{ mkDerivation, attoparsec, base, bytestring, cryptohash-sha512
, fetchurl, quickcheck-instances, tasty, tasty-hunit
, tasty-quickcheck
}:
mkDerivation {
  pname = "crypt-sha512";
  version = "0";
  src = fetchurl {
    url = "http://example.org/";
    sha256 = "abc";
  };
  libraryHaskellDepends = [
    attoparsec base bytestring cryptohash-sha512
  ];
  testHaskellDepends = [
    base bytestring quickcheck-instances tasty tasty-hunit
    tasty-quickcheck
  ];
  homepage = "https://github.com/phadej/crypt-sha512";
  description = "Pure Haskell implelementation for GNU SHA512 crypt algorithm";
  license = stdenv.lib.licenses.bsd3;
}