[sco1]

Running mypy as a pre-commit hook is a bad idea for many reasons, primarily being a relatively really heavy runtime cost, plus you're running it on the entire codebase since it's going to follow your imports.

Many people, including myself, also like making atomic commits that may not be fully typed yet. Conditioning people to skip the hook(s), doubly so during a gradual typing rollout, just conditions them to skip them always. Leave it in CI where it's checked at a point in time where it actually matters.