Hello, tox was updated in Feodra 33+ to 3.19. I've managed to get a backwards incompatible change of behavior into that release. Previously, when there was no tox.ini, but there was setup.cfg, tox proceeded without checking the content of setup.cfg. This lead to a dangerous behvior: `tox` (and `%tox`) would exit with 0 if there were no tox-configured tests. This is now changed: If setup.cfg is present, but contains no tox-related configuration, tox will fail: ERROR: tox config file (either pyproject.toml, tox.ini, setup.cfg) not found This manifests like this with `%pyproject_buildrequires -t`: ... Handling tox-current-env >= 0.0.2 from tox itself Requirement satisfied: tox-current-env >= 0.0.2 (installed: tox-current-env 0.0.2) ERROR: tox config file (either pyproject.toml, tox.ini, setup.cfg) not found Traceback (most recent call last): File "/usr/lib/rpm/redhat/pyproject_buildrequires.py", line 322, in main generate_requires( File "/usr/lib/rpm/redhat/pyproject_buildrequires.py", line 269, in generate_requires generate_tox_requirements(toxenv, requirements) File "/usr/lib/rpm/redhat/pyproject_buildrequires.py", line 231, in generate_tox_requirements r.check_returncode() File "/usr/lib64/python3.9/subprocess.py", line 456, in check_returncode raise CalledProcessError(self.returncode, self.args, self.stdout, subprocess.CalledProcessError: Command '['/usr/bin/python3', '-m', 'tox', '--print-deps-to-file', '/tmp/tmpgvu_6190', '-qre', 'py39']' returned non-zero exit status 1. error: Bad exit status from /var/tmp/rpm-tmp.n92yaC (%generate_buildrequires) The mitigation is to not use tox if upstream doesn't have tox configuration. This change broke python-latexcodec and python-pybtex-docutils: https://koschei.fedoraproject.org/build/8698931 https://koschei.fedoraproject.org/build/8698932 I'll fix them. -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok