Viacheslav Hletenko
Is it possible to say darker do not check quotes format? https://github.com/vyos/vyos-1x/actions/runs/15839019126/job/44648182916?pr=4574#step:7:29

John Estabrook
My understanding is that Black, hence Darker, insists on double quotes; one can skip the check all together with --skip-string-normalization, but not set preference to single quotes:
https://github.com/psf/black/issues/118#issuecomment-393298377
https://github.com/psf/black/issues/373#issuecomment-580238240

Taras Pudiak
The problem seems to be that ruff doesn't use our ruff.toml configuration file because there we've changed style to a single quotes.
I'm recalling that probably that was the reason why that second one (now removed) improper ruff check was introduced as a temporary solution.

Also darker check throws below
Baseline linting support has been moved to the Graylint package. Please install
and run it using:

pip install graylint
graylint -L CMD <directory>
graylint --lint CMD <directory>

See https://pypi.org/project/graylint for more information."
(RUFF check not working)