anchor.diff:        tcpdump
         wget
         bind
  +      traceroute
       ];
     };
   
  
positive.code:     linux = [ pylint ];
    };
  
  in
    rec {
      allowUnfree = true;
  
negative.code:           ++ go-env
            ++ node-env
            ++ ocaml-env
            ++ python2-env
            ++ scala-env;
        };
      };
    }
  