AttributeError: 'str' object has no attribute 'match' in _parse_version_tag

[jaap3]

Just upgraded to setuptools_scm 8 and am running into the following issue with a setup.py file that has something similar to this (the project also has a pyproject.toml file):

from setuptools import setup

setup(
    setup_requires=["setuptools_scm"],
    ...
    use_scm_version={
       ...
        "tag_regex": r"^(?P<prefix>.+/)?(?P<version>[^\+]+)(?P<suffix>.*)?$",
    },
)

when executing the setup.py file the following error is raised:

Traceback (most recent call last):
  File "setup.py", line 26, in <module>
    setup(
  File "~/venv/lib/python3.8/site-packages/setuptools/__init__.py", line 103, in setup
    return distutils.core.setup(**attrs)
  File "~/venv/lib/python3.8/site-packages/setuptools/_distutils/core.py", line 147, in setup
    _setup_distribution = dist = klass(attrs)
  File "~/venv/lib/python3.8/site-packages/setuptools/dist.py", line 303, in __init__
    _Distribution.__init__(self, dist_attrs)
  File "~/venv/lib/python3.8/site-packages/setuptools/_distutils/dist.py", line 283, in __init__
    self.finalize_options()
  File "~/venv/lib/python3.8/site-packages/setuptools/dist.py", line 680, in finalize_options
    ep(self)
  File "~/venv/lib/python3.8/site-packages/setuptools/dist.py", line 700, in _finalize_setup_keywords
    ep.load()(self, ep.name, value)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/_integration/setuptools.py", line 98, in version_keyword
    _assign_version(dist, config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/_integration/setuptools.py", line 54, in _assign_version
    maybe_version = _get_version(config, force_write_version_files=True)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/_get_version_impl.py", line 89, in _get_version
    parsed_version = parse_version(config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/_get_version_impl.py", line 52, in parse_version
    or parse_scm_version(config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/_get_version_impl.py", line 37, in parse_scm_version
    return _entrypoints.version_from_entrypoint(config, entrypoint, root)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/_entrypoints.py", line 38, in version_from_entrypoint
    maybe_version: version.ScmVersion | None = fn(root, config=config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/git.py", line 201, in parse
    return _git_parse_inner(
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/git.py", line 245, in _git_parse_inner
    version = version_from_describe(wd, config, describe_command)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/git.py", line 233, in version_from_describe
    return describe_res.parse_success(parse=parse_describe)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/_run_cmd.py", line 71, in parse_success
    return parse(self.stdout)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/git.py", line 231, in parse_describe
    return meta(tag=tag, distance=distance, dirty=dirty, node=node, config=config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/version.py", line 210, in meta
    parsed_version = _parse_tag(tag, preformatted, config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/version.py", line 192, in _parse_tag
    version = tag_to_version(tag, config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/version.py", line 93, in tag_to_version
    tag_dict = _parse_version_tag(tag, config)
  File "~/venv/lib/python3.8/site-packages/setuptools_scm/version.py", line 49, in _parse_version_tag
    match = config.tag_regex.match(str(tag))
AttributeError: 'str' object has no attribute 'match'

I can work around this by compiling the tag_regex in setup.py, is that intended?

[RonnyPfannschmidt]

thats the workaround, that its not done in the integration is a bug

note that setup_requires should no longer be used

[jaap3]

Thanks for the quick follow up!