anchor.diff:      };
       "9.9" = {  # Git
         fetchzipversion = 6;
  -      version = "2018.04.30";
  -      rev = "0807a771600956e1f3e36a202fd3877418541eb0";
  -      sha256 = "90a0a74d616c5334439f951e0a2496a36eb026e3c23f310f75e652427d91a810";
  +      version = "2018.05.10";
  +      rev = "974eb4aaaa7d96a996c61030fca4095c3c2c6284";
  +      sha256 = "a91659bba6197e0f44768965b9afa240c33bffc85c2c1a38e15597799d0c3b81";
       };
     };
     source = sources."${channel}";
  
positive.code: #, twolame
  #, utvideo
  , v4l_lib
  , vid-stab
  #, vo-aacenc
  , vo-amrwbenc ? null
  
negative.code:     "--${boolEn (sdl != null)}-sdl"
      "--${boolEn (sdl != null)}-sdl2"
      "--disable-securetransport"
      #(fflag "--${boolEn (vapoursynth != null)}-vapoursynth" "4.1")
      /**/(fflag "--disable-vapoursynth" "4.1")
      #"--${boolEn (libx11 != null && libxv != null)}-xlib"
      "--${boolEn (zlib != null)}-zlib"
      /*
  