action failed: Error getting the version from source

[mathause]

The action failed because the package could not be installed

minimum-dependency-versions/action.yaml

Line 37 in 3db8e1c

python -m pip install ${{ github.action_path }}

with the following error

LookupError: Error getting the version from source vcs: setuptools-scm was unable to detect version for /home/runner/work/_actions/xarray-contrib/minimum-dependency-versions/v1.0.0.

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

Alternatively, set the version with the environment variable SETUPTOOLS_SCM_PRETEND_VERSION_FOR_${NORMALIZED_DIST_NAME} as described in https://setuptools-scm.readthedocs.io/en/latest/config/

• We may have to add .gitattributes and .git_archival.txt files or define a fallback.
• I see you use hatch-vcs but the error message says setuptools-scm. Is hatch-vcs using setuptools-scm under the hood or is something going wrong.

GHA workflow:

https://github.com/regionmask/regionmask/actions/runs/20333890999/job/58415541269?pr=640

[mathause]

Ok this is the same as you got in pydata/xarray#11027 (comment)

[keewis]

yeah, I'm considering moving the package into a separate repository (which would allow uploading it to PyPI), and then the action could either be deprecated or become much simpler. It would also allow reproducing the result locally.

Other options would include hard-coding the package version, or not installing the package (instead you'd set PYTHONPATH).

Is hatch-vcs using setuptools-scm under the hood

looks like it depends on setuptools-scm. The reason for the error is that actions are shallow-cloned, which does not include the most recent tag (and unlike direct calls to actions/checkout we can't customize that).