I'm trying to understand the

mypy

tool behavior, and I'm unclear from the current docs and I'm not sure if the GitHub issues I've found are outdated: does pants' mypy setup use whichever mypy configuration is found closest to the source it is run against? Or is it a single mypy config for the entire repo? I've seen some older GH issues, but they seem to mainly discuss the need for partitioning requirements, rather than config inheritance itself.

This maybe? I believe you must turn it on. https://www.pantsbuild.org/dev/reference/subsystems/mypy#config_discovery

I saw that config, but then after reading open GH issues like this one, and checking the source code it seems that mypy does not offer any kind of multi-config setup even with the

[mypy].config_discovery

setting enabled. The relevant bits of code: 1. the mypy fieldset's config_request method 2. the find_config_file rule