tests(packer): simplify pkg install script.

tests/packer/init.sh

@@ -3,16 +3,11 @@
 # Copyright (C) 2023-2024 Alexandre Pujol <alexandre@pujol.io>
 # SPDX-License-Identifier: GPL-2.0-only
 
-set -eux
+set -eux -o pipefail
 
-_lsb_release() {
 # shellcheck source=/dev/null
-	. /etc/os-release
-	echo "$ID"
-}
-DISTRIBUTION="$(_lsb_release)"
+source /etc/os-release || exit 1
 readonly SRC=/tmp/
-readonly DISTRIBUTION
 
 main() {
 	install -dm0750 -o "$SUDO_USER" -g "$SUDO_USER" "/home/$SUDO_USER/Projects/" "/home/$SUDO_USER/Projects/apparmor.d" "/home/$SUDO_USER/.config/"
@@ -24,7 +19,7 @@ main() {
 	install -Dm0755 $SRC/aa-clean /usr/bin/aa-clean
 	chown -R "$SUDO_USER:$SUDO_USER" "/home/$SUDO_USER/.config/"
 
-	case "$DISTRIBUTION" in
+	case "$ID" in
 	arch)
 		rm -f $SRC/*.sig # Ignore signature files
 		rm -f $SRC/*enforced* # Ignore enforced package
@@ -32,8 +27,10 @@ main() {
 		;;
 
 	debian | ubuntu)
-		apt-get install -y apparmor-profiles
+		# Do not install apparmor.d on the current development version
+		if [[ $VERSION_ID != "25.10" ]]; then
 			dpkg -i $SRC/*.deb || true
+		fi
 		;;
 
 	opensuse*)