Write WHEEL tags in expanded form

[ichard26]

Hello, pip maintainer here! 👋

The wheel specification requires that the Tag field contains all of the tags in their expanded form. Leaving the compressed form unchanged is usually "fine", but pip check (only!) misidentifies the wheel as incompatible with the system when fed a compressed wheel tag set. See also: pypa/pip#13709

• https://packaging.python.org/en/latest/specifications/platform-compatibility-tags/#compressed-tag-sets
• point 11 under "file contents" in https://packaging.python.org/en/latest/specifications/binary-distribution-format/#file-contents

While I'm unfamiliar with this repository and can't test the build script directly, the tag expansion logic has been tested below.

>>> def expand(tag):
...     pytag, abitag, platformtag = tag.split("-")
...     return [
...         "-".join((x, y, z))
...         for z in platformtag.split(".")
...         for y in abitag.split(".")
...         for x in pytag.split(".")
...     ]
...     
>>> list(expand("py3-none-manylinux_2_17_aarch64.manylinux2014_aarch64.musllinux_1_1_aarch64"))
['py3-none-manylinux_2_17_aarch64', 'py3-none-manylinux2014_aarch64', 'py3-none-musllinux_1_1_aarch64']

Unfortunately, other projects seem to be copying ziglang's wheel build scripts so this oversight has spread across the ecosystem.

[whitequark]

Hi!

That's really unfortunate; to the extent I am responsible for this mess, I genuinely apologize, as I did my best to follow the relevant standards and avoid causing issues to the ecosystem. The only reason I am generating wheels directly in first place is to ensure that the wheels are reproducible, which as far as I know isn't readily achievable in any other manner.

(For what it's worth, it wasn't clear to me that people would copy the scripts we wrote here, though I could have probably predicted it from past experience.)

You can test the script with just python make_wheel.py. I would have attached a wheel but unfortunately they're too big to attach in a GitHub comment. Let me know if you need me to put a wheel elsewhere.

If you can confirm that the generated wheels are OK to go, what should I do about existing uploads? Unfortunately, I cannot upload new wheels for even the latest release at the moment due to the archive size limits; I have a pending support issue but it's gotten caught a bit in a limbo: pypi/support#8180