anchor.diff:  { lib, stdenv
   , fetchurl
  -, fetchpatch
   , meson
   , ninja
   , gettext
  -, config
   , pkg-config
   , python3
   , gst-plugins-base
  
positive.code:   };
  
    patches = [
      ./fix_pkgconfig_includedir.patch
    ];
  
  
negative.code: , x265
  , libxml2
  , srt
  , vo-aacenc
  }:
  
  assert faacSupport -> faac != null;
  