anchor.diff:  
         fixupPhase
       '';
  +
  +    meta = common.meta // args.meta or {};
     });
   
   in {
  
positive.code:     pluginUi = "GTK";
      isUi = true;
      buildDirs = [ "avidemux/gtk" ];
    };
  
    avidemux_common = buildPlugin {
  
negative.code: }:
  
  let
    version = "2.6.20";
  
    src = fetchurl {
      url = "mirror://sourceforge/avidemux/avidemux/${version}/avidemux_${version}.tar.gz";
      sha256 = "17zgqz6i0bcan04wqwksf7y4z73vxmabcpnd9y5nhx7br5zwpih3";
    };
  
    common = {
  