Call qubes.PostInstall service to notify dom0 about all apps/features

Update dom0 about all applications installed, not only desktop files for
them. Update also supported features and other things advertised
initially at template installation.

Fixes QubesOS/qubes-issues#3579

archlinux/PKGBUILD.qubes-update-desktop-icons.hook

@@ -6,6 +6,6 @@ Operation = Remove
 Target = usr/share/applications/*.desktop
 
 [Action]
-Description = Updating the Qubes desktop file App Icons...
+Description = Updating the Qubes desktop file App Icons and features...
 When = PostTransaction
-Exec = /usr/lib/qubes/qubes-trigger-sync-appmenus.sh
+Exec = /etc/qubes-rpc/qubes.PostInstall

debian/qubes-core-agent.postinst

@@ -181,8 +181,8 @@ case "${1}" in
 
         dconf update || true
 
-        # Update Qubes App Menus
-        /usr/lib/qubes/qubes-trigger-sync-appmenus.sh || true
+        # tell dom0 about installed updates (applications, features etc)
+        /etc/qubes-rpc/qubes.PostInstall || true
         ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)
@@ -194,8 +194,8 @@ case "${1}" in
             case "${trigger}" in
 
                 /usr/share/applications)
-                    debug "Updating Qubes App Menus..."
-                    /usr/lib/qubes/qubes-trigger-sync-appmenus.sh || true
+                    debug "Updating Qubes App Menus and advertising features..."
+                    /etc/qubes-rpc/qubes.PostInstall || true
                     ;;
 
                 # Install overridden serial.conf init script

misc/dnf-qubes-hooks.py

@@ -61,6 +61,5 @@ class QubesHooks(dnf.Plugin):
                 str(len(updates))
             ])
 
-        if config.getboolean('main', 'sync-appmenus'):
-            self.log.info("Sending application list and icons to dom0")
-            subprocess.call(['/usr/lib/qubes/qubes-trigger-sync-appmenus.sh'])
+        self.log.info("Notifying dom0 about installed applications")
+        subprocess.call(['/etc/qubes-rpc/qubes.PostInstall'])

post-install.d/README

@@ -1,3 +1,3 @@
 All executable files with `.sh` suffix in this directory will be executed as
-root just after template installation. Template VM may not have access to the
-network at this time yet.
+root just after template installation or update. Template VM may
+not have access to the network at this time yet.