Pre-Commit is too slow

[DomNomNom]

Having pre-commit fail after 15 seconds with something that the linter knows how to fix is really annoying.

The linter with --cach --fix is too slow to be run after each file save (which works nicely in other languages like python with black).

Ideally we can make linting fast but I haven't seen a way of doing that. Having this check only at pre-push seems better than what we currently have.