Usage with `pre-commit` about gitlint

[asottile]

The interface for pre-commit is to pass a single argument on the commandline that is the commit-msg filename. It seems that gitlint doesn't have an interface which enables this -- I'll see if I can't craft a PR.

A workaround would be to use the interface that gitlint uses in its hook file, something like this:

-   id: gitlint
    name: gitlint
    language: python
    entry: bash -c 'cat "$@" | python -m gitlint.cli' --
    stages: [commit-msg]

[sobolevn]

@asottile thanks! That's almost the same I came up with.

Take a look: https://github.com/wemake-services/wemake-django-template/blob/master/%7B%7B%20cookiecutter.project_name%20%7D%7D/.pre-commit-config.yaml

[asottile]

@sobolevn the problem with that definition is it'll be linting the commit that already happened and you really want it to be checking the in-progress commit :)