: PyOxidizer
-  gh: indygreg/PyOxidizer
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: OpenSpiel
-  gh: deepmind/open_spiel
-  ci: [github]
-  os: [apple, linux]
-
- name: Google Benchmark
-  gh: google/benchmark
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: Apache Beam
-  gh: apache/beam
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: PyCryptodome
-  gh: Legrandin/pycryptodome
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: PyYAML
-  gh: yaml/pyyaml
-  ci: [github]
-  os: [apple]
-
- name: Line Profiler
-  gh: pyutils/line_profiler
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: Pixar OpenTimelineIO
-  gh: PixarAnimationStudios/OpenTimelineIO
-  ci: [github]
-  os: [apple, linux, windows]
-
- name: OpenColorIO
-  gh: AcademySoftwareFoundation/OpenColorIO
-  ci: [github]
-  os: [apple, linux, windows]
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" role="img" viewBox="0 0 24 24" width="16px" fill="#606060"><title>Azure Pipelines icon</title><path d="M1.7997 22.1998h4.2001V24H.0004v-6.0002h1.7993v4.2zM12.6229 9.8975l-7.6353 7.6353 1.4792 1.4792 7.6345-7.6362-1.4784-1.4783zM4.365 15.1793l-.391-.3908c-.5042-.5042-.5828-1.3004-.1869-1.8934l4.6036-6.8958H.9979c-.5513.0014-.9975.4487-.9975 1v5.5002l3.5021 3.6036.8625-.9238zM23.9996.9999v8.9306a2 2 0 0 1-.8893 1.6632l-12.2834 8.2005a.9999.9999 0 0 1-1.2622-.1246L8.04 18.1457c.3313-.3313 6.4656-6.4672 6.7684-6.7698l-2.1855-2.1855L5.8533 15.96l-1.5258-1.525a1.0001 1.0001 0 0 1-.1246-1.2623L12.4034.8893A2 2 0 0 1 14.0666 0h8.9331c.5522 0 .9999.4477.9999.9999zm-2.9997 5.0003c0-1.6567-1.343-2.9997-2.9997-2.9997s-2.9997 1.343-2.9997 2.9997 1.343 2.9997 2.9997 2.9997 2.9997-1.343 2.9997-2.9997zM10.272 20.4625c-.4008 0-.7776-.156-1.0609-.4392l-.368-.3679-.8435.8417 3.4996 3.4996h5.5003c.5522 0 .9999-.4477.9999-.9999v-7.3899L11.1045 20.21a1.4944 1.4944 0 0 1-.8325.2525z"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" role="img" viewBox="0 0 24 24" width="16px" fill="#606060"><title>Azure Pipelines icon</title><path d="M1.8 18H0v6h6v-1.8H1.8zM23 0h-8.93a2 2 0 0 0-1.67.89L9 5.99H1a1 1 0 0 0-1 1v5.5l3.5 3.61 1.2-1.29 1.5 1.5L5 17.53l1.48 1.48 1.22-1.22 1.5 1.51L8 20.5l3.5 3.5H17a1 1 0 0 0 1-1v-8l5.11-3.4A2 2 0 0 0 24 9.92V1a1 1 0 0 0-1-1zm-5 9a3 3 0 1 1 0-6 3 3 0 0 1 0 6z"/></svg>
@@ -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/pypa/cibuildwheel/blob/main/examples/travis-ci-deploy.yml) and [`examples/github-deploy.yml`](https://github.com/pypa/cibuildwheel/blob/main/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.
+[`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.
@@ -1,23 +1,11 @@

 /* Global styles */

-body {
-    overflow-wrap: break-word;
-}
-
 p {
    margin-bottom: 12px;
    line-height: 26px;
 }

-pre {
-  margin: 1em 0;
-}
-
-pre:first-child {
-  margin-top: 0;
-}
-
 code {
    font-size: 85%;
    background-color: rgba(27,31,35,.05);
@@ -30,12 +18,11 @@ code {

 code, pre, tt {
    font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, monospace;
-    line-height: 1.4;
 }

-pre code, pre code.hljs {
-  padding: 1em;
-  background-color: #f6f8fa;
+.hljs {
+    padding: 1em;
+    background-color: #f6f8fa;
 }

 h1, h2, h3, h4, h5, h6 {
@@ -125,21 +112,7 @@ h1, h2, h3, h4, h5, h6 {
  background-color: white;
  display: flex;
  justify-content: flex-start;
-  overflow-x: auto;
-  overflow-y: hidden;
-  position: relative;
-}
-.tabs-header::before {
-  position: absolute;
-  content: "";
-  bottom: 0;
-  left: 0;
-  right: 0;
-  height: 2px;
-  background: #ccc;
-}
-.tabs-header > * {
-  position: relative;
+  border-bottom: 2px solid #ccc;
 }

 /* Style the buttons that are used to open the tab content */
@@ -153,13 +126,15 @@ h1, h2, h3, h4, h5, h6 {
  font-size: 0.9em;
  font-weight: 600;
  padding: 8px 16px;
-  border-bottom: 2px solid #ccc;
+  border-bottom: 2px solid transparent;
+
+  /* put the border on top of the parent border */
+  margin-bottom: -2px;
 }

 .tabs-header button:focus-visible {
-  /* preserve an outline for accessibility purposes */
+  /* preserve an outline for accesibility purposes */
  outline: 1px solid currentColor;
-  outline-offset: -1px;
 }

 /* Change background color of buttons on hover */
@@ -178,50 +153,4 @@ h1, h2, h3, h4, h5, h6 {
  background-color: #f1f6fa;
  padding: 1px 1em;
  padding-top: 0.8em;
-
-  /* don't collapse inner margins */
-  overflow-y: hidden;
-}
-
-/* Examples tabs styling */
-
-.tabs.examples .tabs-header {
-  justify-content: flex-end;
-  background-color: transparent;
-  border-bottom-style: none;
-  padding: 0;
-}
-.tabs.examples .tabs-header::before {
-  height: 0;
-}
-.tabs.examples .tabs-header button {
-  padding: 6px 12px;
-  border-bottom: none;
-  color: rgba(0, 0, 0, 0.3);
-  font-size: 0.8em;
-  border-top-left-radius: 4px;
-  border-top-right-radius: 4px;
-}
-.tabs-header button:hover {
-  background-color: unset;
-}
-
-.tabs.examples .tabs-header button.active {
-  border-bottom-style: none;
-  background: #f6f8fa;
-  color: inherit;
-}
-.tabs.examples .tabs-content {
-  padding: 0;
-  background-color: transparent;
-  background-color: #f6f8fa;
-}
-.tabs.examples .tabs-content .tab > * {
-  padding-left: 0.8em;
-  padding-right: 0.8em;
-}
-.tabs.examples .tabs-content .tab > pre {
-  padding-left: 0;
-  padding-right: 0;
-  margin-bottom: 0.5em;
 }
@@ -20,17 +20,6 @@ while (true) {
  tabContainer.insertBefore(firstTab);
  tabContainer.append(headerContainer, contentContainer)

-  // add extra classes from the first tab to the container
-  const classes = Array.from(firstTab[0].classList)
-
-  for (let i = 0; i < classes.length; i++) {
-    const element = classes[i];
-    if (element == 'tab' || element == 'admonition') {
-      continue
-    }
-    tabContainer.addClass(element)
-  }
-
  const selectTab = function (index) {
    headerContainer.children().removeClass('active')
    headerContainer.children().eq(index).addClass('active')
@@ -2,23 +2,31 @@
 title: Tips and tricks
 ---

-## Tips
+### Troubleshooting
+
+If your wheel didn't compile, check the list below for some debugging tips.
+
+- A mistake in your config. To quickly test your config without doing a git push and waiting for your code to build on CI, you can test the Linux build in a Docker container. On Mac or Linux, with Docker running, try `cibuildwheel --platform linux`. You'll have to bring your config into the current environment first.
+
+- Missing dependency. You might need to install something on the build machine. You can do this in `.travis.yml`, `appveyor.yml`, or `.circleci/config.yml`, with apt-get, brew or choco. Given how the Linux build works, you'll need to use the [`CIBW_BEFORE_BUILD`](options.md#before-build) option.
+
+- 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/pypa/cibuildwheel/issues/133#issuecomment-478288597) before activating a venv.

 ### Linux builds on Docker

-Linux wheels are built in the [`manylinux`/`musllinux` docker images](https://github.com/pypa/manylinux) to provide binary compatible wheels on Linux, according to [PEP 600](https://www.python.org/dev/peps/pep-0600/) / [PEP 656](https://www.python.org/dev/peps/pep-0656/). Because of this, when building with `cibuildwheel` on Linux, a few things should be taken into account:
+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 are not installed on the CI runner host, but rather should be installed inside of the Docker image - using `yum` for `manylinux2010` or `manylinux2014`, `apt-get` for `manylinux_2_24` and `apk` for `musllinux_1_1`, or manually. The same goes for environment variables that are potentially needed to customize the wheel building.
+- 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.

-    `cibuildwheel` supports this by providing the [`CIBW_ENVIRONMENT`](options.md#environment) and [`CIBW_BEFORE_ALL`](options.md#before-all) options to setup the build environment inside the running Docker image.
+- 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.

-   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 `/host` is not available on CircleCI due to their Docker policies.
-
-   Alternative Docker images can be specified with the `CIBW_MANYLINUX_*_IMAGE`/`CIBW_MUSLLINUX_*_IMAGE` options to allow for a custom, preconfigured build environment for the Linux builds. See [options](options.md#linux-image) for more details.
+- Alternative dockers images can be specified with the `CIBW_MANYLINUX_X86_64_IMAGE`, `CIBW_MANYLINUX_I686_IMAGE`, and `CIBW_MANYLINUX_PYPY_X86_64_IMAGE` options to allow for a custom, preconfigured build environment for the Linux builds. See [options](options.md#manylinux-image) for more details.

 ### Building macOS wheels for Apple Silicon {: #apple-silicon}

-`cibuildwheel` supports cross-compiling `universal2` and `arm64` wheels on `x86_64` runners. With the introduction of Apple Silicon, you now have several choices for wheels for Python 3.8+:
+`cibuildwheel` supports cross-compiling `universal2` and `arm64` wheels on `x86_64` runners. With the introduction of Apple Silicon, you now have several choices for wheels for Python 3.9+:

 #### `x86_64`

@@ -72,12 +80,11 @@ by default, and require opt-in by setting `CIBW_ARCHS_MACOS`.
 !!! note
    Your runner needs Xcode Command Line Tools 12.2 or later to build `universal2` or `arm64`.

-    Only CPython 3.8 and newer support `universal2` and `arm64` wheels.
+    So far, only CPython 3.9 supports `universal2` and `arm64` wheels.

 Here's an example GitHub Actions workflow with a job that builds for Apple Silicon:

 > .github/workflows/build_macos.yml
-
 ```yml
 {% include "../examples/github-apple-silicon.yml" %}
 ```
@@ -103,6 +110,62 @@ Linux), and the other architectures are emulated automatically.
 {% include "../examples/github-with-qemu.yml" %}
 ```

+### Building Apple Silicon wheels on Intel {: #apple-silicon}
+
+`cibuildwheel` supports cross-compiling `universal2` and `arm64` wheels on `x86_64` runners.
+
+These wheels are not built by default, but can be enabled by setting the [`CIBW_ARCHS_MACOS` option](options.md#archs) to `x86_64 arm64 universal2`. Cross-compilation is provided by the Xcode toolchain.
+
+!!! important
+    When cross-compiling on Intel, it is not possible to test `arm64` and the `arm64` part of a `universal2` wheel.
+
+    `cibuildwheel` will raise a warning to notify you of this - these warnings be be silenced by skipping testing on these platforms: `CIBW_TEST_SKIP: *_arm64 *_universal2:arm64`.
+
+Hopefully, this is a temporary situation. Once we have widely available Apple Silicon CI runners, we can build and test `arm64` and `universal2` wheels more natively. That's why `universal2` wheels are not yet built by default, and require opt-in by setting `CIBW_ARCHS_MACOS`.
+
+!!! note
+    Your runner image needs Xcode Command Line Tools 12.2 or later to build `universal2` and `arm64`.
+
+    So far, only CPython 3.9 supports `universal2` and `arm64` wheels.
+
+Here's an example GitHub Actions workflow with a job that builds for Apple Silicon:
+
+> .github/workflows/build_macos.yml
+
+```yml
+{% 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.
@@ -117,145 +180,7 @@ myextension = Extension(
 )
 ```

-### Automatic updates {: #automatic-updates}
-
-Selecting a moving target (like the latest release) is generally a bad idea in CI. If something breaks, you can't tell whether it was your code or an upstream update that caused the breakage, and in a worse-case scenario, it could occur during a release.
-There are two suggested methods for keeping cibuildwheel up to date that instead involve scheduled pull requests using GitHub's dependabot.
-
-#### Option 1: GitHub Action
-
-If you use GitHub Actions for builds, you can use cibuildwheel as an action:
-
-```yaml
-uses: pypa/cibuildwheel@v2.2.0
-```
-
-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.
-
-Then, your `.github/dependabot.yml` file could look like this:
-
-```yaml
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    ignore:
-      # Optional: Official actions have moving tags like v1;
-      # if you use those, you don't need updates.
-      - dependency-name: "actions/*"
-```
-
-#### Option 2: Requirement files
-
-The second option, and the only one that supports other CI systems, is using a `requirements-*.txt` file. The file should have a distinct name and have only one entry:
-
-```bash
-# requirements-cibw.txt
-cibuildwheel==2.2.0
-```
-
-Then your install step would have `python -m pip install -r requirements-cibw.txt` in it. Your `.github/dependabot.yml` file could look like this:
-
-```yaml
-version: 2
-updates:
-  - package-ecosystem: "pip"
-    directory: "/"
-    schedule:
-      interval: "daily"
-```
-
-This will also try to update other pins in all requirement files, so be sure you want to do that. The only control you have over the files used is via the directory option.
-
-
-### Alternatives to cibuildwheel options {: #cibw-options-alternatives}
-
-cibuildwheel provides lots of opportunities to configure the build
-environment. However, you  might consider adding this build configuration into
-the package itself - in general, this is preferred, because users of your
-package 'sdist' will also benefit.
-
-#### Missing build dependencies {: #cibw-options-alternatives-deps}
-
-If your build needs Python dependencies, rather than using CIBW_BEFORE_BUILD, it's best to add these to the
-[`build-system.requires`](https://www.python.org/dev/peps/pep-0518/#build-system-table)
-section of your pyproject.toml. For example, if your project requires Cython
-to build, your pyproject.toml might include a section like this:
-
-```toml
-[build-system]
-requires = [
-    "setuptools>=42",
-    "wheel",
-    "Cython",
-]
-
-build-backend = "setuptools.build_meta"
-```
-
-#### Actions you need to perform before building
-
-You might need to run some other commands before building, like running a
-script that performs codegen or downloading some data that's not stored in
-your source tree.
-
-Rather than using CIBW_BEFORE_ALL or CIBW_BEFORE_BUILD, you could incorporate
-these steps into your package's build process. For example, if you're using
-setuptools, you can add steps to your package's `setup.py` using a structure
-like this:
-
-    ```python
-    import subprocess
-    import setuptools
-    import setuptools.command.build_py
-
-
-    class BuildPyCommand(setuptools.command.build_py.build_py):
-      """Custom build command."""
-
-      def run(self):
-        # your custom build steps here
-        # e.g.
-        #   subprocess.run(['python', 'scripts/my_custom_script.py'], check=True)
-        setuptools.command.build_py.build_py.run(self)
-
-
-    setuptools.setup(
-        cmdclass={
-            'build_py': BuildPyCommand,
-        },
-        # Usual setup() args.
-        # ...
-    )
-    ```
-
-#### Compiler flags
-
-Your build might need some compiler flags to be set through environment variables.
-Consider incorporating these into your package, for example, in `setup.py` using [`extra_compile_args` or
-`extra_link_args`](https://docs.python.org/3/distutils/setupscript.html#other-options).
-
-### Python 2.7 / PyPy2 wheels
-
-See the [cibuildwheel version 1 docs](https://cibuildwheel.readthedocs.io/en/1.x/) for information about building Python 2.7 or PyPy2 wheels. There are lots of tricks and workaround there that are no longer required for Python 3 in cibuildwheel 2.
-
-## Troubleshooting
-
-If your wheel didn't compile, you might have a mistake in your config.
-
-To quickly test your config without doing a git push and waiting for your code to build on CI, you can [test the Linux build in a local Docker container](setup.md#local).
-
-### Missing dependencies
-
-You might need to install something on the build machine. You can do this with apt/yum, brew or choco, using the [`CIBW_BEFORE_ALL`](options.md#before-all) option. Or, for a Python dependency, consider [adding it to pyproject.toml](#cibw-options-alternatives-deps).
-
-### macOS: ModuleNotFoundError
-
-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.
-
-### macOS: 'No module named XYZ' errors after running cibuildwheel
+### 'No module named XYZ' errors after running cibuildwheel on macOS

 `cibuildwheel` on Mac installs the distributions from Python.org system-wide during its operation. This is necessary, but it can cause some confusing errors after cibuildwheel has finished.

@@ -279,35 +204,9 @@ python3 -m pip install twine
 python3 -m twine upload wheelhouse/*.whl
 ```

-### macOS: Passing DYLD_LIBRARY_PATH to delocate
+### 'ImportError: DLL load failed: The specific module could not be found' error on Windows

-macOS has built-in [System Integrity protections](https://developer.apple.com/library/archive/documentation/Security/Conceptual/System_Integrity_Protection_Guide/RuntimeProtections/RuntimeProtections.html) which limits the use of `DYLD_LIBRARY_PATH` and `LD_LIBRARY_PATH` so that it does not automatically pass to children processes. This means if you set `DYLD_LIBRARY_PATH` before running cibuildwheel, or even set it in `CIBW_ENVIRONMENT`, it will be stripped out of the environment before delocate is called.
-
-To work around this, use a different environment variable such as `REPAIR_LIBRARY_PATH` to store the library path, and set `DYLD_LIBRARY_PATH` in [`CIBW_REPAIR_WHEEL_COMMAND_MACOS`](https://cibuildwheel.readthedocs.io/en/stable/options/#repair-wheel-command), like this:
-
-!!! tab examples "Environment variables"
-
-    ```yaml
-    CIBW_REPAIR_WHEEL_COMMAND_MACOS: >
-        DYLD_LIBRARY_PATH=$REPAIR_LIBRARY_PATH delocate-listdeps {wheel} &&
-        DYLD_LIBRARY_PATH=$REPAIR_LIBRARY_PATH delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}
-    ```
-
-!!! tab examples "pyproject.toml"
-
-    ```toml
-    [tool.cibuildwheel.macos]
-    repair-wheel-command = [
-        "DYLD_LIBRARY_PATH=$REPAIR_LIBRARY_PATH delocate-listdeps {wheel}",
-        "DYLD_LIBRARY_PATH=$REPAIR_LIBRARY_PATH delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}"
-    ]
-    ```
-
-See [#816](https://github.com/pypa/cibuildwheel/issues/816), thanks to @phoerious for reporting.
-
-### Windows: 'ImportError: DLL load failed: The specific module could not be found'
-
-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 C extension with a newer compiler.
+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/pypa/cibuildwheel/issues/423) for details and references).

@@ -324,3 +223,56 @@ To add the `/d2FH4-` flag to a standard `setup.py` using `setuptools`, the `extr
 ```

 To investigate the dependencies of a C extension (i.e., the `.pyd` file, a DLL in disguise) on Windows, [Dependency Walker](http://www.dependencywalker.com/) is a great tool.
+
+
+### Automatic updates {: #automatic-updates}
+
+Selecting a moving target (like the latest release) is generally a bad idea in CI. If something breaks, you can't tell whether it was your code or an upstream update that caused the breakage, and in a worse-case scenario, it could occur during a release.
+There are two suggested methods for keeping cibuildwheel up to date that instead involve scheduled pull requests using GitHub's dependabot.
+
+#### Option 1: GitHub Action
+
+If you use GitHub Actions for builds, you can use cibuildwheel as an action:
+
+```yaml
+uses: pypa/cibuildwheel@v1.11.1.post1
+```
+
+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.
+
+Then, your `dependabot.yml` file could look like this:
+
+```yaml
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    ignore:
+      # Optional: Official actions have moving tags like v1;
+      # if you use those, you don't need updates.
+      - dependency-name: "actions/*"
+```
+
+#### Option 2: Requirement files
+
+The second option, and the only one that supports other CI systems, is using a `requirements-*.txt` file. The file should have a distinct name and have only one entry:
+
+```bash
+# requirements-cibw.txt
+cibuildwheel==1.11.1.post1
+```
+
+Then your install step would have `python -m pip install -r requirements-cibw.txt` in it. Your `dependabot.yml` file could look like this:
+
+```yaml
+version: 2
+updates:
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "daily"
+```
+
+This will also try to update other pins in all requirement files, so be sure you want to do that. The only control you have over the files used is via the directory option.
@@ -1,13 +0,0 @@
-import subprocess
-from typing import Any
-
-# Requires Python 3.7+
-
-
-def define_env(env: Any) -> None:
-    "Hook function for mkdocs-macros"
-
-    @env.macro
-    def subprocess_run(*args: str) -> str:
-        "Run a subprocess and return the stdout"
-        return subprocess.run(args, check=True, capture_output=True, text=True).stdout
@@ -2,79 +2,7 @@
 title: 'Setup'
 ---

-# Run cibuildwheel locally (optional) {: #local}
-
-Before getting to CI setup, it can be convenient to test cibuildwheel
-locally to quickly iterate and track down issues. If you've got
-[Docker](https://www.docker.com/products/docker-desktop) installed on
-your development machine, you can run a Linux build without even
-touching CI.
-
-!!! tip
-    You can run the Linux build on any platform. Even Windows can run
-    Linux containers these days, but there are a few  hoops to jump
-    through. Check [this document](https://docs.microsoft.com/en-us/virtualization/windowscontainers/quick-start/quick-start-windows-10-linux)
-    for more info.
-
-This is convenient as it's quicker to iterate, and because the builds are
-happening in manylinux Docker containers, they're perfectly reproducible.
-
-Install cibuildwheel and run a build like this:
-
-```sh
-pip install cibuildwheel
-cibuildwheel --platform linux
-```
-
-Or, using [pipx](https://github.com/pypa/pipx):
-```sh
-pipx run cibuildwheel --platform linux
-```
-
-You should see the builds taking place. You can experiment with options using environment variables or pyproject.toml.
-
-!!! tab "Environment variables"
-
-    cibuildwheel will read config from the environment. Syntax varies, depending on your shell:
-
-    > POSIX shell (Linux/macOS)
-
-    ```sh
-    # run a command to set up the build system
-    export CIBW_BEFORE_ALL='apt install libpng-dev'
-
-    cibuildwheel --platform linux
-    ```
-
-    > CMD (Windows)
-
-    ```bat
-    set CIBW_BEFORE_ALL='apt install libpng-dev'
-
-    cibuildwheel --platform linux
-    ```
-
-!!! tab "pyproject.toml"
-
-    If you write your options into [`pyproject.toml`](options.md#configuration-file), you can work on your options locally, and they'll be automatically picked up when running in CI.
-
-    > pyproject.toml
-
-    ```
-    [tool.cibuildwheel]
-    before-all = "apt install libpng-dev"
-    ```
-
-    Then invoke cibuildwheel, like:
-
-    ```console
-    cibuildwheel --platform linux
-    ```
-
-
-# Configure a CI service
-
-## GitHub Actions [linux/mac/windows] {: #github-actions}
+# GitHub Actions [linux/mac/windows] {: #github-actions}

 To build Linux, Mac, and Windows wheels using GitHub Actions, create a `.github/workflows/build_wheels.yml` file in your repo.

@@ -118,7 +46,7 @@ To build Linux, Mac, and Windows wheels using GitHub Actions, create a `.github/
          - uses: actions/checkout@v2

          - name: Build wheels
-            run: pipx run cibuildwheel==2.2.0
+            run: pipx run cibuildwheel==1.11.1.post1

          - uses: actions/upload-artifact@v2
            with:
@@ -153,7 +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==2.2.0
+            run: python -m pip install cibuildwheel==1.11.1.post1

          - name: Build wheels
            run: python -m cibuildwheel --output-dir wheelhouse
@@ -168,10 +96,10 @@ 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/pypa/cibuildwheel/blob/main/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}
+# Azure Pipelines [linux/mac/windows] {: #azure-pipelines}

 To build Linux, Mac, and Windows wheels on Azure Pipelines, create a `azure-pipelines.yml` file in your repo.

@@ -181,13 +109,16 @@ To build Linux, Mac, and Windows wheels on Azure Pipelines, create a `azure-pipe
 {% include "../examples/azure-pipelines-minimal.yml" %}
 ```

+!!! note
+    To support Python 3.5 on Windows, make sure to specify the use of `{vmImage: 'vs2017-win2016'}` on Windows, to ensure the required toolchain is available.
+
 Commit this file, enable building of your repo on Azure Pipelines, and push.

 Wheels will be stored for you and available through the Pipelines interface. For more info on this file, check out the [docs](https://docs.microsoft.com/en-us/azure/devops/pipelines/yaml-schema).

-## Travis CI [linux/windows] {: #travis-ci}
+# Travis CI [linux/mac/windows] {: #travis-ci}

-To build Linux and Windows wheels on Travis CI, create a `.travis.yml` file in your repo.
+To build Linux, Mac, and Windows wheels on Travis CI, create a `.travis.yml` file in your repo.

 > .travis.yml

@@ -195,13 +126,15 @@ To build Linux and Windows wheels on Travis CI, create a `.travis.yml` file in y
 {% include "../examples/travis-ci-minimal.yml" %}
 ```

+Note that building Windows Python 2.7 wheels on Travis is unsupported unless using a newer compiler [via a workaround](cpp_standards.md).
+
 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/pypa/cibuildwheel/blob/main/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}
+# AppVeyor [linux/mac/windows] {: #appveyor}

 To build Linux, Mac, and Windows wheels on AppVeyor, create an `appveyor.yml` file in your repo.

@@ -217,7 +150,7 @@ AppVeyor will store the built wheels for you - you can access them from the proj

 For more info on this config file, check out the [docs](https://www.appveyor.com/docs/).

-## CircleCI [linux/mac] {: #circleci}
+# CircleCI [linux/mac] {: #circleci}

 To build Linux and Mac wheels on CircleCI, create a `.circleci/config.yml` file in your repo,

@@ -234,7 +167,7 @@ Commit this file, enable building of your repo on CircleCI, and push.

 CircleCI will store the built wheels for you - you can access them from the project console. Check out the CircleCI [docs](https://circleci.com/docs/2.0/configuration-reference/#section=configuration) for more info on this config file.

-## Gitlab CI [linux] {: #gitlab-ci}
+# Gitlab CI [linux] {: #gitlab-ci}

 To build Linux wheels on Gitlab CI, create a `.gitlab-ci.yml` file in your repo,

@@ -250,13 +183,9 @@ Gitlab will store the built wheels for you - you can access them from the Pipeli

 > ⚠️ Got an error? Check the [FAQ](faq.md).

-# Next steps
-
-Once you've got the wheel building successfully, you might want to set up [testing](options.md#test-command) or [automatic releases to PyPI](deliver-to-pypi.md#automatic-method).
-
 <script>
  document.addEventListener('DOMContentLoaded', function() {
-    $('a.toctree-l3, .rst-content h2').each(function(i, el) {
+    $('.toctree-l2 a, .rst-content h1').each(function(i, el) {
      var text = $(el).text()
      var match = text.match(/(.*) \[([a-z/]+)\]/);

@@ -2,282 +2,11 @@
 title: Working examples
 ---

-<!-- START bin/projects.py -->
-
-<!-- this section is generated by bin/projects.py. Don't edit it directly, instead, edit docs/data/projects.yml -->
-
-| Name                              | CI | OS | Notes |
-|-----------------------------------|----|----|:------|
-| [scikit-learn][]                  | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The machine learning library. A complex but clean config using many of cibuildwheel's features to build a large project with Cython and C++ extensions.  |
-| [Tornado][]                       | ![travisci icon][] | ![apple icon][] ![linux icon][] | Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. |
-| [Matplotlib][]                    | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The venerable Matplotlib, a Python library with C++ portions |
-| [pytorch-fairseq][]               | ![github icon][] | ![apple icon][] ![linux icon][] | Facebook AI Research Sequence-to-Sequence Toolkit written in Python. |
-| [MyPy][]                          | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | MyPyC, the compiled component of MyPy. |
-| [uvloop][]                        | ![github icon][] | ![apple icon][] ![linux icon][] | Ultra fast asyncio event loop. |
-| [pydantic][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Data parsing and validation using Python type hints |
-| [psutil][]                        | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Cross-platform lib for process and system monitoring in Python |
-| [vaex][]                          | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Out-of-Core hybrid Apache Arrow/NumPy DataFrame for Python, ML, visualize and explore big tabular data at a billion rows per second 🚀 |
-| [Google Benchmark][]              | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | A microbenchmark support library |
-| [asyncpg][]                       | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | A fast PostgreSQL Database Client Library for Python/asyncio. |
-| [Apache Beam][]                   | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Apache Beam is a unified programming model for Batch and Streaming |
-| [scikit-image][]                  | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Image processing library. Uses cibuildwheel to build and test a project that uses Cython with platform-native code.  |
-| [twisted-iocpsupport][]           | ![github icon][] | ![windows icon][] | A submodule of Twisted that hooks into native C APIs using Cython. |
-| [cmake][]                         | ![github icon][] ![travisci icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Multitagged binary builds for all supported platforms, using cibw 2 config configuration. |
-| [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.  |
-| [duckdb][]                        | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | DuckDB is an in-process SQL OLAP Database Management System |
-| [cvxpy][]                         | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | A Python-embedded modeling language for convex optimization problems. |
-| [Triton][]                        | ![github icon][] | ![linux icon][] | Self hosted runners |
-| [PyOxidizer][]                    | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | A modern Python application packaging and distribution tool |
-| [pyzmq][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Python bindings for zeromq, the networking library. Uses Cython and CFFI.  |
-| [OpenSpiel][]                     | ![github icon][] | ![apple icon][] ![linux icon][] | OpenSpiel is a collection of environments and algorithms for research in general reinforcement learning and search/planning in games. |
-| [vispy][]                         | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Main repository for Vispy |
-| [River][]                         | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | 🌊 Online machine learning in Python |
-| [aiortc][]                        | ![github icon][] | ![apple icon][] ![linux icon][] | WebRTC and ORTC implementation for Python using asyncio. |
-| [Confluent client for Kafka][]    | ![travisci icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | setup in `tools/wheels/build-wheels.bat` |
-| [tinyobjloader][]                 | ![azurepipelines icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Tiny but powerful single file wavefront obj loader |
-| [coverage.py][]                   | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | The coverage tool for Python |
-| [PyCryptodome][]                  | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | A self-contained cryptographic library 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 |
-| [Dependency Injector][]           | ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Dependency injection framework for Python, uses Windows TravisCI |
-| [PyYAML][]                        | ![github icon][] | ![apple icon][] | Canonical source repository for PyYAML |
-| [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. |
-| [PyAV][]                          | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Pythonic bindings for FFmpeg's libraries. |
-| [OpenColorIO][]                   | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | A color management framework for visual effects and animation. |
-| [PyTables][]                      | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A Python package to manage extremely large amounts of data |
-| [Line Profiler][]                 | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Line-by-line profiling for Python |
-| [Pixar OpenTimelineIO][]          | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Open Source API and interchange format for editorial timeline information. |
-| [ruptures][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Extensive Cython + NumPy [pyproject.toml](https://github.com/deepcharles/ruptures/blob/master/pyproject.toml) example. |
-| [pikepdf][]                       | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | A Python library for reading and writing PDF, powered by qpdf |
-| [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 |
-| [DeepForest][]                    | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | An Efficient, Scalable and Optimized Python Framework for Deep Forest (2021.2.1) |
-| [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. |
-| [H3-py][]                         | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Python bindings for H3, a hierarchical hexagonal geospatial indexing system |
-| [python-rapidjson][]              | ![travisci icon][] ![gitlab icon][] ![appveyor icon][] | ![windows icon][] ![linux icon][] | Python wrapper around rapidjson |
-| [markupsafe][]                    | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Safely add untrusted strings to HTML/XML markup. |
-| [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 |
-| [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 |
-| [tgcalls][]                       | ![github icon][] | ![apple icon][] ![windows icon][] | Python `pybind11` binding to Telegram's WebRTC library with third party dependencies like `OpenSSL`, `MozJPEG`, `FFmpeg`, etc. |
-| [dd-trace-py][]                   | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Uses custom alternate arch emulation on GitHub |
-| [pybind11 python_example][]       | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Example pybind11 module built with a Python-based build system |
-| [cyvcf2][]                        | ![github icon][] | ![apple icon][] ![linux icon][] | cython + htslib == fast VCF and BCF processing |
-| [sourmash][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Quickly search, compare, and analyze genomic and metagenomic data sets. |
-| [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. |
-| [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 |
-| [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. |
-| [iDynTree][]                      | ![github icon][] | ![linux icon][] | Uses manylinux_2_24 |
-| [pybase64][]                      | ![github icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Fast Base64 encoding/decoding in Python |
-| [TgCrypto][]                      | ![travisci icon][] | ![windows icon][] ![apple icon][] ![linux icon][] | Includes a Windows Travis build. |
-| [etebase-py][]                    | ![travisci icon][] | ![linux icon][] | Python bindings to a Rust library using `setuptools-rust`, and `sccache` for improved speed. |
-| [fathon][]                        | ![travisci icon][] | ![apple icon][] ![linux icon][] | python package for DFA (Detrended Fluctuation Analysis) and related algorithms |
-| [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 |
-| [polaroid][]                      | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Full range of wheels for setuptools rust, with auto release and PyPI deploy. |
-| [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. |
-| [ninja][]                         | ![github icon][] ![travisci icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Multitagged binary builds for all supported platforms, using cibw 2 config configuration. |
-| [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 |
-| [clang-format][]                  | ![github icon][] | ![apple icon][] ![linux icon][] ![windows icon][] | Scikit-build wrapper around LLVM's CMake, all platforms, generic wheels. |
-| [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. |
-| [CorrectionLib][]                 | ![github icon][] | ![apple icon][] ![linux icon][] | Structured JSON powered correction library for HEP, designed for the CMS experiment at CERN. |
-| [SiPM][]                          | ![github icon][] | ![apple icon][] ![linux icon][] | High performance library for SiPM detectors simulation using C++17, OpenMP and AVX2 intrinsics. |
-| [pillow-heif][]                   | ![github icon][] | ![apple icon][] ![linux icon][] | Python CFFI binding to libheif library with third party dependencies like `libde265`, `x265`, `libaom` with test & publishing on PyPi. |
-
-[scikit-learn]: https://github.com/scikit-learn/scikit-learn
-[Tornado]: https://github.com/tornadoweb/tornado
-[Matplotlib]: https://github.com/matplotlib/matplotlib
-[pytorch-fairseq]: https://github.com/pytorch/fairseq
-[MyPy]: https://github.com/mypyc/mypy_mypyc-wheels
-[uvloop]: https://github.com/MagicStack/uvloop
-[pydantic]: https://github.com/samuelcolvin/pydantic
-[psutil]: https://github.com/giampaolo/psutil
-[vaex]: https://github.com/vaexio/vaex
-[Google Benchmark]: https://github.com/google/benchmark
-[asyncpg]: https://github.com/MagicStack/asyncpg
-[Apache Beam]: https://github.com/apache/beam
-[scikit-image]: https://github.com/scikit-image/scikit-image
-[twisted-iocpsupport]: https://github.com/twisted/twisted-iocpsupport
-[cmake]: https://github.com/scikit-build/cmake-python-distributions
-[websockets]: https://github.com/aaugustin/websockets
-[duckdb]: https://github.com/duckdb/duckdb
-[cvxpy]: https://github.com/cvxpy/cvxpy
-[Triton]: https://github.com/openai/triton
-[PyOxidizer]: https://github.com/indygreg/PyOxidizer
-[pyzmq]: https://github.com/zeromq/pyzmq
-[OpenSpiel]: https://github.com/deepmind/open_spiel
-[vispy]: https://github.com/vispy/vispy
-[River]: https://github.com/online-ml/river
-[aiortc]: https://github.com/aiortc/aiortc
-[Confluent client for Kafka]: https://github.com/confluentinc/confluent-kafka-python
-[tinyobjloader]: https://github.com/tinyobjloader/tinyobjloader
-[coverage.py]: https://github.com/nedbat/coveragepy
-[PyCryptodome]: https://github.com/Legrandin/pycryptodome
-[numexpr]: https://github.com/pydata/numexpr
-[Dependency Injector]: https://github.com/ets-labs/python-dependency-injector
-[PyYAML]: https://github.com/yaml/pyyaml
-[h5py]: https://github.com/h5py/h5py
-[PyAV]: https://github.com/PyAV-Org/PyAV
-[OpenColorIO]: https://github.com/AcademySoftwareFoundation/OpenColorIO
-[PyTables]: https://github.com/PyTables/PyTables
-[Line Profiler]: https://github.com/pyutils/line_profiler
-[Pixar OpenTimelineIO]: https://github.com/PixarAnimationStudios/OpenTimelineIO
-[ruptures]: https://github.com/deepcharles/ruptures
-[pikepdf]: https://github.com/pikepdf/pikepdf
-[aioquic]: https://github.com/aiortc/aioquic
-[google neuroglancer]: https://github.com/google/neuroglancer
-[DeepForest]: https://github.com/LAMDA-NJU/Deep-Forest
-[AutoPy]: https://github.com/autopilot-rs/autopy
-[Parselmouth]: https://github.com/YannickJadoul/Parselmouth
-[H3-py]: https://github.com/uber/h3-py
-[python-rapidjson]: https://github.com/python-rapidjson/python-rapidjson
-[markupsafe]: https://github.com/pallets/markupsafe
-[Rtree]: https://github.com/Toblerity/rtree
-[python-snappy]: https://github.com/andrix/python-snappy
-[pybind11 cmake_example]: https://github.com/pybind/cmake_example
-[KDEpy]: https://github.com/tommyod/KDEpy
-[tgcalls]: https://github.com/MarshalX/tgcalls
-[dd-trace-py]: https://github.com/DataDog/dd-trace-py
-[pybind11 python_example]: https://github.com/pybind/python_example
-[cyvcf2]: https://github.com/brentp/cyvcf2
-[sourmash]: https://github.com/dib-lab/sourmash
-[time-machine]: https://github.com/adamchainz/time-machine
-[matrixprofile]: https://github.com/matrix-profile-foundation/matrixprofile
-[CTranslate2]: https://github.com/OpenNMT/CTranslate2
-[iminuit]: https://github.com/scikit-hep/iminuit
-[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
-[iDynTree]: https://github.com/robotology/idyntree
-[pybase64]: https://github.com/mayeut/pybase64
-[TgCrypto]: https://github.com/pyrogram/tgcrypto
-[etebase-py]: https://github.com/etesync/etebase-py
-[fathon]: https://github.com/stfbnc/fathon
-[pyjet]: https://github.com/scikit-hep/pyjet
-[numpythia]: https://github.com/scikit-hep/numpythia
-[polaroid]: https://github.com/daggy1234/polaroid
-[Imagecodecs (fork)]: https://github.com/czaki/imagecodecs_build
-[ninja]: https://github.com/scikit-build/ninja-python-distributions
-[GSD]: https://github.com/glotzerlab/gsd
-[pybind11 scikit_build_example]: https://github.com/pybind/scikit_build_example
-[clang-format]: https://github.com/ssciwr/clang-format-wheel
-[pyinstrument_cext]: https://github.com/joerick/pyinstrument_cext
-[xmlstarlet]: https://github.com/dimitern/xmlstarlet
-[CorrectionLib]: https://github.com/cms-nanoAOD/correctionlib
-[SiPM]: https://github.com/EdoPro98/SimSiPM
-[pillow-heif]: https://github.com/bigcat88/pillow_heif
-
-[appveyor icon]: data/readme_icons/appveyor.svg
-[github icon]: data/readme_icons/github.svg
-[azurepipelines icon]: data/readme_icons/azurepipelines.svg
-[circleci icon]: data/readme_icons/circleci.svg
-[gitlab icon]: data/readme_icons/gitlab.svg
-[travisci icon]: data/readme_icons/travisci.svg
-[windows icon]: data/readme_icons/windows.svg
-[apple icon]: data/readme_icons/apple.svg
-[linux icon]: data/readme_icons/linux.svg
-
-<!-- scikit-learn: 47525, last pushed 0 days ago -->
-<!-- Tornado: 20226, last pushed 9 days ago -->
-<!-- Matplotlib: 14334, last pushed 0 days ago -->
-<!-- pytorch-fairseq: 14077, last pushed 0 days ago -->
-<!-- MyPy: 11462, last pushed 0 days ago -->
-<!-- uvloop: 8093, last pushed 5 days ago -->
-<!-- pydantic: 7761, last pushed 2 days ago -->
-<!-- psutil: 7724, last pushed 1 days ago -->
-<!-- vaex: 6633, last pushed 1 days ago -->
-<!-- Google Benchmark: 5790, last pushed 5 days ago -->
-<!-- asyncpg: 5107, last pushed 19 days ago -->
-<!-- Apache Beam: 5022, last pushed 0 days ago -->
-<!-- scikit-image: 4547, last pushed 2 days ago -->
-<!-- twisted-iocpsupport: 4386, last pushed 5 days ago -->
-<!-- cmake: 4195, last pushed 0 days ago -->
-<!-- websockets: 3600, last pushed 2 days ago -->
-<!-- duckdb: 3568, last pushed 0 days ago -->
-<!-- cvxpy: 3544, last pushed 2 days ago -->
-<!-- Triton: 3268, last pushed 0 days ago -->
-<!-- PyOxidizer: 3215, last pushed 10 days ago -->
-<!-- pyzmq: 2930, last pushed 0 days ago -->
-<!-- OpenSpiel: 2889, last pushed 4 days ago -->
-<!-- vispy: 2741, last pushed 2 days ago -->
-<!-- River: 2610, last pushed 2 days ago -->
-<!-- aiortc: 2606, last pushed 4 days ago -->
-<!-- Confluent client for Kafka: 2462, last pushed 3 days ago -->
-<!-- tinyobjloader: 2286, last pushed 1 days ago -->
-<!-- coverage.py: 1752, last pushed 0 days ago -->
-<!-- PyCryptodome: 1730, last pushed 0 days ago -->
-<!-- numexpr: 1657, last pushed 15 days ago -->
-<!-- Dependency Injector: 1615, last pushed 4 days ago -->
-<!-- PyYAML: 1615, last pushed 0 days ago -->
-<!-- h5py: 1594, last pushed 2 days ago -->
-<!-- PyAV: 1357, last pushed 14 days ago -->
-<!-- OpenColorIO: 1168, last pushed 1 days ago -->
-<!-- PyTables: 1065, last pushed 14 days ago -->
-<!-- Line Profiler: 912, last pushed 3 days ago -->
-<!-- Pixar OpenTimelineIO: 907, last pushed 0 days ago -->
-<!-- ruptures: 811, last pushed 2 days ago -->
-<!-- pikepdf: 763, last pushed 1 days ago -->
-<!-- aioquic: 749, last pushed 13 days ago -->
-<!-- google neuroglancer: 689, last pushed 6 days ago -->
-<!-- DeepForest: 663, last pushed 79 days ago -->
-<!-- AutoPy: 578, last pushed 115 days ago -->
-<!-- Parselmouth: 567, last pushed 6 days ago -->
-<!-- H3-py: 436, last pushed 33 days ago -->
-<!-- python-rapidjson: 429, last pushed 107 days ago -->
-<!-- markupsafe: 426, last pushed 4 days ago -->
-<!-- Rtree: 421, last pushed 4 days ago -->
-<!-- python-snappy: 407, last pushed 81 days ago -->
-<!-- pybind11 cmake_example: 315, last pushed 4 days ago -->
-<!-- KDEpy: 302, last pushed 129 days ago -->
-<!-- tgcalls: 275, last pushed 20 days ago -->
-<!-- dd-trace-py: 272, last pushed 1 days ago -->
-<!-- pybind11 python_example: 271, last pushed 4 days ago -->
-<!-- cyvcf2: 269, last pushed 40 days ago -->
-<!-- sourmash: 262, last pushed 0 days ago -->
-<!-- time-machine: 214, last pushed 1 days ago -->
-<!-- matrixprofile: 201, last pushed 107 days ago -->
-<!-- CTranslate2: 188, last pushed 2 days ago -->
-<!-- iminuit: 185, last pushed 1 days ago -->
-<!-- jq.py: 176, last pushed 69 days ago -->
-<!-- Tokenizer: 156, last pushed 2 days ago -->
-<!-- PyGLM: 119, last pushed 11 days ago -->
-<!-- bx-python: 106, last pushed 93 days ago -->
-<!-- boost-histogram: 92, last pushed 6 days ago -->
-<!-- iDynTree: 89, last pushed 7 days ago -->
-<!-- pybase64: 74, last pushed 3 days ago -->
-<!-- TgCrypto: 73, last pushed 7 days ago -->
-<!-- etebase-py: 52, last pushed 279 days ago -->
-<!-- fathon: 39, last pushed 130 days ago -->
-<!-- pyjet: 31, last pushed 4 days ago -->
-<!-- numpythia: 31, last pushed 4 days ago -->
-<!-- polaroid: 25, last pushed 8 days ago -->
-<!-- Imagecodecs (fork): 21, last pushed 46 days ago -->
-<!-- ninja: 19, last pushed 1 days ago -->
-<!-- GSD: 18, last pushed 2 days ago -->
-<!-- pybind11 scikit_build_example: 17, last pushed 4 days ago -->
-<!-- clang-format: 15, last pushed 3 days ago -->
-<!-- pyinstrument_cext: 10, last pushed 2 days ago -->
-<!-- xmlstarlet: 7, last pushed 80 days ago -->
-<!-- CorrectionLib: 7, last pushed 3 days ago -->
-<!-- SiPM: 4, last pushed 0 days ago -->
-<!-- pillow-heif: 3, last pushed 2 days ago -->
-
-<!-- END bin/projects.py -->
-
-> 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>
+{%
+   include-markdown "../README.md"
+   start="<!--working-examples-start-->"
+   end="<!--working-examples-end-->"
+%}

 <style>
 .wy-nav-content {
@@ -12,7 +12,7 @@ stack: python 3.7
 init:
 - cmd: set PATH=C:\Python37;C:\Python37\Scripts;%PATH%

-install: python -m pip install cibuildwheel==2.2.0
+install: python -m pip install cibuildwheel==1.11.1.post1

 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==2.2.0
+        pip3 install cibuildwheel==1.11.1.post1
      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==2.2.0
+        python3 -m pip install cibuildwheel==1.11.1.post1
      displayName: Install dependencies
    - bash: cibuildwheel --output-dir wheelhouse .
      displayName: Build wheels
@@ -34,7 +34,7 @@ jobs:
    - bash: |
        set -o errexit
        python -m pip install --upgrade pip
-        pip install cibuildwheel==2.2.0
+        pip install cibuildwheel==1.11.1.post1
      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==2.2.0
+            pip3 install --user cibuildwheel==1.11.1.post1
            cibuildwheel --output-dir wheelhouse
      - store_artifacts:
          path: wheelhouse/
@@ -19,13 +19,13 @@ jobs:
  osx-wheels:
    working_directory: ~/osx-wheels
    macos:
-      xcode: 12.5.1
+      xcode: 10.0.0
    steps:
      - checkout
      - run:
          name: Build the OS X wheels.
          command: |
-            pip3 install cibuildwheel==2.2.0
+            pip3 install cibuildwheel==1.11.1.post1
            cibuildwheel --output-dir wheelhouse
      - store_artifacts:
          path: wheelhouse/
@@ -10,7 +10,7 @@ jobs:
      - uses: actions/checkout@v2

      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.2.0
+        uses: pypa/cibuildwheel@v1.11.1.post1
        env:
          CIBW_ARCHS_MACOS: x86_64 universal2

@@ -27,7 +27,7 @@ jobs:
          python-version: '3.8'

      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.2.0
+        uses: pypa/cibuildwheel@v1.11.1.post1

      - uses: actions/upload-artifact@v2
        with:
@@ -64,7 +64,7 @@ jobs:
          name: artifact
          path: dist

-      - uses: pypa/gh-action-pypi-publish@v1.4.2
+      - uses: pypa/gh-action-pypi-publish@master
        with:
          user: __token__
          password: ${{ secrets.pypi_password }}
@@ -14,7 +14,7 @@ jobs:
      - uses: actions/checkout@v2

      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.2.0
+        uses: pypa/cibuildwheel@v1.11.1.post1
        # to supply options, put them in 'env', like:
        # env:
        #   CIBW_SOME_OPTION: value
@@ -25,7 +25,7 @@ jobs:
          platforms: all

      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.2.0
+        uses: pypa/cibuildwheel@v1.11.1.post1
        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==2.2.0
+    - python -m pip install cibuildwheel==1.11.1.post1
    - cibuildwheel --output-dir wheelhouse
  artifacts:
    paths:
@@ -9,6 +9,9 @@ jobs:
  include:
    # perform a linux build
    - services: docker
+    # and a mac build
+    - os: osx
+      language: shell
    # and a windows build
    - os: windows
      language: shell
@@ -19,7 +22,7 @@ jobs:
        - ln -s /c/Python38/python.exe /c/Python38/python3.exe

 install:
-  - python3 -m pip install cibuildwheel==2.2.0
+  - python3 -m pip install cibuildwheel==1.11.1.post1

 script:
  # build the wheels, put them into './wheelhouse'
@@ -15,6 +15,9 @@ jobs:
    # perform a linux S390X build
    - services: docker
      arch: s390x
+    # and a mac build
+    - os: osx
+      language: shell
    # and a windows build
    - os: windows
      language: shell
@@ -25,7 +28,7 @@ jobs:
        - ln -s /c/Python38/python.exe /c/Python38/python3.exe

 install:
-  - python3 -m pip install cibuildwheel==2.2.0
+  - python3 -m pip install cibuildwheel==1.11.1.post1

 script:
  # build the wheels, put them into './wheelhouse'
@@ -1,7 +1,7 @@
 # In this configuration, the package is tested against multiple versions of python
 # on Linux and on one version of Python on Windows. If and only if all tests pass
 # will the wheels be built and deployed. Further, deployment is only initiated if
-# the current branch is "main", the current commit is tagged, and the current
+# the current branch is "master", the current commit is tagged, and the current
 # repo is yours (e.g. it won't run on a Pull Request). For convenience, a source
 # distribution is also created.

@@ -57,7 +57,17 @@ jobs:
    - stage: deploy
      name: Build and deploy Linux wheels
      services: docker
-      install: python3 -m pip install cibuildwheel==2.2.0
+      install: python3 -m pip install cibuildwheel==1.11.1.post1
+      script: python3 -m cibuildwheel --output-dir wheelhouse
+      after_success: |
+        python3 -m pip install twine
+        python3 -m twine upload --skip-existing wheelhouse/*.whl
+    # Deploy on mac
+    - stage: deploy
+      name: Build and deploy macOS wheels
+      os: osx
+      language: shell
+      install: python3 -m pip install cibuildwheel==1.11.1.post1
      script: python3 -m cibuildwheel --output-dir wheelhouse
      after_success: |
        python3 -m pip install twine
@@ -67,7 +77,7 @@ jobs:
      name: Build and deploy Windows wheels
      os: windows
      language: shell
-      install: python3 -m pip install cibuildwheel==2.2.0
+      install: python3 -m pip install cibuildwheel==1.11.1.post1
      script: python3 -m cibuildwheel --output-dir wheelhouse
      after_success: |
        python3 -m pip install twine
@@ -41,7 +41,3 @@ markdown_extensions:
 plugins:
  - include-markdown
  - search
-  - macros:
-      module_name: docs/main
-      j2_variable_start_string: «
-      j2_variable_end_string: »
@@ -1,101 +0,0 @@
-import shutil
-import sys
-from pathlib import Path
-
-import nox
-
-nox.options.sessions = ["lint", "tests"]
-
-PYTHON_ALL_VERSIONS = ["3.6", "3.7", "3.8", "3.9"]
-
-DIR = Path(__file__).parent.resolve()
-
-
-@nox.session
-def tests(session: nox.Session) -> None:
-    """
-    Run the unit and regular tests.
-    """
-    unit_test_args = ["--run-docker"] if sys.platform.startswith("linux") else []
-    session.install("-e", ".[test]")
-    if session.posargs:
-        session.run("pytest", *session.posargs)
-    else:
-        session.run("pytest", "unit_test", *unit_test_args)
-        session.run("pytest", "test", "-x", "--durations", "0", "--timeout=2400", "test")
-
-
-@nox.session
-def lint(session: nox.Session) -> None:
-    """
-    Run the linter.
-    """
-    session.install("pre-commit")
-    session.run("pre-commit", "run", "--all-files", *session.posargs)
-
-
-@nox.session(python=PYTHON_ALL_VERSIONS)
-def update_constraints(session: nox.Session) -> None:
-    """
-    Update the dependencies inplace.
-    """
-    session.install("requests", "pip-tools")
-    session.run("python", "bin/update_dependencies.py")
-
-
-@nox.session
-def update_pins(session: nox.Session) -> None:
-    """
-    Update the python and docker pins version inplace.
-    """
-    session.install("-e", ".[bin]")
-    session.run("python", "bin/update_pythons.py", "--force")
-    session.run("python", "bin/update_docker.py")
-
-
-@nox.session
-def update_proj(session: nox.Session) -> None:
-    """
-    Update the README inplace.
-    """
-    session.install("-e", ".[bin]")
-    session.run(
-        "python",
-        "bin/projects.py",
-        "docs/data/projects.yml",
-        *session.posargs,
-    )
-
-
-@nox.session
-def docs(session: nox.Session) -> None:
-    """
-    Build the docs.
-    """
-    session.install("-e", ".[docs]")
-
-    if session.posargs:
-        if "serve" in session.posargs:
-            session.run("mkdocs", "serve")
-        else:
-            session.error("Unrecognized args, use 'serve'")
-    else:
-        session.run("mkdocs", "build")
-
-
-@nox.session
-def build(session: nox.Session) -> None:
-    """
-    Build an SDist and wheel.
-    """
-
-    build_p = DIR.joinpath("build")
-    if build_p.exists():
-        shutil.rmtree(build_p)
-
-    dist_p = DIR.joinpath("dist")
-    if dist_p.exists():
-        shutil.rmtree(dist_p)
-
-    session.install("build")
-    session.run("python", "-m", "build")
@@ -6,64 +6,6 @@ requires = [

 build-backend = "setuptools.build_meta"

-
 [tool.black]
 line-length = 100
 target-version = ['py36', 'py37', 'py38', 'py39']
-
-
-[tool.isort]
-profile = "black"
-multi_line_output = 3
-
-
-[tool.pytest.ini_options]
-minversion = 6.0
-junit_family = "xunit2"
-testpaths = [
-    "test",
-    "unit_test",
-]
-
-
-[tool.mypy]
-python_version = 3.7
-files = [
-    "cibuildwheel/*.py",
-    "test/**/*.py",
-    "unit_test/**/*.py",
-    "bin/*.py"
-]
-warn_unused_configs = true
-warn_redundant_casts = true
-no_implicit_reexport = true
-strict_equality = true
-warn_unused_ignores = true
-check_untyped_defs = true
-
-disallow_subclassing_any = true
-disallow_any_generics = true
-warn_return_any = true
-no_implicit_optional = true
-
-[[tool.mypy.overrides]]
-module = "cibuildwheel.*"
-disallow_untyped_defs = true
-disallow_untyped_calls = true
-disallow_incomplete_defs = true
-disallow_untyped_decorators = true
-
-[[tool.mypy.overrides]]
-module = [
-    "setuptools",
-    "pytest", # ignored in pre-commit to speed up check
-    "bashlex",
-    "bracex",
-    "importlib_resources",
-    "nox",
-    "github",
-]
-ignore_missing_imports = true
-
-[tool.pycln]
-all = true
@@ -1,13 +1,13 @@
 [metadata]
 name = cibuildwheel
-version = 2.2.0
+version = 1.11.1.post1
 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
-license = BSD-2-Clause
+license = BSD
 license_file = LICENSE
 classifiers =
    Development Status :: 5 - Production/Stable
@@ -20,7 +20,6 @@ classifiers =
    Programming Language :: Python :: 3.7
    Programming Language :: Python :: 3.8
    Programming Language :: Python :: 3.9
-    Programming Language :: Python :: 3.10
    Programming Language :: Python :: Implementation :: CPython
    Topic :: Software Development :: Build Tools
 keywords = ci,wheel,packaging,pypi,travis,appveyor,macos,linux,windows
@@ -35,17 +34,12 @@ install_requires =
    bracex
    certifi
    packaging
-    tomli
-    dataclasses;python_version < '3.7'
+    toml
    typing_extensions;python_version < '3.8'
 python_requires = >=3.6
 include_package_data = True
 zip_safe = False

-[options.packages.find]
-include =
-    cibuildwheel
-
 [options.entry_points]
 console_scripts =
    cibuildwheel = cibuildwheel.__main__:main
@@ -53,6 +47,10 @@ console_scripts =
 [options.package_data]
 cibuildwheel = resources/*

+[options.packages.find]
+include =
+    cibuildwheel
+
 [flake8]
 ignore = E501,W503,E741,E226,B950,E203
 select = C,E,F,W,B,B9
@@ -67,3 +65,57 @@ exclude =
    env??/,
    .venv/,
    site/
+
+[tool:pytest]
+junit_family = xunit2
+testpaths =
+    test
+    unit_test
+
+[mypy]
+python_version = 3.7
+files = cibuildwheel/*.py,test/**/*.py,unit_test/**/*.py,bin/*.py
+warn_unused_configs = True
+warn_redundant_casts = True
+
+[mypy-test.*,mypy-unit_test.*]
+check_untyped_defs = True
+
+[mypy-cibuildwheel.*]
+disallow_any_generics = True
+disallow_subclassing_any = True
+disallow_untyped_calls = True
+disallow_untyped_defs = True
+disallow_incomplete_defs = True
+check_untyped_defs = True
+disallow_untyped_decorators = True
+no_implicit_optional = True
+warn_unused_ignores = True
+warn_return_any = True
+no_implicit_reexport = True
+strict_equality = True
+
+[mypy-setuptools.*]
+ignore_missing_imports = True
+
+# Ignored for pre-commit to speed up check
+# Not ignored if manually running and pytest installed
+[mypy-pytest.*]
+ignore_missing_imports = True
+
+[mypy-bashlex.*]
+ignore_missing_imports = True
+
+# Has type stubs, but no pyproject.toml or .pyi files in the wheel.
+[mypy-toml.*]
+ignore_missing_imports = True
+
+[mypy-bracex.*]
+ignore_missing_imports = True
+
+[mypy-importlib_resources.*]
+ignore_missing_imports = True
+
+[tool:isort]
+profile = black
+multi_line_output = 3
@@ -5,43 +5,27 @@ extras = {
        "mkdocs-include-markdown-plugin==2.8.0",
        "mkdocs==1.0.4",
        "pymdown-extensions",
-        "mkdocs-macros-plugin",
    ],
    "test": [
        "jinja2",
-        "pytest>=6",
+        "pytest>=4",
        "pytest-timeout",
-        "pytest-xdist; sys_platform == 'linux'",
    ],
-    "bin": [
+    "dev": [
        "click",
        "ghapi",
+        "mypy>=0.800",
+        "packaging>=20.8",
        "pip-tools",
        "pygithub",
        "pyyaml",
        "requests",
        "rich>=9.6",
-        "packaging>=21.0",
-    ],
-    "mypy": [
-        "mypy>=0.901",
-        "types-jinja2",
-        "types-certifi",
-        "types-toml",
-        "types-jinja2",
-        "types-pyyaml",
-        "types-click",
-        "types-requests",
-        "types-toml",
+        "typing-extensions",
    ],
 }

-extras["dev"] = [
-    *extras["mypy"],
-    *extras["test"],
-    *extras["bin"],
-]
-
 extras["all"] = sum(extras.values(), [])
+extras["dev"] += extras["test"]

 setup(extras_require=extras)
@@ -1,9 +1,7 @@
-from typing import Dict
-
 import pytest


-def pytest_addoption(parser) -> None:
+def pytest_addoption(parser):
    parser.addoption(
        "--run-emulation", action="store_true", default=False, help="run emulation tests"
    )
@@ -13,7 +11,7 @@ def pytest_configure(config):
    config.addinivalue_line("markers", "emulation: mark test requiring qemu binfmt_misc to run")


-def pytest_collection_modifyitems(config, items) -> None:
+def pytest_collection_modifyitems(config, items):
    if config.getoption("--run-emulation"):
        # --run-emulation given in cli: do not skip emulation tests
        return
@@ -21,10 +19,3 @@ def pytest_collection_modifyitems(config, items) -> None:
    for item in items:
        if "emulation" in item.keywords:
            item.add_marker(skip_emulation)
-
-
-@pytest.fixture(
-    params=[{"CIBW_BUILD_FRONTEND": "pip"}, {"CIBW_BUILD_FRONTEND": "build"}], ids=["pip", "build"]
-)
-def build_frontend_env(request) -> Dict[str, str]:
-    return request.param  # type: ignore[no-any-return]
@@ -1,3 +1,4 @@
+import platform
 import textwrap

 import pytest
@@ -18,12 +19,12 @@ basic_project = test_projects.new_c_project(
 )


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

    # build the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=build_frontend_env)
+    actual_wheels = utils.cibuildwheel_run(project_dir)

    # check that the expected wheels are produced
    expected_wheels = utils.expected_wheels("spam", "0.1.0")
@@ -52,10 +53,16 @@ def test_build_identifiers(tmp_path):

    # check that the number of expected wheels matches the number of build
    # identifiers
-    expected_wheels = utils.expected_wheels("spam", "0.1.0")
-    build_identifiers = utils.cibuildwheel_get_build_identifiers(
-        project_dir, prerelease_pythons=True
-    )
-    assert len(expected_wheels) == len(
-        build_identifiers
-    ), f"{expected_wheels} vs {build_identifiers}"
+    # 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
+        ]
+    else:
+        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)
@@ -25,13 +25,8 @@ project_with_before_build_asserts = test_projects.new_c_project(
            stored_executable = f.read()
        print('stored_executable', stored_executable)
        print('sys.executable', sys.executable)
-
        # windows/mac are case insensitive
-        stored_path = os.path.realpath(stored_executable).lower()
-        current_path = os.path.realpath(sys.executable).lower()
-
-        # TODO: This is not valid in an virtual environment
-        assert stored_path == current_path, '{0} != {1}'.format(stored_path, current_path)
+        assert os.path.realpath(stored_executable).lower() == os.path.realpath(sys.executable).lower()
        """
    )
 )
@@ -49,11 +49,11 @@ def test(tmp_path):
            # 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": "pytest",
+            "CIBW_TEST_REQUIRES": "nose",
            # the 'false ||' bit is to ensure this command runs in a shell on
            # mac/linux.
-            "CIBW_TEST_COMMAND": "false || pytest {project}/test",
-            "CIBW_TEST_COMMAND_WINDOWS": "pytest {project}/test",
+            "CIBW_TEST_COMMAND": "false || nosetests {project}/test",
+            "CIBW_TEST_COMMAND_WINDOWS": "nosetests {project}/test",
        },
    )

@@ -5,11 +5,11 @@ from . import test_projects, utils
 project_with_skip_asserts = test_projects.new_c_project(
    setup_py_add=textwrap.dedent(
        r"""
-        # explode if run on PyPyor Python 3.7 (these should be skipped)
-        if sys.implementation.name != "cpython":
-            raise Exception("Only CPython shall be built")
+        # 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("CPython 3.7 should be skipped")
+            raise Exception("Python 3.7 should be skipped")
        """
    )
 )
@@ -23,12 +23,12 @@ def test(tmp_path):
    actual_wheels = utils.cibuildwheel_run(
        project_dir,
        add_env={
-            "CIBW_BUILD": "cp3*-*",
+            "CIBW_BUILD": "cp3?-*",
            "CIBW_SKIP": "cp37-*",
        },
    )

-    # check that we got the right wheels. There should be no PyPy or 3.7.
+    # 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)
    ]
@@ -36,18 +36,38 @@ spam_system(PyObject *self, PyObject *args)
 }

 /* Module initialization */
+
+#if PY_MAJOR_VERSION >= 3
+    #define MOD_INIT(name) PyMODINIT_FUNC PyInit_##name(void)
+    #define MOD_DEF(m, name, doc, methods, module_state_size) \
+        static struct PyModuleDef moduledef = { \
+            PyModuleDef_HEAD_INIT, name, doc, module_state_size, methods, }; \
+        m = PyModule_Create(&moduledef);
+    #define MOD_RETURN(m) return m;
+#else
+    #define MOD_INIT(name) PyMODINIT_FUNC init##name(void)
+    #define MOD_DEF(m, name, doc, methods, module_state_size) \
+        m = Py_InitModule3(name, methods, doc);
+    #define MOD_RETURN(m) return;
+#endif
+
 static PyMethodDef module_methods[] = {
    {"system", (PyCFunction)spam_system, METH_VARARGS,
     "Execute a shell command."},
    {NULL}  /* Sentinel */
 };

-PyMODINIT_FUNC PyInit_spam(void)
+MOD_INIT(spam)
 {
-    static struct PyModuleDef moduledef = {
-        PyModuleDef_HEAD_INIT, "spam", "Example module", -1, module_methods,
-    };
-    return PyModule_Create(&moduledef);
+    PyObject* m;
+
+    MOD_DEF(m,
+            "spam",
+            "Example module",
+            module_methods,
+            -1)
+
+    MOD_RETURN(m)
 }
 """

@@ -67,8 +87,15 @@ def test_cpp11(tmp_path):

    cpp11_project.generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir)
-    expected_wheels = [w for w in utils.expected_wheels("spam", "0.1.0")]
+    # VC++ for Python 2.7 does not support modern standards
+    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
+    ]

    assert set(actual_wheels) == set(expected_wheels)

@@ -86,17 +113,27 @@ def test_cpp14(tmp_path):

    cpp14_project.generate(project_dir)

-    actual_wheels = utils.cibuildwheel_run(project_dir)
-    expected_wheels = [w for w in utils.expected_wheels("spam", "0.1.0")]
+    # 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"}
+
+    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
+    ]

    assert set(actual_wheels) == set(expected_wheels)


 cpp17_project = cpp_test_project.copy()

-cpp17_project.template_context["extra_compile_args"] = [
-    "/std:c++17" if utils.platform == "windows" else "-std=c++17"
-]
+# 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[
    "spam_cpp_top_level_add"
 ] = r"""
@@ -116,7 +153,7 @@ def test_cpp17(tmp_path):

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

    if utils.platform == "macos":
        add_env["MACOSX_DEPLOYMENT_TARGET"] = "10.13"
@@ -125,7 +162,61 @@ def test_cpp17(tmp_path):
    expected_wheels = [
        w
        for w in utils.expected_wheels("spam", "0.1.0", macosx_deployment_target="10.13")
-        if "-pp" not in w
+        if "cp27-cp27m-win" not in w and "-pp" not in w
+    ]
+
+    assert set(actual_wheels) == set(expected_wheels)
+
+
+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 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"
+    cpp17_project.generate(project_dir)
+
+    # VC++ for Python 2.7 (i.e., MSVC 9) does not support modern standards
+    # This is a workaround which forces distutils/setupstools to a newer version
+    # Wheels compiled need a more modern C++ redistributable installed, which is not
+    # 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"}
+
+    # Use existing setuptools code to run Visual Studio's vcvarsall.bat and get the
+    # necessary environment variables, since running vcvarsall.bat in a subprocess
+    # does not keep the relevant environment variables
+    # There are different environment variables for 32-bit/64-bit targets, so we
+    # need to run cibuildwheel twice, once for 32-bit with `vcvarsall.bat x86, and
+    # once for 64-bit with `vcvarsall.bat x64`
+    # In a normal CI setup, just run vcvarsall.bat before running cibuildwheel and set
+    # DISTUTILS_USE_SDK and MSSdk
+    import setuptools
+
+    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"]:
+            env[vcvar] = vcvarsall_env[vcvar]
+        return env
+
+    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"
+    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
    ]

    assert set(actual_wheels) == set(expected_wheels)
@@ -47,28 +47,39 @@ def get_versions_from_constraint_file(constraint_file):
    }


-@pytest.mark.parametrize("python_version", ["3.6", "3.8", "3.9"])
-def test_pinned_versions(tmp_path, python_version, build_frontend_env):
+@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 == "windows" and python_version == "2.7":
+        pytest.skip("Windows requires a workaround")
+
+    is_macos_11_or_later = utils.platform == "macos" and utils.get_macos_version() >= (10, 16)
+
+    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_with_expected_version_checks.generate(project_dir)

    build_environment = {}

-    if python_version == "3.6":
+    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-*"
-    elif python_version == "3.8":
-        constraint_filename = "constraints-python38.txt"
-        build_pattern = "[cp]p38-*"
    else:
        constraint_filename = "constraints.txt"
-        build_pattern = "[cp]p39-*"
+        build_pattern = "[cp]p38-*"

    constraint_file = cibuildwheel.util.resources_dir / constraint_filename
    constraint_versions = get_versions_from_constraint_file(constraint_file)
@@ -85,12 +96,19 @@ def test_pinned_versions(tmp_path, python_version, build_frontend_env):
        add_env={
            "CIBW_BUILD": build_pattern,
            "CIBW_ENVIRONMENT": cibw_environment_option,
-            **build_frontend_env,
        },
    )

    # also check that we got the right wheels
-    if python_version == "3.6":
+    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
        ]
@@ -98,31 +116,31 @@ def test_pinned_versions(tmp_path, python_version, build_frontend_env):
        expected_wheels = [
            w for w in utils.expected_wheels("spam", "0.1.0") if "-cp38" in w or "-pp38" in w
        ]
-    elif python_version == "3.9":
-        expected_wheels = [
-            w for w in utils.expected_wheels("spam", "0.1.0") if "-cp39" in w or "-pp39" in w
-        ]
    else:
        raise ValueError("unhandled python version")

    assert set(actual_wheels) == set(expected_wheels)


-def test_dependency_constraints_file(tmp_path, build_frontend_env):
+@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 == "windows" and python_version == "2.7":
+        pytest.skip("Windows + Travis CI requires a workaround")
+
    project_dir = tmp_path / "project"
    project_with_expected_version_checks.generate(project_dir)

    tool_versions = {
        "pip": "20.0.2",
-        "setuptools": "53.0.0",
+        "setuptools": "44.0.0" if python_version == "2.7" else "46.0.0",
        "wheel": "0.34.2",
-        "virtualenv": "20.0.35",
+        "virtualenv": "20.0.10",
    }

-    constraints_file = tmp_path / "constraints file.txt"
+    constraints_file = tmp_path / "constraints.txt"
    constraints_file.write_text(
        textwrap.dedent(
            """
@@ -130,7 +148,6 @@ def test_dependency_constraints_file(tmp_path, build_frontend_env):
            setuptools=={setuptools}
            wheel=={wheel}
            virtualenv=={virtualenv}
-            importlib-metadata<3,>=0.12; python_version < "3.8"
            """.format(
                **tool_versions
            )
@@ -149,13 +166,22 @@ def test_dependency_constraints_file(tmp_path, build_frontend_env):
    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),
-            **build_frontend_env,
        },
    )

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

    assert set(actual_wheels) == set(expected_wheels)
@@ -37,14 +37,14 @@ def test(tmp_path):
        add_env={
            "CIBW_MANYLINUX_X86_64_IMAGE": "dockcross/manylinux2010-x64",
            "CIBW_MANYLINUX_I686_IMAGE": "dockcross/manylinux2010-x86",
-            "CIBW_BUILD": "cp3{6,7,8,9}-manylinux*",
+            "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", musllinux_versions=[])
-        if "-cp36-" in w or "-cp37-" in w or "-cp38-" in w or "-cp39-" in 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)
@@ -57,7 +57,6 @@ def test(manylinux_image, tmp_path):
    # 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_BUILD": "*-manylinux*",
        "CIBW_ENVIRONMENT": 'CFLAGS="$CFLAGS -O0 -Werror=implicit-function-declaration"',
        "CIBW_MANYLINUX_X86_64_IMAGE": manylinux_image,
        "CIBW_MANYLINUX_I686_IMAGE": manylinux_image,
@@ -65,27 +64,21 @@ def test(manylinux_image, tmp_path):
        "CIBW_MANYLINUX_AARCH64_IMAGE": manylinux_image,
        "CIBW_MANYLINUX_PPC64LE_IMAGE": manylinux_image,
        "CIBW_MANYLINUX_S390X_IMAGE": manylinux_image,
-        "CIBW_MANYLINUX_PYPY_AARCH64_IMAGE": manylinux_image,
-        "CIBW_MANYLINUX_PYPY_I686_IMAGE": manylinux_image,
    }
-    if manylinux_image in {"manylinux1"}:
-        # We don't have a manylinux1 image for PyPy & CPython 3.10 and above
-        add_env["CIBW_SKIP"] = "pp* cp31*"
-
+    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"}:
+        # We don't have a manylinux2014 / 'manylinux_2_24' image for PyPy (yet?)
+        # 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)

-    platform_tag_map = {
-        "manylinux1": ["manylinux_2_5", "manylinux1"],
-        "manylinux2010": ["manylinux_2_12", "manylinux2010"],
-        "manylinux2014": ["manylinux_2_17", "manylinux2014"],
-    }
-    expected_wheels = utils.expected_wheels(
-        "spam",
-        "0.1.0",
-        manylinux_versions=platform_tag_map.get(manylinux_image, [manylinux_image]),
-        musllinux_versions=[],
-    )
-    if manylinux_image in {"manylinux1"}:
-        # remove PyPy & CPython 3.10 and above
-        expected_wheels = [w for w in expected_wheels if "-pp" not in w and "-cp31" 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)
@@ -1,3 +1,4 @@
+import os
 import textwrap

 from . import test_projects, utils
@@ -7,7 +8,10 @@ basic_project = test_projects.new_c_project(
        """
        # Will fail if PEP 518 does work
        import requests
-        assert requests.__version__ == "2.23.0", "Requests found but wrong version ({0})".format(requests.__version__)
+        if sys.version_info < (3, 6, 0):
+            assert requests.__version__ == "2.22.0", "Requests found but wrong version ({0})".format(requests.__version__)
+        else:
+            assert requests.__version__ == "2.23.0", "Requests found but wrong version ({0})".format(requests.__version__)

        # Just making sure environment is still set
        import os
@@ -25,20 +29,21 @@ requires = [
    "setuptools >= 42",
    "setuptools_scm[toml]>=4.1.2",
    "wheel",
-    "requests==2.23.0"
+    "requests==2.22.0; python_version<'3.6'",
+    "requests==2.23.0; python_version>='3.6'"
 ]

 build-backend = "setuptools.build_meta"
 """


-def test_pep518(tmp_path, build_frontend_env):
+def test_pep518(tmp_path):

    project_dir = tmp_path / "project"
    basic_project.generate(project_dir)

    # build the wheels
-    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=build_frontend_env)
+    actual_wheels = utils.cibuildwheel_run(project_dir)

    # check that the expected wheels are produced
    expected_wheels = utils.expected_wheels("spam", "0.1.0")
@@ -49,12 +54,4 @@ def test_pep518(tmp_path, build_frontend_env):
    assert not (project_dir / "42").exists()
    assert not (project_dir / "4.1.2").exists()

-    # pypa/build creates a "build" folder & a "*.egg-info" folder for the wheel being built,
-    # this should be harmless so remove them
-    contents = [
-        item
-        for item in project_dir.iterdir()
-        if item.name != "build" and not item.name.endswith(".egg-info")
-    ]
-
-    assert len(contents) == len(basic_project.files)
+    assert len(os.listdir(project_dir)) == len(basic_project.files)
@@ -1,4 +1,2 @@
-from .base import TestProject
-from .c import new_c_project
-
-__all__ = ("TestProject", "new_c_project")
+from .base import TestProject  # noqa
+from .c import new_c_project  # noqa
@@ -24,18 +24,38 @@ spam_system(PyObject *self, PyObject *args)
 }

 /* Module initialization */
+
+#if PY_MAJOR_VERSION >= 3
+    #define MOD_INIT(name) PyMODINIT_FUNC PyInit_##name(void)
+    #define MOD_DEF(m, name, doc, methods, module_state_size) \
+        static struct PyModuleDef moduledef = { \
+            PyModuleDef_HEAD_INIT, name, doc, module_state_size, methods, }; \
+        m = PyModule_Create(&moduledef);
+    #define MOD_RETURN(m) return m;
+#else
+    #define MOD_INIT(name) PyMODINIT_FUNC init##name(void)
+    #define MOD_DEF(m, name, doc, methods, module_state_size) \
+        m = Py_InitModule3(name, methods, doc);
+    #define MOD_RETURN(m) return;
+#endif
+
 static PyMethodDef module_methods[] = {
    {"system", (PyCFunction)spam_system, METH_VARARGS,
     "Execute a shell command."},
    {NULL}  /* Sentinel */
 };

-PyMODINIT_FUNC PyInit_spam(void)
+MOD_INIT(spam)
 {
-    static struct PyModuleDef moduledef = {
-        PyModuleDef_HEAD_INIT, "spam", "Example module", -1, module_methods,
-    };
-    return PyModule_Create(&moduledef);
+    PyObject* m;
+
+    MOD_DEF(m,
+            "spam",
+            "Example module",
+            module_methods,
+            -1)
+
+    MOD_RETURN(m)
 }
 """

@@ -7,12 +7,15 @@ project_with_ssl_tests = test_projects.new_c_project(
        r"""
        import ssl

-        from urllib.request import urlopen
+        if sys.version_info[0] == 2:
+            from urllib2 import urlopen
+        else:
+            from urllib.request import urlopen

        context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
        data = urlopen("https://www.nist.gov", context=context)
-        data = urlopen("https://raw.githubusercontent.com/pypa/cibuildwheel/main/CI.md", context=context)
-        data = urlopen("https://raw.githubusercontent.com/pypa/cibuildwheel/main/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")
        """
    )
 )
@@ -10,7 +10,7 @@ project_with_a_test = test_projects.new_c_project(
    setup_cfg_add=textwrap.dedent(
        r"""
        [options.extras_require]
-        test = pytest
+        test = nose
        """
    )
 )
@@ -52,7 +52,8 @@ class TestSpam(TestCase):
        # sys.prefix is different from sys.base_prefix when running a virtualenv
        # See https://docs.python.org/3/library/venv.html, which virtualenv seems
        # to honor in recent releases
-        if sys.prefix == sys.base_prefix:
+        # Python 2 doesn't have sys.base_prefix by default
+        if not hasattr(sys, 'base_prefix') or sys.prefix == sys.base_prefix:
            self.fail("Not running in a virtualenv")

        self.assertTrue(path_contains(sys.prefix, sys.executable))
@@ -66,6 +67,10 @@ class TestSpam(TestCase):
        bits = struct.calcsize("P") * 8
        if bits == 32:
            self.assertEqual(platform.machine(), "i686")
+
+    def test_time_to_remove_the_pypy_venv_patch(self):
+        if sys.platform == "darwin":
+            assert not hasattr(sys, "pypy_version_info") or sys.pypy_version_info < (7,3,4)
 '''


@@ -77,11 +82,11 @@ def test(tmp_path):
    actual_wheels = utils.cibuildwheel_run(
        project_dir,
        add_env={
-            "CIBW_TEST_REQUIRES": "pytest",
+            "CIBW_TEST_REQUIRES": "nose",
            # the 'false ||' bit is to ensure this command runs in a shell on
            # mac/linux.
-            "CIBW_TEST_COMMAND": "false || pytest {project}/test",
-            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || pytest {project}/test",
+            "CIBW_TEST_COMMAND": "false || nosetests {project}/test",
+            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || nosetests {project}/test",
        },
    )

@@ -101,8 +106,8 @@ def test_extras_require(tmp_path):
            "CIBW_TEST_EXTRAS": "test",
            # the 'false ||' bit is to ensure this command runs in a shell on
            # mac/linux.
-            "CIBW_TEST_COMMAND": "false || pytest {project}/test",
-            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || pytest {project}/test",
+            "CIBW_TEST_COMMAND": "false || nosetests {project}/test",
+            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || nosetests {project}/test",
        },
    )

@@ -3,58 +3,30 @@ import subprocess
 import pytest

 from . import utils
-from .test_projects import TestProject, new_c_project
+from .test_projects import TestProject

-SO_FILE_WARNING = "NOTE: Shared object (.so) files found in this project."
+so_file_project = TestProject()
+
+so_file_project.files["libnothing.so"] = ""
+
+so_file_project.files[
+    "setup.py"
+] = """
+raise Exception('this build will fail')
+"""


-@pytest.mark.parametrize("project_contains_so_files", [False, True])
-def test_failed_build_with_so_files(tmp_path, capfd, build_frontend_env, project_contains_so_files):
-    project = TestProject()
-    project.files["setup.py"] = "raise Exception('this build will fail')\n"
-    if project_contains_so_files:
-        project.files["libnothing.so"] = ""
-
+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")

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

    with pytest.raises(subprocess.CalledProcessError):
-        utils.cibuildwheel_run(project_dir, add_env=build_frontend_env)
+        utils.cibuildwheel_run(project_dir)

    captured = capfd.readouterr()
    print("out", captured.out)
    print("err", captured.err)
-
-    if project_contains_so_files:
-        assert SO_FILE_WARNING in captured.err
-    else:
-        assert SO_FILE_WARNING not in captured.err
-
-
-@pytest.mark.parametrize("project_contains_so_files", [False, True])
-def test_failed_repair_with_so_files(tmp_path, capfd, project_contains_so_files):
-    if utils.platform != "linux":
-        pytest.skip("this test is only relevant to the linux build")
-
-    project = new_c_project()
-
-    if project_contains_so_files:
-        project.files["libnothing.so"] = ""
-
-    project_dir = tmp_path / "project"
-    project.generate(project_dir)
-
-    with pytest.raises(subprocess.CalledProcessError):
-        utils.cibuildwheel_run(project_dir, add_env={"CIBW_REPAIR_WHEEL_COMMAND": "false"})
-
-    captured = capfd.readouterr()
-    print("out", captured.out)
-    print("err", captured.err)
-
-    if project_contains_so_files:
-        assert SO_FILE_WARNING in captured.err
-    else:
-        assert SO_FILE_WARNING not in captured.err
+    assert "NOTE: Shared object (.so) files found in this project." in captured.err
@@ -0,0 +1,32 @@
+import textwrap
+
+import pytest
+
+from . import test_projects, utils
+
+project_with_unicode = test_projects.new_c_project(
+    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")
+
+    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"'}
+    )
+
+    # check that the expected wheels are produced
+    expected_wheels = utils.expected_wheels("spam", "0.1.0")
+    assert set(actual_wheels) == set(expected_wheels)
@@ -1,34 +0,0 @@
-import pytest
-
-from . import test_projects, utils
-
-basic_project = test_projects.new_c_project()
-
-
-def test_wheel_tag_is_correct_when_using_macosx_deployment_target(tmp_path):
-    if utils.platform != "macos":
-        pytest.skip("This test is only relevant to MACOSX_DEPLOYMENT_TARGET")
-
-    project_dir = tmp_path / "project"
-    basic_project.generate(project_dir)
-
-    # build the wheels
-    deployment_target = "10.11"
-    actual_wheels = utils.cibuildwheel_run(
-        project_dir,
-        add_env={
-            "CIBW_BUILD": "cp39-*",
-            "MACOSX_DEPLOYMENT_TARGET": deployment_target,
-        },
-    )
-
-    # check that the expected wheels are produced
-    expected_wheels = utils.expected_wheels(
-        "spam", "0.1.0", macosx_deployment_target=deployment_target
-    )
-    expected_wheels = [w for w in expected_wheels if "cp39" in w]
-
-    print("actual_wheels", actual_wheels)
-    print("expected_wheels", expected_wheels)
-
-    assert set(actual_wheels) == set(expected_wheels)
@@ -6,9 +6,11 @@ This file is added to the PYTHONPATH in the test runner at bin/run_test.py.

 import os
 import platform as pm
+import shutil
 import subprocess
 import sys
-from tempfile import TemporaryDirectory
+from contextlib import contextmanager
+from tempfile import mkdtemp

 platform: str

@@ -24,17 +26,24 @@ else:
    raise Exception("Unsupported platform")


-def cibuildwheel_get_build_identifiers(project_path, env=None, *, prerelease_pythons=False):
+# Python 2 does not have a tempfile.TemporaryDirectory context manager
+@contextmanager
+def TemporaryDirectoryIfNone(path):
+    _path = path or mkdtemp()
+    try:
+        yield _path
+    finally:
+        if path is None:
+            shutil.rmtree(_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 = [sys.executable, "-m", "cibuildwheel", "--print-build-identifiers", str(project_path)]
-    if prerelease_pythons:
-        cmd.append("--prerelease-pythons")
-
    cmd_output = subprocess.run(
-        cmd,
+        [sys.executable, "-m", "cibuildwheel", "--print-build-identifiers", str(project_path)],
        universal_newlines=True,
        env=env,
        check=True,
@@ -67,22 +76,21 @@ def cibuildwheel_run(project_path, package_dir=".", env=None, add_env=None, outp
    if add_env is not None:
        env.update(add_env)

-    with TemporaryDirectory() as tmp_output_dir:
+    with TemporaryDirectoryIfNone(output_dir) as _output_dir:
        subprocess.run(
            [
                sys.executable,
                "-m",
                "cibuildwheel",
-                "--prerelease-pythons",
                "--output-dir",
-                str(output_dir or tmp_output_dir),
+                str(_output_dir),
                str(package_dir),
            ],
            env=env,
            cwd=project_path,
            check=True,
        )
-        wheels = os.listdir(output_dir or tmp_output_dir)
+        wheels = os.listdir(_output_dir)
    return wheels


@@ -103,9 +111,10 @@ def expected_wheels(
    package_name,
    package_version,
    manylinux_versions=None,
-    musllinux_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.
@@ -120,21 +129,28 @@ def expected_wheels(

    if manylinux_versions is None:
        if machine_arch == "x86_64":
-            manylinux_versions = ["manylinux_2_5", "manylinux1", "manylinux_2_12", "manylinux2010"]
+            manylinux_versions = ["manylinux1", "manylinux2010"]
        else:
-            manylinux_versions = ["manylinux_2_17", "manylinux2014"]
+            manylinux_versions = ["manylinux2014"]

-    if musllinux_versions is None:
-        musllinux_versions = ["musllinux_1_1"]
+    python_abi_tags = ["cp35-cp35m", "cp36-cp36m", "cp37-cp37m", "cp38-cp38", "cp39-cp39"]

-    python_abi_tags = ["cp36-cp36m", "cp37-cp37m", "cp38-cp38", "cp39-cp39", "cp310-cp310"]
+    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", "aarch64"]:
-        python_abi_tags += ["pp37-pypy37_pp73"]
+        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):
+        # 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")
+        # pypy not supported on macOS 11.
+        python_abi_tags = [t for t in python_abi_tags if not t.startswith("pp")]

    if platform == "macos" and machine_arch == "arm64":
-        # currently, arm64 macs are only supported by cp39 & cp310
-        python_abi_tags = ["cp39-cp39", "cp310-cp310"]
+        # currently, arm64 macs are only supported by cp39
+        python_abi_tags = ["cp39-cp39"]

    wheels = []

@@ -144,32 +160,20 @@ def expected_wheels(
        if platform == "linux":
            architectures = [machine_arch]

-            if machine_arch == "x86_64":
+            if machine_arch == "x86_64" and python_abi_tag.startswith("cp"):
                architectures.append("i686")

            platform_tags = [
-                ".".join(
-                    f"{manylinux_version}_{architecture}"
-                    for manylinux_version in manylinux_versions
-                )
+                f"{manylinux_version}_{architecture}"
                for architecture in architectures
+                for manylinux_version in manylinux_versions
            ]
-            if len(musllinux_versions) > 0 and not python_abi_tag.startswith("pp"):
-                platform_tags.extend(
-                    [
-                        ".".join(
-                            f"{musllinux_version}_{architecture}"
-                            for musllinux_version in musllinux_versions
-                        )
-                        for architecture in architectures
-                    ]
-                )

        elif platform == "windows":
            if python_abi_tag.startswith("cp"):
                platform_tags = ["win32", "win_amd64"]
            else:
-                platform_tags = ["win_amd64"]
+                platform_tags = ["win32"]

        elif platform == "macos":
            if python_abi_tag == "cp39-cp39" and machine_arch == "arm64":
@@ -191,6 +195,11 @@ def expected_wheels(
        for platform_tag in platform_tags:
            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]
+
    return wheels


@@ -1,32 +1,28 @@
-from typing import Dict, List
-
-import tomli
+import toml
 from packaging.version import Version

-from cibuildwheel.extra import Printable, dump_python_configurations
+from cibuildwheel.extra import InlineArrayDictEncoder  # noqa: E402
 from cibuildwheel.util import resources_dir


 def test_compare_configs():
-    with open(resources_dir / "build-platforms.toml") as f1:
-        txt = f1.read()
+    with open(resources_dir / "build-platforms.toml") as f:
+        txt = f.read()

-    with open(resources_dir / "build-platforms.toml", "rb") as f2:
-        dict_txt = tomli.load(f2)
+    dict_txt = toml.loads(txt)

-    new_txt = dump_python_configurations(dict_txt)
+    new_txt = toml.dumps(dict_txt, encoder=InlineArrayDictEncoder())
    print(new_txt)

    assert new_txt == txt


 def test_dump_with_Version():
-    # MyPy doesn't understand deeply nested dicts correctly
-    example: Dict[str, Dict[str, List[Dict[str, Printable]]]] = {
+    example = {
        "windows": {
            "python_configurations": [
                {"identifier": "cp27-win32", "version": Version("2.7.18"), "arch": "32"},
-                {"identifier": "cp27-win_amd64", "version": "2.7.18", "arch": "64"},
+                {"identifier": "cp27-win_amd64", "version": Version("2.7.18"), "arch": "64"},
            ]
        }
    }
@@ -39,6 +35,6 @@ python_configurations = [
 ]
 """

-    output = dump_python_configurations(example)
+    output = toml.dumps(example, encoder=InlineArrayDictEncoder())
    print(output)
    assert output == result
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
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