Ship static files instead of generating in a hook

When the files we're creating in the live layer have static content, ship
them in live-build/ubuntu/includes.chroot.minimal.standard.live instead of
generating them from live-build/ubuntu/hooks/020-ubuntu-live.chroot_early.

Also fixes the fact that
live-build/ubuntu/hooks/020-ubuntu-live.chroot_early was incorrectly writing
to /root in the previous upload instead of /usr.

debian/changelog

@@ -1,3 +1,14 @@
+livecd-rootfs (24.04.14) UNRELEASED; urgency=medium
+
+  * When the files we're creating in the live layer have static content,
+    ship them in live-build/ubuntu/includes.chroot.minimal.standard.live
+    instead of generating them from
+    live-build/ubuntu/hooks/020-ubuntu-live.chroot_early.  Also fixes the
+    fact that live-build/ubuntu/hooks/020-ubuntu-live.chroot_early was
+    incorrectly writing to /root in the previous upload instead of /usr.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Wed, 20 Dec 2023 11:26:08 -0800
+
 livecd-rootfs (24.04.13) noble; urgency=medium
 
   * Drop support for building armhf+raspi images; as of noble these are

live-build/ubuntu/hooks/020-ubuntu-live.chroot_early

@@ -10,44 +10,8 @@ case ${PASS:-} in
         ;;
 esac
 
-cat <<EOF > /etc/initramfs-tools/conf.d/casperize.conf
-export CASPER_GENERATE_UUID=1
-EOF
-
 cat <<EOF > /etc/initramfs-tools/conf.d/default-layer.conf
 LAYERFS_PATH=${PASS}.squashfs
 EOF
 
-# change settings to have an 'installer only' session by default
-printf "[org.gnome.desktop.a11y]\nalways-show-universal-access-status=true\n" \
-	>> /usr/share/glib-2.0/schemas/casper.gschema.override
-# we can't unload the dock because the shell would enter the overview on login;
-# https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1788
-printf "[org.gnome.shell.extensions.dash-to-dock:ubuntu]\ndock-fixed=false\nintellihide=false\n" \
-	>> /root/usr/share/glib-2.0/schemas/casper.gschema.override
-printf "[org.gnome.shell]\ndisabled-extensions=['ding@rastersoft.com']\n" \
-	>> /root/usr/share/glib-2.0/schemas/casper.gschema.override
-
 glib-compile-schemas /usr/share/glib-2.0/schemas/
-# start the installer on session start, restore normal session on close
-
-cat > /usr/lib/systemd/user/ubuntu-desktop-installer.service << EOF
-
-[Unit]
-Description=Ubuntu Desktop Installer
-PartOf=graphical-session.target
-After=graphical-session.target
-
-# Never run in GDM
-Conflicts=gnome-session@gnome-login.target
-
-[Service]
-Type=oneshot
-ExecStart=/snap/bin/ubuntu-desktop-installer --try-or-install
-ExecStopPost=sh -c "gsettings set org.gnome.shell.extensions.dash-to-dock dock-fixed true; gsettings set org.gnome.shell.extensions.dash-to-dock intellihide true; gnome-extensions enable ding@rastersoft.com"
-Restart=no
-EOF
-
-mkdir /etc/systemd/user/graphical-session.target.wants/
-ln -s /usr/lib/systemd/user/ubuntu-desktop-installer.service \
-	/etc/systemd/user/graphical-session.target.wants/

live-build/ubuntu/includes.chroot.minimal.standard.live/etc/initramfs-tools/conf.d/casperize.conf

@@ -0,0 +1 @@
+export CASPER_GENERATE_UUID=1

live-build/ubuntu/includes.chroot.minimal.standard.live/etc/systemd/user/graphical-session.target.wants/ubuntu-desktop-installer.service

@@ -0,0 +1 @@
+/usr/lib/systemd/user/ubuntu-desktop-installer.service

live-build/ubuntu/includes.chroot.minimal.standard.live/usr/lib/systemd/user/ubuntu-desktop-installer.service

@@ -0,0 +1,15 @@
+# start the installer on session start, restore normal session on close
+
+[Unit]
+Description=Ubuntu Desktop Installer
+PartOf=graphical-session.target
+After=graphical-session.target
+
+# Never run in GDM
+Conflicts=gnome-session@gnome-login.target
+
+[Service]
+Type=oneshot
+ExecStart=/snap/bin/ubuntu-desktop-installer --try-or-install
+ExecStopPost=sh -c "gsettings set org.gnome.shell.extensions.dash-to-dock dock-fixed true; gsettings set org.gnome.shell.extensions.dash-to-dock intellihide true; gnome-extensions enable ding@rastersoft.com"
+Restart=no

live-build/ubuntu/includes.chroot.minimal.standard.live/usr/share/glib-2.0/schemas/casper.gschema.override

@@ -0,0 +1,12 @@
+# change settings to have an 'installer only' session by default
+[org.gnome.desktop.a11y]
+always-show-universal-access-status=true
+
+# we can't unload the dock because the shell would enter the overview on login;
+# https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1788
+[org.gnome.shell.extensions.dash-to-dock:ubuntu]
+dock-fixed=false
+intellihide=false
+
+[org.gnome.shell]
+disabled-extensions=['ding@rastersoft.com']