{
  config,
  lib,
  pkgs,
  ...
}:
let
  packages = builtins.attrValues {
    inherit (pkgs) ruby; # Ruby interpreter
    inherit (pkgs.rubyPackages) solargraph; # LSP for Ruby
  };
in
{
  options = {
    my.dev.ruby.enable = lib.mkEnableOption "Install Ruby tooling globally";
    devShells.ruby = lib.mkOption {
      type = lib.types.package;
      default = pkgs.mkShell {
        inherit packages;
        name = "ruby-dev-shell";
        shellHook = ''
          echo "💎 Ruby dev environment"
        '';
      };
      description = "Ruby development shell with interpreter and Solargraph LSP";
    };
  };
  config = lib.mkMerge [
    (lib.mkIf config.my.dev.ruby.enable {
      users.users.jawz = { inherit packages; };
    })
    {
      environment.variables = {
        GEM_HOME = "\${XDG_DATA_HOME}/ruby/gems";
        GEM_PATH = "\${XDG_DATA_HOME}/ruby/gems";
        GEM_SPEC_CACHE = "\${XDG_DATA_HOME}/ruby/specs";
      };
    }
  ];
}