anchor.diff:      ${WINDOW_MANAGER} \
       ${DESKTOP_APPS} \
       vc-graphics-hardfp \
  +    linux-firmware \
       bcm2835-tests \
       bash \
       nano \
       zram \
       gkrellm \
       cpufrequtils \
  -    connman-tests \
  +    python-shell \
       packagegroup-base-alsa \
       alsa-utils-speakertest \
       mpd \
  
positive.code: # possible values are internal or external
  CUSTOM_FEED_CONFIG ?= "external"
  
  IMAGE_INSTALL = "\
      ${CORE_IMAGE_BASE_INSTALL} \
      ${CORE_IMAGE_EXTRA_INSTALL} \
  
negative.code:     sysfsutils \
      bluez-hcidump \
      bluez4-agent \
      wpa-supplicant \
  "
  
  # core-image bbclass provides core-boot and base packages
  