anchor.diff:  , mpeg2dec, udev, gnutls, avahi, libcddb, libjack2, SDL, SDL_image
   , libmtp, unzip, taglib, libkate, libtiger, libv4l, samba, liboggz
   , libass, libva, libdvbpsi, libdc1394, libraw1394, libopus
  -, libvdpau
  +, libvdpau, libsamplerate
   , onlyLibVLC ? false
   , qt4 ? null, qt5 ? null, withQt5 ? false
   , jackSupport ? false
  
positive.code:       "--enable-ncurses"
        "--enable-vdpau"
        "--enable-dvdnav"
      ]
      ++ optional onlyLibVLC  "--disable-vlc";
  
  
negative.code:       udev gnutls avahi libcddb SDL SDL_image libmtp unzip taglib
        libkate libtiger libv4l samba liboggz libass libdvbpsi libva
        xlibs.xlibs xlibs.libXv xlibs.libXvMC xlibs.libXpm xlibs.xcbutilkeysyms
        libdc1394 libraw1394 libopus libebml libmatroska libvdpau libsamplerate
      ]
      ++ (if withQt5 then with qt5; [ base ] else [qt4])
      ++ optional jackSupport libjack2;
  