Python use case: Use importlib.metadata.files to call just from a Python package that depends on rust-just!

[blakeNaccarato]

I'm planning to build out a tool that maps some Justfile recipes to a Python CLI (allowing to keep the implementation in one place). This would use subprocess.run directly on just.exe, but the problem was in finding a reliable way to locate just.exe if installed via e.g. pip install rust-just.

Well, I think files from importlib.metadata is the way to go. It produces objects that have a .locate() method to find their actual place, which is a bit more robust than, idk, Path(sys.executable).parent / "just.exe" or something to try and navigate to the bin/scripts directory manually.

Anyways, if anyone else is hacking together some abomination of a Python package that calls just like myself, this is an option!

from importlib.metadata import files
from pathlib import Path

# Gets the path to the `just` executable installed in a Python environment
just = (
    Path(
        next(p for p in (files("rust-just") or []) if p.stem.endswith("just")).locate()
    )
    .resolve()
    .as_posix()
)