Add support for building Ubuntu Core 24 images.

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (24.04.53) UNRELEASED; urgency=medium
+
+  * Add support for building Ubuntu Core 24 images.
+
+ -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@ubuntu.com>  Thu, 28 Mar 2024 12:10:15 +0100
+
 livecd-rootfs (24.04.52) noble; urgency=medium
 
   * Move from hwe-22.04 to hwe-24.04 throughout, hwe-22.04 is obsolete and

live-build/auto/config

@@ -476,25 +476,14 @@ case $IMAGEFORMAT in
 					;;
 				*) ;;
 			esac
-			case $SUITE in
-				xenial)
-					# Ubuntu Core 16
-					UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS -c $CHANNEL"
-					;;
-				bionic)
-					# Ubuntu Core 18
-					MODEL="ubuntu-core-18-${MODEL#pc-}"
-					UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS -c $CHANNEL"
-					;;
-				*)
-					if [ "$SUITE" = "focal" ]; then
-						CORE_MAJOR=20
-					else
-						CORE_MAJOR=22
-					fi
-					# Ubuntu Core 2x
-					# Currently uc2x assertions do not support global
-					# channel overrides, instead we have per-channel models
+
+			# Ubuntu Core 24
+			# For now we stick to updating this by hand, but a more tasteful solution
+			# will follow
+			CORE_MAJOR=24
+
+			# Currently uc24 assertions do not support global channel overrides,
+			# instead we have per-channel models
 			case $CHANNEL in
 				stable)
 					MODEL="ubuntu-core-${CORE_MAJOR}-${MODEL#pc-}"
@@ -516,8 +505,6 @@ case $IMAGEFORMAT in
 					exit 1
 					;;
 			esac
-					;;
-			esac
 
 			case "$ARCH+${SUBARCH:-}" in
 				amd64+kassel)