Per discussion with Adam, don't make this an LB_ variable since it's not actually part of live-build; instead we will look to pass it into the environment through launchpad-buildd

live-build/auto/config

@@ -618,7 +618,6 @@ lb config noauto \
 echo "LB_CHROOT_HOOKS=\"$CHROOT_HOOKS\"" >> config/chroot
 echo "LB_BINARY_HOOKS=\"$BINARY_HOOKS\"" >> config/binary
 echo "BUILDSTAMP=\"$NOW\"" >> config/binary
-echo "LB_IMAGE_FLAVORS=\"$IMAGE_FLAVORS\"" >> config/binary
 
 case $ARCH+$SUBARCH in
 	armhf+raspi2)

live-build/ubuntu-cpc/hooks/040-qcow2-image.binary

@@ -1,6 +1,6 @@
 #!/bin/bash -ex
 
-case $LB_IMAGE_FLAVORS in
+case $IMAGE_TARGETS in
 	""|*qcow2*)
 		;;
 	*)

live-build/ubuntu-cpc/hooks/040-vmdk-image.binary

@@ -9,7 +9,7 @@ case $ARCH in
                      exit 0;;
 esac
 
-case $LB_IMAGE_FLAVORS in
+case ${IMAGE_TARGETS:-} in
 	""|*vmdk*)
 		;;
 	*)

live-build/ubuntu-cpc/hooks/041-vmdk-ova-image.binary

@@ -15,7 +15,7 @@ case $ARCH in
                      exit 0;;
 esac
 
-case $LB_IMAGE_FLAVORS in
+case ${IMAGE_TARGETS:-} in
 	""|*ova*)
 		;;
 	*)

live-build/ubuntu-cpc/hooks/042-vagrant.binary

@@ -15,7 +15,7 @@
 # some packages in it, convert it to a vmdk, and then assemble the vagrant
 # box.
 
-case $LB_IMAGE_FLAVORS in
+case $IMAGE_TARGETS in
 	""|*vagrant*)
 		;;
 	*)