...
# $IMAGE_INSTALL [5 operations]
#   _append /media/toshiba-usb3/work/test/setup-scripts/conf/local.conf:45
#     " hello"
#   _append /media/toshiba-usb3/work/test/setup-scripts/conf/local.conf:46
#     " phidgets"
#   append /media/toshiba-usb3/work/test/setup-scripts/sources/meta-angstrom/conf/distro/include/angstrom-core-tweaks.inc:109
#     "${IMAGE_BOOT}"
#   set data_smart.py:393 [finalize]
#     " ${IMAGE_BOOT} hello"
#   set data_smart.py:393 [finalize]
#     " ${IMAGE_BOOT} hello phidgets"
# computed:
#   " ${IMAGE_BOOT} hello phidgets"
IMAGE_INSTALL="systemd-compat-units                udev                 systemd                tinylogin hello phidgets"
...
IMAGE_INSTALL = systemd-compat-units udev systemd tinylogin hello phidgets
...