[CI] Issue with new setuptools-scm for version configuration in mne-python

[adam2392]

With 3bf04ed, there seems to be an issue when installing mne-python from GitHub with lines like:

python -m pip install --upgrade --progress-bar off --no-deps https://api.github.com/repos/mne-tools/mne-python/zipball/main

This occurs locally too:

(mne) adam2392@adams-mbp mne-connectivity % python -m pip install --upgrade --progress-bar off --no-deps https://api.github.com/repos/mne-tools/mne-python/zipball/main
Collecting https://api.github.com/repos/mne-tools/mne-python/zipball/main
  Downloading https://api.github.com/repos/mne-tools/mne-python/zipball/main (61.5 MB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [30 lines of output]
      /Users/adam2392/miniconda3/envs/mne/lib/python3.8/site-packages/setuptools/installer.py:27: SetuptoolsDeprecationWarning: setuptools.installer is deprecated. Requirements should be satisfied by a PEP 517 installer.
        warnings.warn(
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/private/var/folders/6_/sl83qtkd68x3_mvfys07_6qm0000gn/T/pip-req-build-06b35e6i/setup.py", line 58, in <module>
          setup(name=DISTNAME,
        File "/Users/adam2392/miniconda3/envs/mne/lib/python3.8/site-packages/setuptools/__init__.py", line 87, in setup
          return distutils.core.setup(**attrs)
        File "/Users/adam2392/miniconda3/envs/mne/lib/python3.8/site-packages/setuptools/_distutils/core.py", line 109, in setup
          _setup_distribution = dist = klass(attrs)
        File "/Users/adam2392/miniconda3/envs/mne/lib/python3.8/site-packages/setuptools/dist.py", line 462, in __init__
          _Distribution.__init__(
        File "/Users/adam2392/miniconda3/envs/mne/lib/python3.8/site-packages/setuptools/_distutils/dist.py", line 293, in __init__
          self.finalize_options()
        File "/Users/adam2392/miniconda3/envs/mne/lib/python3.8/site-packages/setuptools/dist.py", line 886, in finalize_options
          ep(self)
        File "/Users/adam2392/miniconda3/envs/mne/lib/python3.8/site-packages/setuptools/dist.py", line 907, in _finalize_setup_keywords
          ep.load()(self, ep.name, value)
        File "/private/var/folders/6_/sl83qtkd68x3_mvfys07_6qm0000gn/T/pip-req-build-06b35e6i/.eggs/setuptools_scm-7.1.0-py3.8.egg/setuptools_scm/integration.py", line 91, in version_keyword
          _assign_version(dist, config)
        File "/private/var/folders/6_/sl83qtkd68x3_mvfys07_6qm0000gn/T/pip-req-build-06b35e6i/.eggs/setuptools_scm-7.1.0-py3.8.egg/setuptools_scm/integration.py", line 63, in _assign_version
          _version_missing(config)
        File "/private/var/folders/6_/sl83qtkd68x3_mvfys07_6qm0000gn/T/pip-req-build-06b35e6i/.eggs/setuptools_scm-7.1.0-py3.8.egg/setuptools_scm/__init__.py", line 108, in _version_missing
          raise LookupError(
      LookupError: setuptools-scm was unable to detect version for /private/var/folders/6_/sl83qtkd68x3_mvfys07_6qm0000gn/T/pip-req-build-06b35e6i.
      
      Make sure you're either building from a fully intact git repository or PyPI tarballs. Most other sources (such as GitHub's tarballs, a git checkout without the .git folder) don't contain the necessary metadata and will not work.
      
      For example, if you're using pip, instead of https://github.com/user/proj/archive/master.zip use git+https://github.com/user/proj.git#egg=proj
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

Also occurs in mne-connectivity: https://app.circleci.com/pipelines/github/mne-tools/mne-connectivity/644/workflows/914de5ee-39ab-4ca1-8111-0362aec121e8/jobs/701

Also noticed this issue in mne-bids. I presume this is not an issue with mne-python, but just tracking it here in case anyone knows an easy work around.

[mscheltienne]

I had this issue too on another repository, pip install git+https://github.com/mne-tools/mne-python fixes the CI.

[larsoner]

Thanks @mscheltienne I adapted your solution to a few other repos, so I'll close

[adam2392]

Thanks!