generic: {
  v50 = generic {
    version = "5.0.19";
    sha256 = "sha256-esa7DczdaWiG8Ru9py8HlOhvhkjV8IQjMwuiJ6F5c6E=";
  };

  v40 = generic {
    version = "4.0.37";
    sha256 = "sha256-Wuexl8I2zA63jyTRDe8bMSP++imwSOxc4LEdUnH8jps=";
  };
}