Failing to build pyp2spec through pyp2spec

[FrostyX]

Sorry for the inception inspired title. The point is, I am not sure if this is a bug in the pyp2spec tool or if the pyp2spec tool is incorrectly packaged. Either way, this is what I get:

$ pyp2spec pyp2spec
$ rpmbuild -bs python-pyp2spec.spec
$ mock ~/rpmbuild/SRPMS/python-pyp2spec-0.13.0-1.fc42.src.rpm
...
  File "/usr/lib/python3.13/site-packages/setuptools/config/pyprojecttoml.py", line 57, in validate
    raise ValueError(f"{error}\n{summary}") from None
ValueError: invalid pyproject.toml config: `project.license`.
configuration error: `project.license` must be valid exactly by one definition (2 matches found):

    - keys:
        'file': {type: string}
      required: ['file']
    - keys:
        'text': {type: string}
      required: ['text']

error: Bad exit status from /var/tmp/rpm-tmp.qmiuyW (%generate_buildrequires)
    Bad exit status from /var/tmp/rpm-tmp.qmiuyW (%generate_buildrequires)

I discovered this when running tests before doing a new Copr release.

[hroncok]

This is too old setuptools in the buildroot.
Perhaps pyp2spec shpuld declare a dependency on setuptools>=xxx to make it clear.

[befeleme]

Yes, I didn't realize the porting to PEP 639 will immediately make an issue between Fedora releases. This works in Fedora 43 and 44, and not in the older Fedoras. In Fedora, I temporarily patch the specfile to contain the old metadata format:

sed -i "s/license = \"MIT AND MIT-0\"/license.text = \"MIT AND MIT-0\"/" pyproject.toml
sed -i "/license-files/d" pyproject.toml