anchor.diff:    nativeBuildInputs = [ perl pkgconfig texinfo yasm ];
   
     buildInputs = [
  -    bzip2 fontconfig freetype libiconv lame libass libogg libtheora libvdpau
  -    libvorbis lzma SDL soxr x264 xvidcore zlib
  +    bzip2 fontconfig freetype gnutls libiconv lame libass libogg libtheora
  +    libvdpau libvorbis lzma SDL soxr x264 xvidcore zlib
     ] ++ optional openglSupport mesa
       ++ optionals (!isDarwin) [ libvpx pulseaudio ] # Need to be fixed on Darwin
       ++ optional (isLinux || isFreeBSD) libva
  
positive.code:        else
           "--disable-pthreads --disable-w32threads")
        (ifMinVer "0.9" "--disable-os2threads") # We don't support OS/2
        (ifMinVer "2.4" "--enable-pixelutils")
      # Executables
        "--enable-ffmpeg"
  
negative.code:       (ifMinVer "0.6" "--disable-doc")
      # External Libraries
        "--enable-bzlib"
        "--enable-gnutls"
        (ifMinVer "1.0" "--enable-fontconfig")
        (ifMinVer "0.7" "--enable-libfreetype")
        "--enable-libmp3lame"
  