[BUG] 74.0.0 broke x64 to ARM64 cross-compilation for pywin32 #4648
Comments
Avasam
added
bug
Needs Triage
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In distutils repo, this links to this PR commit: pypa/distutils@ |
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Commented: pypa/distutils#285 (comment) |
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The issue has been merged into distutils, but there's a bunch of stuff on main that's backward-incompatible, so I'm going to apply a selective bugfix first before merging the rest of distutils. |
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Oh, geez. I see there's another removal there. I'll want to cherry-pick this change to 74.1.2. |
…piler`. Actually use the `plat_name` param in `MSVCCompiler.initialize`. Selective cherry-pick of pypa/distutils@a0339c1. Closes #4648.
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Releasing as v74.1.3. Thanks! |
setuptools version
setuptools>=74.0.0
Python version
Any (tested 3.10 to 3.13)
OS
Windows 10
Additional environment information
pywin32 is cross-compiling ARM64 builds from x64 machines because GitHub actions environments don't offer Windows-on-ARM machines on the public free tier.
Description
pywin32's ARM64 builds start failing as of setuptools==74.0.0 with the following error:
Here's the full log from a GitHub action: https://github.com/mhammond/pywin32/actions/runs/10853733760/job/30122635996?pr=2370
Expected behavior
A working build as before, or guidance to update the
setup.pyfile.I see a lot of related change in https://setuptools.pypa.io/en/latest/history.html#v74-0-0 but if this is intentional breakage, the migration path is not immediately clear to me.
How to Reproduce
I can try to provide a minimal reproduction if needed, but pywin32's
setup.pyis quite complex, there's still parts I don't fully understand, and it's still using some deprecated distutils API (some of which I'm working on upgrading as per #4070, mhammond/pywin32#2119 and mhammond/pywin32#2208)Note that the following steps should be run on an x86 Windows machine on a version of Python listed here: https://www.nuget.org/packages/pythonarm64#versions-body-tab
MSVC v142 - VS 2019 C++ ARM64 build toolsC++ MFC for latest v142 build tools (ARM64)C++ ATL for latest v142 build tools (ARM64)MSVC v143 - VS 2022 C++ ARM64/ARM64EC build tools (Latest)C++ MFC for latest v143 build tools (ARM64/ARM64EC)C++ ATL for latest v143 build tools (ARM64/ARM64EC)python setup.py -q build_ext --plat-name win-arm64 build --plat-name win-arm64 bdist_wheel --plat-name win-arm64Output
This is my local log using Python3.11 and setuptools==74
This is my local log using Python3.11 and setuptools==73.0.1 (different error, which is expected since I'm missing some externals on my machine)
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