{ flake-parts-lib, lib, ... }:
{
  imports = [ ../en-us ];
  options.perSystem = flake-parts-lib.mkPerSystemOption (
    { config, pkgs, ... }:
    {
      options.languages.nix.enable = lib.mkEnableOption "Nix";
      config = lib.mkIf config.languages.nix.enable {
        editors.helix.languages = {
          language = [
            {
              name = "nix";
              language-servers = [
                "nil"
                "harper-ls"
                "typos"
              ];
              formatter = {
                command = "${config.treefmt.build.wrapper}/bin/treefmt";
                args = [
                  "--stdin"
                  ".nix"
                  "--quiet"
                ];
              };
              auto-format = true;
            }
          ];
          language-server.nil.command = "${pkgs.nil}/bin/nil";
        };
        treefmt.programs.nixfmt = {
          enable = true;
          strict = true;
        };
      };
    }
  );
}