anchor.diff:      jdee = linux;
     };
   
  +  /*
     firefox36Pkgs.firefox = linux;
     firefox40Pkgs.firefox = linux;
   
  
positive.code:     xfdesktop = linux;
      xfwm4 = linux;
    };
  
  } ))
  
  
negative.code: 
    tarball = import ./make-tarball.nix;
  
  } // (mapTestOn (/* (packagesWithMetaPlatform pkgs) // */ rec {
  
    MPlayer = linux;
    abcde = linux;
  