A four-year old related discussion about setup.cfg is available at #3377 (comment)

Hello.

As far as I understand the meaning of pyproject.toml it's supposed to be a global project configuration.

Why should one set the config file manually or have meaningless symlinks everywhere when working in subdirectories?

Another good approach would be to set a stop for a project directory like it's done in black

I saw the comment at #3377 (comment).
It's a good point of view. I suggest mypy should stop search the configs when find .git directory or others VCS cache.
Will that help? @gvanrossum

Edit: I reviewed this comment, and I found I misunderstood you. You think the config will affect the subdirectories, that's true, but we actually want that affect subdirs. You don't need worried about different act about check parents or not (probably you can add a flag on the pyproject.toml to enable parent search if you really worried about it). If people want specific check, they should always write a config in that dir, or always add flags to their check command.

Dear @hauntsaninja, @ilevkivskyi, @AlexWaygood and @JukkaL, mentioning you as top 4

If I'd try to implement it somewhere around this line, would you consider reviewing the PR?

It could have the same fuse as pylint, so won't leave the repository in case of .git or .hg directory is presented

I can't guarantee I will have time to review the PR, but if it is straightforward, there is high chance that either me or someone else will review it.

Ok, here's the first shot #16965

It's exactly how it's done in the pylint, but with os.path instead of pathlibPath