--- a/meson_options.txt	2026-03-23 15:15:00.981473393 +0100
+++ b/meson_options.txt	2026-03-23 15:16:08.275335877 +0100
@@ -12,6 +12,7 @@
     type : 'array',
     choices : ['alpm',
                'apt',
+               'cards',
                'dnf',
                'dnf5',
                'dummy',
--- a/etc/PackageKit.conf	2026-03-23 15:15:00.974701909 +0100
+++ b/etc/PackageKit.conf	2026-03-23 15:16:51.165739732 +0100
@@ -9,10 +9,10 @@
 # The order they are specified is the order they are tried, so for the
 # value "foo,bar" first "foo" will be attempted and then "bar" if the
 # libpk_backend_foo.so module load failed.
-#DefaultBackend=auto
+DefaultBackend=cards
 
 # Unlock the backend after this many seconds idle.
-#BackendShutdownTimeout=5
+BackendShutdownTimeout=5
 
 # Shut down the daemon after this many seconds idle. 0 means don't shutdown.
 #ShutdownTimeout=300