{ mkDerivation, base, containers, fetchurl, parsec }:
mkDerivation {
  pname = "hjson";
  version = "1.3.2";
  src = fetchurl {
    url = "http://example.org/";
    sha256 = "abc";
  };
  libraryHaskellDepends = [ base containers parsec ];
  description = "JSON parsing library";
  license = stdenv.lib.licenses.bsd3;
}