generic: {
  v44 = generic {
    version = "4.4.1";
    sha256 = "0jjn2przn9s25slrcxmq8iqdgqkgxnqs45zy0n1ma6nlgmclxxqb";
  };

  v42 = generic {
    version = "4.2.7";
    sha256 = "09znh8x1sass5mw6wjrfmizjbfls8ad2c16y24ldfj40hlfxz6wx";
  };

  v40 = generic {
    version = "4.0.14";
    sha256 = "0igdxxfc61rqx6r7r81jsmv2d7nxw4whai211gk3y88dfm7l4xkb";
  };

  v30 = generic {
    version = "3.0.28";
    sha256 = "16966danf5ww4lhjg5gx5bnpid8abxh2ymdg6k5mymrman5bcdjj";
  };
}