That’s interesting.

After some digging I found a “ruff.toml” in an unusual place for a unix’y command line tool (~/Library/Application Support/ruff/ruff.toml)

select = ["ALL"]
ignore = []
fixable = []
unfixable = []

I don’t know what put it there, certainly not my doing as far as I can remember. But that explains some things, I guess. 😱