Don't use default macos/arm64 deployment target in calculating the platform tag for fat binaries #390
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…atform tag for fat binaries The system compiler in Xcode 12 will not set the deployment target for arm64 below 11.0.0 (which is the first version of macOS supporting arm64). To allow building wheels that target an earlier version of macOS (by way of the x86_64 part of fat binaries) ignore the deployment target in the arm64 part of fat binaries when that's 11.0.0.
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With this PR it is possible to create wheels targeting the "universal2" installer on Python.org (introduced for Python 3.9.1, and likely the only installer variant for 3.10). The PR should not allow creating wheels that won't work on the macOS version specified in the platform tag: The version in the tag can be lower than 11.0.0, but only when the arm64 part of the binary works on macOS 11.0.0 which is the lowest version of macOS that supports arm64. |
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Thanks! |
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Thanks for the quick response. Can you give an indication when this will end up in a release? |
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I expect to make a new release today or tomorrow. |
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The system compiler in Xcode 12 will not set the deployment target for arm64 below 11.0.0
(which is the first version of macOS supporting arm64). To allow building wheels that target
an earlier version of macOS (by way of the x86_64 part of fat binaries) ignore the deployment
target in the arm64 part of fat binaries when that's 11.0.0.
This fixes #387