{ mkDerivation, base, fetchurl, filepath, process }:
mkDerivation {
  pname = "funcmp";
  version = "1.8";
  src = fetchurl {
    url = "http://example.org/";
    sha256 = "abc";
  };
  enableSeparateDataOutput = true;
  libraryHaskellDepends = [ base filepath process ];
  homepage = "http://savannah.nongnu.org/projects/funcmp/";
  description = "Functional MetaPost";
  license = stdenv.lib.licenses.gpl3;
}