Race condition with PYTHONPATH

[ShadowLNC]

I'm unsure if this is an issue with linter-pylint specifically, but it is an issue caused by multiple packages interacting. Apologies if it is the wrong repository.

I am encountering an issue with linter-mypy which is the result of an incorrectly set PYTHONPATH environment variable. When set, this variable is equal to the linter-pylint setting of the same name (linter-mypy works when the variable is not set/is empty). Full issue details.

Since both linters will be running at the same time, and the occurrences of the issue are seemingly random, I highly suspect there is a race condition at play.