anchor.diff:      owner = "flok99";
     };
   
  -  buildInputs = [ libmrss ];
  +  buildInputs = [ libmrss ] ++ stdenv.lib.optionals stdenv.isDarwin [ libiconv ];
     checkInputs = [ cppcheck ];
   
     postPatch = ''
  
positive.code: { stdenv, fetchFromGitHub, cppcheck, libmrss }:
  
  stdenv.mkDerivation {
    pname = "rsstail";
  
negative.code:     '';
      homepage = "http://www.vanheusden.com/rsstail/";
      license = licenses.gpl2Plus;
      platforms = platforms.unix;
    };
  }
  