What were you trying to do that didn't work?

I would like to backport https://src.fedoraproject.org/rpms/python-rpm-generators/pull-request/57 that implements the Prevent-Providing-python3dist(pkg)=0 to python-rpm-generators in EL 9. I propose disabling this by default in EL 9 to preserve backwards compatibility while allowing packagers to set `%_python_dist_allow_version_zero` to `0` in their buildsystem configuration (or individual specfiles) to enable this extra check. I can provide a patch.

Please provide the package NVR for which bug is seen:

python3-rpm-generators-12-9.el9.noarch

Steps to reproduce

1. Try to build a broken package with `rpmbuild` that includes Version: 0 in its dist-info metadata.

Expected results

When `%_python_dist_allow_version_zero` is enabled, the pythondist generator should fail the build with an informative message.

Actual results

The package build succeeds, resulting in a broken package.