I would like to use doit as a pre-commit hook. I have a couple of 'build' tasks that generate source files. These source files should be present and also up-to-date in each commit. Not only doesn't doit provide its own .pre-commit-hooks.yaml file, but i can't define my own hook using doit since doit will always return code 0. I would like to have an option which makes doit fail if one of the tasks run modified a file. Also I would like doit to provide a pre-configured pre-commit hook.