Replace afew/version.py with importlib.metadata.version

[wentasah]

Previously, afew/version.py was generated by setuptools. Without this file, one gets errors like this:

Traceback (most recent call last):
  File "/nix/store/mkdw047dmy7ipd1g1pqyrjhp29ldasna-afew-4.0.1/bin/.afew-wrapped", line 6, in <module>
    from afew.commands import main
  File "/nix/store/mkdw047dmy7ipd1g1pqyrjhp29ldasna-afew-4.0.1/lib/python3.14/site-packages/afew/commands.py", line 16, in <module>
    from afew.version import version
ModuleNotFoundError: No module named 'afew.version'

[flokli]

Mmmh, https://setuptools-scm.readthedocs.io/en/latest/usage/ says in their pyproject.toml example:

# No [tool.setuptools_scm] section needed for basic usage!

So I'm a bit baffled this changed when switching from using a setup.py to pyproject.toml in e1fe434.

[wentasah]

I'm no Python packaging expert, but I understand that generating of version.py is not considered basic usage. As documented here, basic usage is perhaps using importlib.metadata to access the version info.

[mweinelt]

The correct fix is to migrate the version action to use importlib.metadata.version("afew").

[wentasah]

Updated the PR based on @mweinelt's suggestion.

[flokli]

Thanks. I also now understand why things initially looked fine locally, I still had a generated version.py file in my checkout, which was .gitignored.

I'll remove it from .gitignore in a followup, then tag a new release.