anchor.diff:  
   EXTRA_TOOLS = " \
       bzip2 \
  +    chrony \
       coreutils \
       diffutils \
       dosfstools \
  
positive.code:     pianobar \
  "
  
  export IMAGE_BASENAME = "audio-image"
  
negative.code:     ifupdown \
      iproute2 \
      less \
      procps \
      sysfsutils \
      util-linux \
  