anchor.diff:      ]
       ++ lib.optional (! sambaSupport) "--disable-samba"
       ++ lib.optional vdpauSupport "--enable-vdpau"
  -    ++ lib.optional pulseSupport "--enable-pulse";
  +    ++ lib.optional pulseSupport "--enable-pulse"
  +    ++ lib.optional rtmpSupport "--enable-rtmp";
   
       postInstall = ''
         for p in $(ls $out/bin/) ; do
  
positive.code:     ++ lib.optional sambaSupport samba
      ++ lib.optional vdpauSupport libvdpau
      ++ lib.optional pulseSupport pulseaudio
      ++ lib.optional cecSupport libcec;
  
      dontUseCmakeConfigure = true;
  
  
negative.code:           --prefix LD_LIBRARY_PATH ":" "${systemd}/lib" \
            --prefix LD_LIBRARY_PATH ":" "${libmad}/lib" \
            --prefix LD_LIBRARY_PATH ":" "${libvdpau}/lib" \
            --prefix LD_LIBRARY_PATH ":" "${libcec}/lib" \
            --prefix LD_LIBRARY_PATH ":" "${rtmpdump}/lib"
        done
      '';
  
  