Stop anacron from starting in Debian using existing constraint on cron

Makefile

@@ -77,6 +77,9 @@ ifeq ($(shell lsb_release -is), Debian)
 
     # handled by qubes-iptables service now
     SYSTEM_DROPINS += netfilter-persistent.service
+
+    SYSTEM_DROPINS += anacron.service
+    SYSTEM_DROPINS += anacron-resume.service
 endif
 
 install-systemd-dropins:

patches.debian/01_add_anacron.patch

@@ -0,0 +1,8 @@
+Index: core-agent-linux/misc/30_cron.conf
+===================================================================
+--- core-agent-linux.orig/misc/30_cron.conf    2017-01-06 22:47:57.855061937 +0000
++++ core-agent-linux/misc/30_cron.conf 2017-01-07 01:31:16.382061937 +0000
+@@ -1 +1,2 @@
+ binds+=( '/var/spool/cron' )
++binds+=( '/var/spool/anacron' )
+

series-debian-vm.conf

@@ -1 +1 @@
-patches.debian/qrexec_disable_all_warnings_as_errors.patch
+patches.debian/01_add_anacron.patch

vm-systemd/anacron-resume.service.d/30_qubes.conf

@@ -0,0 +1,3 @@
+[Unit]
+ConditionPathExists=/var/run/qubes-service/crond
+

vm-systemd/anacron.service.d/30_qubes.conf

@@ -0,0 +1,3 @@
+[Unit]
+ConditionPathExists=/var/run/qubes-service/crond
+