CI: Add cirrus ci config for building apple arm64 wheels

.cirrus.yml

@@ -0,0 +1,24 @@
+macos_arm64_wheel_task:
+#  only_if: $CIRRUS_TAG =~ 'v.*'
+  macos_instance:
+    image: ghcr.io/cirruslabs/macos-monterey-xcode
+  env:
+    CIBW_TEST_COMMAND: pytest --pyargs bottleneck
+    CIBW_TEST_REQUIRES: pytest
+    CIBW_BUILD_VERBOSITY: 1
+    PATH: /opt/homebrew/opt/[email protected]/bin:$PATH
+  matrix:
+    - env:
+        # cibuildwheel can not test on Python 3.8 even on a Apple Silicon machine.
+        # For details see: https://github.com/pypa/cibuildwheel/pull/1169
+        CIBW_BUILD: cp{39,310,311}-macosx_arm64
+
+  prerequisites_script:
+    - brew install [email protected]
+    - python -m pip install cibuildwheel
+
+  cibuildwheel_script:
+    - python -m cibuildwheel ./
+
+  wheels_artifacts:
+    path: "wheelhouse/*"