nixpkgs-update: switch to hourly backups

hosts/build02/nixpkgs-update-backup.nix

@@ -11,7 +11,7 @@
       name = "nixpkgs-update";
       after = [ config.systemd.services.nixpkgs-update-delete-old-logs.name ];
       paths = [ "/var/log/nixpkgs-update" ];
-      startAt = "daily";
+      startAt = "hourly";
     }
   ];
 }

modules/nixos/monitoring/alert-rules.nix

@@ -5,7 +5,6 @@
       (lib.genAttrs
         [
           "borgbackup-job-github-org.service"
-          "borgbackup-job-nixpkgs-update.service"
         ]
         (name: {
           expr = ''absent_over_time(task_last_run{name="${name}"}[1d])'';
@@ -14,6 +13,7 @@
       )
       // (lib.genAttrs
         [
+          "borgbackup-job-nixpkgs-update.service"
         ]
         (name: {
           expr = ''absent_over_time(task_last_run{name="${name}"}[1h])'';