anchor.diff:  
     configureFlags = [
       "--enable-application=${application}"
  +    "--with-system-ffi"
       "--with-system-jpeg"
       "--with-system-zlib"
       "--with-system-libevent"
       "--with-system-libvpx"
       "--with-system-png" # needs APNG support
       "--with-system-icu"
  -    "--enable-system-ffi"
       "--enable-system-pixman"
       "--disable-tests"
       "--disable-updater"
  
positive.code:     libevent libstartup_notification
      libpng glib
      nasm icu libvpx
      libwebp
      nspr nss
    ]
  
negative.code: , freetype, fontconfig, file, nspr, nss
  , libGLU, libGL, sqlite, unzip, makeWrapper
  , hunspell, libevent, libstartup_notification
  , libffi
  , libvpx
  , libwebp
  , icu, libpng, glib, pciutils
  