Windows Server 2019 has been retired. The Windows Server 2019 image has been removed as of 2025-06-30. For more details, see https://github.com/actions/runner-images/issues/12045

cibuildwheel: While cibuildwheel can build CPython 3.8 universal2/arm64 wheels, we cannot test the arm64 part of them, even when running on an Apple Silicon machine. This is because we use the x86_64 installer of CPython 3.8. See the discussion in https://github.com/pypa/cibuildwheel/pull/1169 for the details. To silence this warning, set `CIBW_TEST_SKIP: "cp38-macosx_*:arm64"`.

cibuildwheel: While cibuildwheel can build CPython 3.8 universal2/arm64 wheels, we cannot test the arm64 part of them, even when running on an Apple Silicon machine. This is because we use the x86_64 installer of CPython 3.8. See the discussion in https://github.com/pypa/cibuildwheel/pull/1169 for the details. To silence this warning, set `CIBW_TEST_SKIP: "cp38-macosx_*:arm64"`.

cibuildwheel: Invalid skip selector: 'pp38-*'. This selector matches a group that wasn't enabled. Enable it using the `enable` option or remove this selector. This selector will have no effect.

cibuildwheel: Invalid skip selector: 'pp38-*'. This selector matches a group that wasn't enabled. Enable it using the `enable` option or remove this selector. This selector will have no effect.

cibuildwheel: Invalid skip selector: 'pp38-*'. This selector matches a group that wasn't enabled. Enable it using the `enable` option or remove this selector. This selector will have no effect.

The windows-2019 runner image is being deprecated, consider switching to windows-2022(windows-latest) or windows-2025 instead. For more details see https://github.com/actions/runner-images/issues/12045.

cibuildwheel: Setting SYSTEM_VERSION_COMPAT=0 to ensure CPython 3.8 can get correct macOS version and allow installation of wheels with MACOSX_DEPLOYMENT_TARGET >= 11.0. See https://github.com/pypa/cibuildwheel/issues/1767 for the details.