From c50d72c03c024d129f5e8d74ee24e24759a98df3 Mon Sep 17 00:00:00 2001
From: Jakub Kuczys <6032823+jack1142@users.noreply.github.com>
Date: Wed, 17 Aug 2022 15:56:57 +0200
Subject: [PATCH] Show how to build for Intel macOS on Cirrus CI

---
 README.md                        |  3 ++-
 docs/faq.md                      |  8 ++++++++
 examples/cirrus-ci-intel-mac.yml | 21 +++++++++++++++++++++
 3 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 examples/cirrus-ci-intel-mac.yml

diff --git a/README.md b/README.md
index 184c3ea7..af5dbf5f 100644
--- a/README.md
+++ b/README.md
@@ -59,10 +59,11 @@ Usage
 | AppVeyor        | ✅    | ✅    | ✅      |           | ✅²       |
 | CircleCI        | ✅    | ✅    |         |           | ✅²       |
 | Gitlab CI       | ✅    |       |         |           | ✅²       |
-| Cirrus CI       | ✅    |       | ✅      | ✅        | ✅        |
+| Cirrus CI       | ✅    | ✅³   | ✅      | ✅        | ✅        |
 
 <sup>¹ [Requires emulation](https://cibuildwheel.readthedocs.io/en/stable/faq/#emulation), distributed separately. Other services may also support Linux ARM through emulation or third-party build hosts, but these are not tested in our CI.</sup><br>
 <sup>² [Uses cross-compilation](https://cibuildwheel.readthedocs.io/en/stable/faq/#universal2). It is not possible to test `arm64` and the `arm64` part of a `universal2` wheel on this CI platform.</sup><br>
+<sup>³ [Uses cross-compilation](https://cibuildwheel.readthedocs.io/en/stable/faq/#universal2). Thanks to Rosetta 2 emulation, it is possible to test `x86_64` and both parts of a `universal2` wheel on this CI platform.</sup><br>
 
 <!--intro-end-->
 
diff --git a/docs/faq.md b/docs/faq.md
index 85314cd3..555e296c 100644
--- a/docs/faq.md
+++ b/docs/faq.md
@@ -81,6 +81,14 @@ Here's an example GitHub Actions workflow with a job that builds for Apple Silic
 {% include "../examples/github-apple-silicon.yml" %}
 ```
 
+Here's an example Cirrus CI workflow with a job that builds for macOS Intel through Rosetta 2 emulation and for Apple Silicon natively:
+
+> .cirrus.yml
+
+```yml
+{% include "../examples/cirrus-ci-intel-mac.yml" %}
+```
+
 ### Building non-native architectures using emulation  {: #emulation}
 
 cibuildwheel supports building non-native architectures on Linux, via
diff --git a/examples/cirrus-ci-intel-mac.yml b/examples/cirrus-ci-intel-mac.yml
new file mode 100644
index 00000000..9c369869
--- /dev/null
+++ b/examples/cirrus-ci-intel-mac.yml
@@ -0,0 +1,21 @@
+build_and_store_wheels: &BUILD_AND_STORE_WHEELS
+  install_cibuildwheel_script:
+    - python -m pip install cibuildwheel==2.9.0
+  run_cibuildwheel_script:
+    - cibuildwheel
+  wheels_artifacts:
+    path: "wheelhouse/*"
+
+
+macos_task:
+  name: Build macOS x86_64 and arm64 wheels.
+  macos_instance:
+    image: ghcr.io/cirruslabs/macos-monterey-xcode
+
+  env:
+    PATH: /opt/homebrew/opt/python@3.10/bin:$PATH
+    CIBW_ARCHS_MACOS: x86_64 arm64
+  install_pre_requirements_script:
+    - brew install python@3.10
+    - ln -s python3 /opt/homebrew/opt/python@3.10/bin/python
+  <<: *BUILD_AND_STORE_WHEELS