The bug is still going on in stable/yoga with custom plugins:

INFO:kolla.common.utils.neutron-server:  error: subprocess-exited-with-error
INFO:kolla.common.utils.neutron-server:  
INFO:kolla.common.utils.neutron-server:  × python setup.py egg_info did not run successfully.
INFO:kolla.common.utils.neutron-server:  │ exit code: 1
INFO:kolla.common.utils.neutron-server:  ╰─> [22 lines of output]
INFO:kolla.common.utils.neutron-server:      /var/lib/kolla/venv/lib/python3.8/site-packages/setuptools/dist.py:738: UserWarning: Usage of dash-separated 'description-file' will not be supported in future versions. Please use the underscore name 'description_file' instead
INFO:kolla.common.utils.neutron-server:        warnings.warn(
INFO:kolla.common.utils.neutron-server:      /var/lib/kolla/venv/lib/python3.8/site-packages/setuptools/dist.py:738: UserWarning: Usage of dash-separated 'author-email' will not be supported in future versions. Please use the underscore name 'author_email' instead
INFO:kolla.common.utils.neutron-server:        warnings.warn(
INFO:kolla.common.utils.neutron-server:      /var/lib/kolla/venv/lib/python3.8/site-packages/setuptools/dist.py:738: UserWarning: Usage of dash-separated 'home-page' will not be supported in future versions. Please use the underscore name 'home_page' instead
INFO:kolla.common.utils.neutron-server:        warnings.warn(
INFO:kolla.common.utils.neutron-server:      Error parsing
INFO:kolla.common.utils.neutron-server:      Traceback (most recent call last):
INFO:kolla.common.utils.neutron-server:        File "/var/lib/kolla/venv/lib/python3.8/site-packages/pbr/core.py", line 111, in pbr
INFO:kolla.common.utils.neutron-server:          attrs = util.cfg_to_args(path, dist.script_args)
INFO:kolla.common.utils.neutron-server:        File "/var/lib/kolla/venv/lib/python3.8/site-packages/pbr/util.py", line 272, in cfg_to_args
INFO:kolla.common.utils.neutron-server:          pbr.hooks.setup_hook(config)
INFO:kolla.common.utils.neutron-server:        File "/var/lib/kolla/venv/lib/python3.8/site-packages/pbr/hooks/__init__.py", line 25, in setup_hook
INFO:kolla.common.utils.neutron-server:          metadata_config.run()
INFO:kolla.common.utils.neutron-server:        File "/var/lib/kolla/venv/lib/python3.8/site-packages/pbr/hooks/base.py", line 27, in run
INFO:kolla.common.utils.neutron-server:          self.hook()
INFO:kolla.common.utils.neutron-server:        File "/var/lib/kolla/venv/lib/python3.8/site-packages/pbr/hooks/metadata.py", line 25, in hook
INFO:kolla.common.utils.neutron-server:          self.config['version'] = packaging.get_version(
INFO:kolla.common.utils.neutron-server:        File "/var/lib/kolla/venv/lib/python3.8/site-packages/pbr/packaging.py", line 872, in get_version
INFO:kolla.common.utils.neutron-server:          raise Exception("Versioning for this project requires either an sdist"
INFO:kolla.common.utils.neutron-server:      Exception: Versioning for this project requires either an sdist tarball, or access to an upstream git repository. It's also possible that there is a mismatch between the package name in setup.cfg and the argument given to pbr.version.VersionInfo. Project name audit-middleware was given, but was not able to be found.
INFO:kolla.common.utils.neutron-server:      error in setup command: Error parsing /plugins/neutron-server-plugin-audit-archive-cf/setup.cfg: Exception: Versioning for this project requires either an sdist tarball, or access to an upstream git repository. It's also possible that there is a mismatch between the package name in setup.cfg and the argument given to pbr.version.VersionInfo. Project name audit-middleware was given, but was not able to be found.
INFO:kolla.common.utils.neutron-server:      [end of output]
INFO:kolla.common.utils.neutron-server:  
INFO:kolla.common.utils.neutron-server:  note: This error originates from a subprocess, and is likely not a problem with pip.
INFO:kolla.common.utils.neutron-server:
INFO:kolla.common.utils.neutron-server:error: metadata-generation-failed
INFO:kolla.common.utils.neutron-server:× Encountered error while generating package metadata.
INFO:kolla.common.utils.neutron-server:╰─> See above for output.
INFO:kolla.common.utils.neutron-server:note: This is an issue with the package mentioned above, not pip.
INFO:kolla.common.utils.neutron-server:hint: See above for details.
INFO:kolla.common.utils.neutron-server: