{ mkDerivation, base, fetchurl, integer-gmp, mpfr }:
mkDerivation {
  pname = "hmpfr";
  version = "0.4.3";
  src = fetchurl {
    url = "http://example.org/";
    sha256 = "abc";
  };
  enableSeparateDataOutput = true;
  libraryHaskellDepends = [ base integer-gmp ];
  librarySystemDepends = [ mpfr ];
  homepage = "https://github.com/michalkonecny/hmpfr";
  description = "Haskell binding to the MPFR library";
  license = stdenv.lib.licenses.bsd3;
}