anchor.diff:  
     icedtea7_web = callPackage ../development/compilers/icedtea-web {
       jdk = jdk7;
  -    xulrunner = firefox-unwrapped;
     };
   
     icedtea8_web = callPackage ../development/compilers/icedtea-web {
       jdk = jdk8;
  -    xulrunner = firefox-unwrapped;
     };
   
     icedtea_web = self.icedtea8_web;
  
positive.code: 
    omxplayer = callPackage ../applications/video/omxplayer { };
  
    oneteam = callPackage ../applications/networking/instant-messengers/oneteam {
      xulrunner = firefox-unwrapped;
    };
  
    openbox = callPackage ../applications/window-managers/openbox { };
  
  
negative.code:   zuki-themes = callPackage ../misc/themes/zuki { };
  
    zoom-us = qt55.callPackage ../applications/networking/instant-messengers/zoom-us {};
  
    xulrunner = firefox-unwrapped;
  }
  