vm/systemd: generate opts for GUI based on debug-mode (#567)

vm-systemd/qubes-sysinit.sh

@@ -61,3 +61,11 @@ if [ -n "$timezone" ]; then
     echo "# Clock configuration autogenerated based on Qubes dom0 settings" > /etc/sysconfig/clock
     echo "ZONE=\"$timezone\"" >> /etc/sysconfig/clock
 fi
+
+# Prepare environment for other services
+echo > /var/run/qubes-service-environment
+
+debug_mode=`$XS_READ qubes-debug-mode 2> /dev/null`
+if [ -n "$debug_mode" -a "$debug_mode" -gt 0 ]; then
+    echo "GUI_OPTS=-vv" >> /var/run/qubes-service-environment
+fi