anchor.diff:      libtheora
       libv4l
       libvorbis
  +    ncurses
       perl
       speex
       vcdimager
  
positive.code: , libtheora
  , libv4l
  , libvorbis
  , perl
  , pkg-config
  , speex
  
negative.code:     libxcb
    ]);
  
    enableParallelBuilding = true;
  
    NIX_LDFLAGS = "-lxcb-shm";
  
  
    meta = with lib; {
      homepage = "http://www.xinehq.de/";
  