anchor.diff:        })
       ];
     };
  -
   in
     rec {
       allowUnfree = true;
  
positive.code:     ];
    };
  
    python-global = [
      (python27Full.buildEnv.override {
        extraLibs = with python27Packages; [
          jedi
        ];
      })
      (python3.buildEnv.override {
        extraLibs = with python35Packages; [
          jedi
        ];
      })
    ];
  
    games = pkg-set {
      linux = [
        (dwarf-fortress.override {
  
negative.code:           ++ dev-tools
            ++ go-env
            ++ node-env
            ++ x11
            ++ games;
        };
  