Disable user config by default.

setup_system.sh

@@ -60,6 +60,7 @@ function get_packages() {
 
 function configure_sddm() {
     local sddm_config_dir="/etc/sddm.conf.d"
+    local theme_dir="/usr/share/sddm/themes/aerial"
 
     echo "Setting up '$sddm_config_dir'."
 
@@ -77,6 +78,9 @@ function configure_sddm() {
         echo "[X11]"
         echo "DisplayCommand=/usr/share/sddm/scripts/Xsetup"
     } | sudo tee "$sddm_config_dir/xsetup" >/dev/null
+
+    echo "Setting up '$theme_dir'."
+    mv "$theme_dir/theme.conf.user" "$theme_dir/theme.conf.user.disabled"
 }
 
 function prepare_arch() {