[BUG] `license-files` should be allowed in `[project]`?!

[calestyo]

setuptools version

75.6.0

Python version

3.13

OS

Debian

Additional environment information

No response

Description

Hey.

Not sure whether you guys already work on this (cause I saw #4706, which seems however to be rather about License-Expression), but AFAIU https://packaging.python.org/en/latest/specifications/pyproject-toml/#license-files, the license-files key should now be allowed in [project], but setuptools errors out on such pyproject.toml:

…
ValueError: invalid pyproject.toml config: `project`.
configuration error: `project` must not contain {'license-files'} properties

Also, the same key should then probably be removed from the Setuptools-specific configuration?!

Cheers,
Chris.

Expected behavior

see above

How to Reproduce

see above

Output

... how I hat such enforced templates ^^

[cdce8p]

I think this can be closed as duplicate. PEP 639 isn't supported yet, it's tracked in #4629. There is an open PR to add support for it (#4706), it might just take a little while longer.

[calestyo]

Fine for me :-)