anchor.diff:  
   # core-image bbclass provides core-boot and base packages
   inherit core-image
  +
  +XSERVER = " \
  +    packagegroup-core-x11 \
  +    packagegroup-core-x11-base \
  +    xkbcomp \
  +    xmodmap \
  +    xrdb \
  +    setxkbmap \
  +"    
   
   DESKTOP_APPS = " \
       imagemagick \
  
positive.code:     gkrellm \
      cpufrequtils \
      connman-tests \
      alsa-utils-speakertest \
      mpd \
      empcd \
  
negative.code: IMAGE_INSTALL = "\
      ${CORE_IMAGE_BASE_INSTALL} \
      ${CORE_IMAGE_EXTRA_INSTALL} \
      ${EXTRA_TIMEZONES} \
      ${XSERVER} \
      ${WINDOW_MANAGER} \
      ${DESKTOP_APPS} \
      userland \
  