If you use Ruff in CI to check your Python code (and if not, what’s wrong with you, start ASAP!), there’s a breaking change in the new 0.1.0 version released yesterday. Change the --output= arg to --output-format and you’ll be back up and running.
The Ruff team did bump the minor version when they made the change. If you’re like me and hadn’t bothered pinning it because “they’ve had 293 releases so far, what’s the likelihood it’ll change?”, fix that too while you’re in there.
