mix-format hook not running on .heex files

[pikdum]

Ran into mix format --check failing in CI because my .heex files weren't formatted.

git-hooks.nix/modules/hooks.nix

Lines 3217 to 3223 in 16ec914

	mix-format = {
	name = "mix-format";
	description = "Runs the built-in Elixir syntax formatter";
	package = tools.elixir;
	entry = "${hooks.mix-format.package}/bin/mix format";
	files = "\\.exs?$";
	};

I think mix format is extensible, though, so maybe there could be some way to configure extra file extensions?
Or could just add .heex?

[pikdum]

Found this list of file extensions elsewhere that mix can format:

      extensions: [
        ".ex",
        ".exs",
        ".eex",
        ".heex",
        ".leex",
        ".neex",
        ".sface",
      ],

[sandydoo]

@pikdum, try setting hooks.mix-format.files = "\\.(exs?|heex)$". Does mix-format support this out of the box? If yes, then we can add it in. If not, then probably not.

[pikdum]

Yeah, looks like that works.