anchor.diff:  , alsa-lib
   , avahi
   , boost
  -, fixesproto
   , grpc
   , ice
  -, inputproto
   , libbsd
   , libcap
   , libsndfile
  
positive.code: , speech-dispatcher
  , speex
  , speexdsp
  , xproto
  
  , mumbleOverlay ? true
  , releaseType ? "release"
  
negative.code:     speech-dispatcher
      speex
      speexdsp
      xorgproto
    ] ++ optionals (config == "murmur") [
      grpc
      ice
  