mix-format

```console > Mix requires the Hex package manager to fetch dependencies > Shall I install Hex? (if running non-interactively, use "mix local.hex --force") [Yn] ** (Mix) Could not find an SCM for dependency :castore from TeslaMate.MixProject > > treefmt: error: formatting failure: formatter '/nix/store/r2bjg78m7b7s75lwcgn69svk010j3sqb-elixir-1.17.3/bin/mix' with options '[format]' failed to apply: exit status 1 ``` **To Reproduce** ```nix programs.mix-format.enable = true; ``` and run check on x86_64. See https://github.com/teslamate-org/teslamate/issues/4294