{lib, ...}: {
  options.u = {
    tmux = {
      plugins = lib.mkOption {
        type = lib.types.listOf lib.types.package;
        description = "tmux plugins to source in config";
      };
      extraConfig = lib.mkOption {
        type = lib.types.lines;
        description = "extra config to append to bottom of config";
        default = "";
      };
    };
  };
}