Cleanup and handle manifest-remove files

manifest-remove files are generated in all cases and removed for
projects/subprojects that don't need it like the new ubiquity.

live-build/auto/build

@@ -447,6 +447,12 @@ for OUTPUT in ext2 ext3 ext4 manifest manifest-remove size squashfs; do
 	chmod 644 "$PREFIX.$OUTPUT"
 done
 
+# we don't need a manifest-remove for a layered-aware installer
+if [ "$SUBPROJECT" = "ubiquity-ng" ]; then
+	rm -f livecd.${PROJECT}-manifest-remove
+	rm -f config/manifest-minimal-remove
+fi
+
 if [ -e config/manifest-minimal-remove ]; then
         cp config/manifest-minimal-remove  "$PREFIX.manifest-minimal-remove"
 fi

live-build/auto/config

@@ -396,7 +396,7 @@ case $PROJECT in
 		LIVE_TASK='ubuntu-live'
 
 		case ${SUBPROJECT:-} in
-			layered)
+			ubiquity-ng)
 				# LANG PASS for minimal and install
 				add_layered_pass_delta install-minimal desktop-minimal-default-languages '^desktop-minimal-(?!default-languages)[^.]+$'
 				add_layered_pass_delta install-minimal desktop-minimal-default-languages ''  # none (if no default langpack is selected)
@@ -768,7 +768,6 @@ case $SUBPROJECT in
 		;;
 esac
 
-if [ -z "${PASSES}" ]; then
 # we'll expand the base seed given here according to the STRUCTURE file, and
 # then look in all of the seeds found to see which snaps are seeded
 case $PROJECT:${SUBPROJECT:-} in
@@ -783,7 +782,7 @@ if [ -z "${PASSES}" ]; then
 		;;
 esac
 
-	if [ -n "${BASE_SEED}" ]; then
+if [ -z "$PASSES" ] && [ -n "${BASE_SEED}" ]; then
 	snap_from_seed "${BASE_SEED}" config/seeded-snaps
 fi
 
@@ -800,7 +799,6 @@ if [ -z "${PASSES}" ]; then
 		echo "failed to retrieve, not including."
 	fi
 fi
-fi
 
 export APT_OPTIONS
 
@@ -922,7 +920,6 @@ lb config noauto \
 echo "LB_CHROOT_HOOKS=\"$CHROOT_HOOKS\"" >> config/chroot
 echo "SUBPROJECT=\"${SUBPROJECT:-}\"" >> config/chroot
 echo "LB_DISTRIBUTION=\"$SUITE\"" >> config/chroot
-echo "IMAGEFORMAT=$IMAGEFORMAT" >> config/common
 if [ -n "$PASSES" ]; then
 	echo "PASSES=\"$PASSES\"" >> config/common
 fi

live-build/lb_binary_layered

@@ -60,7 +60,7 @@ build_layered_squashfs() {
 		mount_overlay ${lowerlayers} "chroot.${pass}/" chroot/
 	else
 		# first pass
-		rmdir chroot||true
+		rmdir chroot 2>/dev/null||true
 		ln -s "chroot.${pass}/" chroot
 	fi
 
@@ -122,4 +122,11 @@ umount chroot/
 PREFIX="livecd.$PROJECT${SUBARCH:+-$SUBARCH}"
 cp "livecd.${PROJECT}.${PASSPREFIX}${_PASS}.size" "$PREFIX.size"
 cp "livecd.${PROJECT}.${PASSPREFIX}${_PASS}.manifest.full" "$PREFIX.manifest"
-chmod 644 *.squashfs *.manifest *.manifest.full *.size
+
+# Ubiquity-compatible removal manifest for ISO not using a layered-aware installer
+if [ -n "$(ls livecd.${PROJECT}.[0-9][0-9]-live.manifest.full 2>/dev/null)" ] && \
+   [ -n "$(ls livecd.${PROJECT}.[0-9][0-9]-install.manifest.full 2>/dev/null)" ]; then
+	echo "$(diff livecd.${PROJECT}.[0-9][0-9]-live.manifest.full livecd.${PROJECT}.[0-9][0-9]-install.manifest.full | awk '/^< / { print $2 }')" > livecd.${PROJECT}-manifest-remove
+fi
+
+chmod 644 *.squashfs *.manifest* *.size