Say you have a custom lint you want to use but it only will ever be used for that specific project. You can’t just put the lint code in a subdirectory. It has to go in a separate repo.
You can run locally defined hooks with pre-commit, just define them in the repo: local section of the .pre-commit-config.yaml, and have it run a bash/python/whatever script or something that invokes your custom linting, wherever it lives in your file structure.
It will install pylint fine, but if your project does e.g. import yaml, it’s not going to set up a venv and install pyyaml for you.
Yeah I misspoke there. For Python based stuff, it uses the currently active virtualenv or your global python install, so it relies on you installing your own dependencies. Which isn’t really that big a deal imo, because you need to install those dependencies to run/debug/test locally anyways.