[feature request] Also watch config files, like pyproject.toml in --watch mode.

[bgianfo]

It would be very nice if the watch mode would also watch for changes to configuration files.

Such a feature would make iterating on enabling new rulesets a lot easier.

[mikeleppane]

Hi! Would it be okay if I take a look on this (good first issue).
Proposal: detect changes in pyproject.toml and ruff.toml config files.

[charliermarsh]

@mikeleppane - Definitely! I haven't thought too hard about what's required, but feel free to ask questions here as they come up. My guess is that, in the match rx.recv() loop in crates/ruff_cli/src/lib.rs, we can check if the file ends in .toml, then re-run the code to generate the pyproject_strategy and other variables that make it into the commands::run::run call.

[charliermarsh]

Oh, we added this! From @mikeleppane in #4169.