memacs_lastfm not working for macOS install with pipx

[metbril]

I installed memacs using pipx. Homebrew was not working and pip3 is giving me deprecation notices.

After installing memacs using

$ pipx install memacs

I tried running memacs_lastfm. This has been working in the past (about a year ago; memacs was running from the homebrew bin folder). I now get an error:

$ memacs_lastfm
Traceback (most recent call last):
  File "/Users/robert/.local/bin/memacs_lastfm", line 5, in <module>
    from bin.memacs_lastfm import main
  File "/Users/robert/.local/pipx/venvs/memacs/lib/python3.13/site-packages/bin/memacs_lastfm.py", line 4, in <module>
    from memacs.lastfm import LastFM
  File "/Users/robert/.local/pipx/venvs/memacs/lib/python3.13/site-packages/memacs/lastfm.py", line 8, in <module>
    import pylast
ModuleNotFoundError: No module named 'pylast'

I don't know what's wrong and how I can fix this.

[metbril]

After some searching and browsing, I found that one can "inject" additional libraries in the venv:

$ pipx inject memacs pylast

I see this as a workaround, since the module should have been available in the package itself.

[metbril]

For macOS you need to install memacs with pipx including all dependencies with this command:

$ pipx install 'memacs[all]'

(mind the quotes)

[novoid]

If somebody has a good idea how I may define Python dependencies such that they are only installed when a particular module is actually used, let me know. To my current knowledge, I actually would need to split up Memacs into the base and keep all modules in separate repositories.