anchor.diff:    xulrunnerWrapper = {application, launcher}:
       import ../development/interpreters/xulrunner/wrapper {
         inherit stdenv application launcher;
  -      xulrunner = firefox36Pkgs.xulrunner;
  +      xulrunner = firefox40Pkgs.xulrunner;
       };
   
   
  
positive.code: 
    filelight = newScope pkgs.kde4 ../applications/misc/filelight { };
  
    firefox = firefox36Pkgs.firefox;
    firefoxWrapper = firefox36Wrapper;
  
    firefox36Pkgs = callPackage ../applications/networking/browsers/firefox/3.6.nix {
      inherit (gtkLibs) gtk pango;
  
negative.code:     inherit (gnome) libIDL;
    };
  
    firefox40Wrapper = wrapFirefox firefox40Pkgs.firefox "firefox" "";
  
    flac = callPackage ../applications/audio/flac { };
  
  