Hmm another thing with black. I can run

black --extend-exclude=blah/.* blah/

and nothing is formatted. If I add the arg

[black]
args = ["--extend-exclude=blah/.*"]

It tries to format blah 😕

You'll need to use

skip_black=True

on the targets, I think. https://www.pantsbuild.org/docs/python-linters-and-formatters#running-only-certain-formatters-or-linters

Thank you