{ mkDerivation, ansi-terminal, base, fetchurl, haskell-lexer }:
mkDerivation {
  pname = "colorize-haskell";
  version = "1.0.1";
  src = fetchurl {
    url = "http://example.org/";
    sha256 = "abc";
  };
  isLibrary = true;
  isExecutable = true;
  libraryHaskellDepends = [ ansi-terminal base haskell-lexer ];
  executableHaskellDepends = [ ansi-terminal base haskell-lexer ];
  homepage = "http://github.com/yav/colorize-haskell";
  description = "Highligt Haskell source";
  license = stdenv.lib.licenses.bsd3;
}