Comment by tuetuopay

Doing a lot of Rust, there is one huge benefit of having cargo handle rustfmt: it knows the fileset you're talking about. It will not blindly format all rust files in the cwd, rather the "current" crate (current having the same definition as cargo!).

Translating this to uv, this will streamline having multiple python packages in the same directory/git repo, and leave e.g. vendored dependencies alone.

Also, since their goal really is "making cargo for python", it will likely support package-scoped ruff config files, instead of begin file- or directory-based.