anchor.diff:  , snappy
   , soxr
   , speex
  +, speexdsp
   , tesseract
   #, twolame
   #, utvideo
  
positive.code:     "--${boolEn (samba_client != null)}-libsmbclient"
      "--${boolEn (snappy != null)}-libsnappy"
      "--${boolEn (soxr != null)}-libsoxr"
      "--${boolEn (speex != null)}-libspeex"
      "--${boolEn (libssh != null)}-libssh"
      #(fflag "--${boolEn (tesseract != null)}-libtesseract" "3.0")
      /**/(fflag "--disable-libtesseract" "3.0")
  
negative.code:     soxr
      snappy
      speex
      speexdsp
      tesseract
      v4l_lib
      vid-stab
  