Support for mono-repos?

[roman]

Context

As a developer that works on a project inside a monorepo
I would like to inject a pre-commit hook on a subdirectory of the git repo
So that I can take advantage of the fantastic pre-commit-hooks.nix tool

Problem

When we have a flake.nix file with a pre-commit setup that runs the shellHook on a sub-directory of the repository, the pre-commit-hooks.nix tool doesn't install the pre-commit hooks. Instead, it reports:

WARNING: pre-commit-hooks.nix: .git not found; skipping installation.

Current behavior

It seems pre-commit-hooks.nix assumes that the flake.nix file and the .git folder are in the same directory.

Expected behaviour

Ideally, we can get a pre-commit-hook installation that works only on the sub-directory of the repository that contains the flake.

Is this possible?

[domenkozar]

It's currently not possible, but that could be taken into account together with #196

[roman]

I think I can unblock with some less demanding change. I notice that if we make the .git directory check in the installation script traverse parent directories, things work as expected.

I created a PR with such a change. The PR is currently failing as it requires a package that I added to nixpkgs.

[tennox]

I dug into the changes linked here - up until 3973f37, but I can't figure out how to use pre-commit hooks in a monorepo 🤔 😞

My devenv & hooks are defined in a subdirectory, but nix flake check --impure . does nothing.

Any pointers?

Edit: while realizing this I'm thinking I might just be not using git-hooks.nix right - and it's not about monorepo... will report back 🙈