anchor.diff:      disabled = isLua52;
       meta = {
         homepage = "https://github.com/luaforge/luazip";
  -      hydraPlatforms = stdenv.lib.platforms.linux;
  +      plaftorms = stdenv.lib.platforms.linux;
         license = stdenv.lib.licenses.mit;
       };
     };
  
positive.code: 
      meta = with stdenv.lib; {
        homepage = "http://w3.impa.br/~diego/software/luasocket/";
        hydraPlatforms = with platforms; [darwin linux freebsd illumos];
        maintainers = with maintainers; [ mornfall ];
      };
    };
  
negative.code:     };
      meta = {
        homepage = "http://www.tset.de/lpty";
        plaftorms = stdenv.lib.platforms.linux;
        license = stdenv.lib.licenses.mit;
      };
      preBuild = ''
  