Patch vendored packaging library to support --disable-gil (PEP 703) builds
#12634
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type: feature request
Request for a new feature
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colesbury
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S: needs triage
colesbury
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Apr 17, 2024
This applies pypa/packaging#728 as a stopgap measure to support the free-threaded builds of CPython. That PR is already merged upstream, but a full upgrade of the packaging library is more complicated due to removal of legacy versions and version specifiers. Closes pypa#12634
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What's the problem this feature will solve?
The current version of pip does not support the free-threaded builds of CPython 3.13 due to using an older version of the
packaginglibrary. Currently, pip 24.0 will install incompatible stable ABI wheels and also refuse to install compatible wheels in the free-threaded build.#12300 upgrades the vendored packaging library, but the PR still has unresolved issues that are unrelated to support for the free-threaded CPython build.
Describe the solution you'd like
As a stopgap measure, let's patch the vendored packaging library with the changes from pypa/packaging#728 in order to support the free-threaded build.
This decouples support for free-threaded CPython and removal of legacy version specifiers. Supporting free-threaded CPython is fairly straightforward, while the removal of legacy versions and version specifiers is complex.
Alternative Solutions
Alternatively, we can wait for the remaining issues in #12300 to be addressed.
Additional context
The May 7 beta release of Python 3.13 is coming up soon. If possible, I'd really like to have a version of pip that works with the free-threaded build before then.
Code of Conduct
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