python-multiprocess fails to build with Python 3.15.0a6.

+ /usr/bin/python3 /usr/lib/rpm/redhat/pyproject_save_files.py --output-files /builddir/build/BUILD/python-multiprocess-0.70.19-build/python-multiprocess-0.70.19-1.fc45.x86_64-pyproject-files --output-modules /builddir/build/BUILD/python-multiprocess-0.70.19-build/python-multiprocess-0.70.19-1.fc45.x86_64-pyproject-modules --buildroot /builddir/build/BUILD/python-multiprocess-0.70.19-build/BUILDROOT --sitelib /usr/lib/python3.15/site-packages --sitearch /usr/lib64/python3.15/site-packages --python-version 3.15 --pyproject-record /builddir/build/BUILD/python-multiprocess-0.70.19-build/python-multiprocess-0.70.19-1.fc45.x86_64-pyproject-record --prefix /usr -l multiprocess _multiprocess
Traceback (most recent call last):
  File "/usr/lib/rpm/redhat/pyproject_save_files.py", line 907, in <module>
    main(cli_args)
    ~~~~^^^^^^^^^^
  File "/usr/lib/rpm/redhat/pyproject_save_files.py", line 848, in main
    file_section, module_names = pyproject_save_files_and_modules(
                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        cli_args.buildroot,
        ^^^^^^^^^^^^^^^^^^^
    ...<7 lines>...
        cli_args.varargs,
        ^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/rpm/redhat/pyproject_save_files.py", line 829, in pyproject_save_files_and_modules
    generate_file_list(paths_dict, globs, include_auto)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/rpm/redhat/pyproject_save_files.py", line 627, in generate_file_list
    raise ValueError(f"Globs did not match any module: {missed_text}")
ValueError: Globs did not match any module: _multiprocess

This can be a configuration error or a legitimate upstream change that needs reflecting in the specfile.

https://docs.python.org/3.15/whatsnew/3.15.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.15/fedora-rawhide-x86_64/10150480-python-multiprocess/

For all our attempts to build python-multiprocess with Python 3.15, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/package/python-multiprocess/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.15:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/

Let us know here if you have any questions.

Python 3.15 is planned to be included in Fedora 45.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.15.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.