feat(vdirsyncer): restart after failure

configs/khal.nix

@@ -17,6 +17,10 @@ in
       ${pkgs.vdirsyncer}/bin/vdirsyncer sync
       ${pkgs.khal}/bin/khal printcalendars # https://lostpackets.de/khal/configure.html#syncing
     '';
+    serviceConfig = {
+      Type = "oneshot";
+      Restart = "on-failure";
+    };
   };
 
   home-manager.users.me = {

configs/moodle-dl/meinhark.nix

@@ -53,6 +53,7 @@ in
         107369 # Tusculanae Disputationes
         108586 # Griechische Religion
         107988 # Balkanindogermanisch
+        108312 # Altnordisch
       ];
       download_submissions = true;
       download_descriptions = true;