{ mkDerivation, base, fetchurl, mtl, transformers
, transformers-compat
}:
mkDerivation {
  pname = "mmorph";
  version = "1.1.0";
  src = fetchurl {
    url = "http://example.org/";
    sha256 = "abc";
  };
  libraryHaskellDepends = [
    base mtl transformers transformers-compat
  ];
  description = "Monad morphisms";
  license = stdenv.lib.licenses.bsd3;
}