First batch of changes for raspi desktop.

live-build/auto/config

@@ -445,6 +445,11 @@ case $IMAGEFORMAT in
 					;;
 			esac
 
+			if [ "$SUBPROJECT" = "desktop-preinstalled" ]; then
+				BRANCH="desktop"
+			fi
+
+			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${SUBPROJECT:+ --subproject \"$SUBPROJECT\"}"
 			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${PROPOSED:+ --with-proposed}"
 			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${EXTRA_PPAS:+ --extra-ppas \"$EXTRA_PPAS\"}"
 
@@ -472,6 +477,7 @@ case $IMAGEFORMAT in
 		# Currently the IMAGEFORMAT none format is used only for ubuntu-image
 		# targeted image builds which, currently, only target physical devices.
 		OPTS="${OPTS:+$OPTS }--chroot-filesystem $IMAGEFORMAT"
+		PREINSTALLED=true
 		;;
 	*)
 		case $PROJECT in
@@ -519,7 +525,7 @@ if [ "$PREINSTALLED" = "true" ]; then
 			add_package live oem-config-gtk ubiquity-frontend-gtk
 			add_package live ubiquity-slideshow-ubuntu
 			if [ "$SUBPROJECT" = "desktop-preinstalled" ]; then
-				add_package live language-pack-en-base
+				add_package live language-pack-en-base oem-config-slideshow-ubuntu
 			fi
 			;;
 		*)
@@ -597,6 +603,21 @@ case $PROJECT in
 				remove_packages_from_seed_regexp minimal.standard desktop-default-languages '^desktop-(?!default-languages|minimal|common)[^.]+$'
 				remove_packages_from_seed_regexp minimal.standard desktop-default-languages ''  # none (if no default langpack is selected)
 				;;
+
+			desktop-preinstalled)
+				add_task install minimal standard cloud-image
+				if [ "$SUBARCH" = "raspi" ]; then
+					add_task install desktop-raspi
+				fi
+				# XXX: Are those actually needed? I see we use those for ubuntu-cpc, which is the project
+				#  for existing raspi preinstalled images
+				OPTS="${OPTS:+$OPTS }--initramfs=none"
+				OPTS="${OPTS:+$OPTS }--system=normal"
+				OPTS="${OPTS:+$OPTS }--hdd-label=cloudimg-rootfs"
+				OPTS="${OPTS:+$OPTS }--ext-resize-blocks=536870912 --ext-block-size=4096"
+				OPTS="${OPTS:+$OPTS }--ext-fudge-factor=15"
+				;;
+
 			*)
 				LIVE_TASK='ubuntu-live'
 				add_task install minimal standard ubuntu-desktop

live-build/ubuntu/hooks/099-ubuntu-image-customization.chroot

@@ -0,0 +1,25 @@
+#!/bin/bash -ex
+
+. /root/config/chroot
+
+# Specific ubuntu-image chroot configuration goes here.
+if [ "$IMAGEFORMAT" == "none"]; then
+    if [ "$SUBPROJECT" == "desktop-preinstalled" ]; then
+        # Create files/dirs Ubiquity requires
+        mkdir -p /var/log/installer
+        touch /var/log/installer/debug
+        touch /var/log/syslog
+        chown syslog:adm /var/log/syslog
+
+        sed -i "s|#WaylandEnable=false|#WaylandEnable=false\nInitialSetupEnable=false|" "/etc/gdm3/custom.conf"
+
+        # Create the oem user account
+        /usr/sbin/useradd -d /home/oem -m -N -u 29999 oem
+
+        /usr/sbin/oem-config-prepare --quiet
+        touch "/var/lib/oem-config/run"
+
+        # Make the writable partition grow
+        echo "LABEL=writable    /     ext4    defaults,x-systemd.growfs    0 0" >>/etc/fstab
+    fi
+fi