pip accepts non-PEP440 version `0.1_1` in wheel file name

[notatallshaw]

Description

I wanted to replace pip's custom wheel filename regex with the standard parse_wheel_filename.

However I found that the old regex accepts non-PEP440 syntax and it is even tested for.

The version 0.1_1 gets coerced by pip to 0.1-1, whose canonical form is 0.1.post1.

Expected behavior

Pip shouldn't implement its own wheel filename parsing.

Assuming that is accepted, does this need to go through a depreciation cycle?

pip version

24.2

Python version

3.12

OS

Linux

How to Reproduce

1. Install a wheel named simple-0.1_1-py2-none-any.whl

Output

No response

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[pradyunsg]

This sounds like a good change to me.

Assuming that is accepted, does this need to go through a depreciation cycle?

Yes, probably the standard 6 month one.