release fails since build dependencies aren't installed while asking for the version

[yarikoptic]

we are using

      - name: Prepare release
        uses: datalad/release-action/release@master
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          pypi-token: ${{ secrets.PYPI_TOKEN }}
          pre-tag: |
            pkg="$(python setup.py --name)"
            printf '__version__ = "%s"\n' "$new_version" > "$pkg"/version.py
            git commit -m "Update __version__ to $new_version" "$pkg"/version.py

but now that step fails with

Run pkg="$(python setup.py --name)"
Traceback (most recent call last):
  File "/home/runner/work/datalad-container/datalad-container/setup.py", line 3, in <module>
    from setuptools import setup
ModuleNotFoundError: No module named 'setuptools'

@jwodder - do you have an immediate recipe for the remedy?

should we just pip install . in pre-tag before running that pkg= ? but that would install all unnecessary stuff... we could just pip install setuptools but that feels ad-hoc

[jwodder]

@yarikoptic

• Why query pkg in this way instead of just writing "datalad_container"?
• As part of the move towards pyproject.toml-based builds, invoking python setup.py <anything> is now deprecated, and setuptools is no longer bundled with Python (hence the error you're seeing).

should we just pip install . in pre-tag before running that pkg= ?

I fail to see how doing that would make python setup.py --name succeed.

[yarikoptic]

@yarikoptic

• Why query pkg in this way instead of just writing "datalad_container"?

I guess that in eeea9db you tried to use some generic pattern so we could use s.across various packages. but yeah -- could be hardcoded I guess.

• As part of the move towards pyproject.toml-based builds, invoking python setup.py <anything> is now deprecated, and setuptools is no longer bundled with Python (hence the error you're seeing).

I see. good. I guess we could follow up my dirty fixes with hardcoding the name there and thus simplifying it all and that would close this issue