setuptools warnings

[mgorny]

Describe the bug

When building the wheel for 3.11.15, setuptools yields the following warnings:

/usr/lib/pypy3.10/site-packages/setuptools/dist.py:759: SetuptoolsDeprecationWarning: License classifiers are deprecated.
!!

        ********************************************************************************
        Please consider removing the following classifiers in favor of a SPDX license expression:

        License :: OSI Approved :: Apache Software License

        See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
        ********************************************************************************

!!
  self._finalize_license_expression()

To Reproduce

python -m build -w

Expected behavior

No warnings.

Logs/tracebacks

See above.

Python Version

$ python --version
Python 3.10.16 (64367dfeb263, Feb 26 2025, 13:35:40)
[PyPy 7.3.19 with GCC 14.2.1 20241221]

aiohttp Version

$ python -m pip show aiohttp
Name: aiohttp
Version: 3.11.15
Summary: Async http client/server framework (asyncio)
Home-page: https://github.com/aio-libs/aiohttp
Author: 
Author-email: 
License: Apache-2.0
Location: /usr/lib/pypy3.10/site-packages
Requires: aiohappyeyeballs, aiosignal, async-timeout, attrs, frozenlist, multidict, propcache, yarl
Required-by: aiohttp-cors, aiohttp_socks, pytest-aiohttp

multidict Version

$ python -m pip show multidict
Name: multidict
Version: 6.2.0
Summary: multidict implementation
Home-page: https://github.com/aio-libs/multidict
Author: Andrew Svetlov
Author-email: andrew.svetlov@gmail.com
License: Apache 2
Location: /usr/lib/pypy3.10/site-packages
Requires: typing-extensions
Required-by: aiohttp, yarl

propcache Version

$ python -m pip show propcache
Name: propcache
Version: 0.3.1
Summary: Accelerated property cache
Home-page: https://github.com/aio-libs/propcache
Author: Andrew Svetlov
Author-email: andrew.svetlov@gmail.com
License: Apache-2.0
Location: /usr/lib/pypy3.10/site-packages
Requires: 
Required-by: aiohttp, yarl

yarl Version

$ python -m pip show yarl
Name: yarl
Version: 1.18.3
Summary: Yet another URL library
Home-page: https://github.com/aio-libs/yarl
Author: Andrew Svetlov
Author-email: andrew.svetlov@gmail.com
License: Apache-2.0
Location: /usr/lib/pypy3.10/site-packages
Requires: idna, multidict, propcache
Required-by: aiohttp

OS

Gentoo Linux amd64

Related component

Server, Client

Additional context

No response

Code of Conduct

• I agree to follow the aio-libs Code of Conduct

[webknjaz]

It's probably a PEP 639 thing. Thanks for reporting!

[bdraco]

fixed via #10881