add autoUpgrade to sparky

hosts/sparky/default.nix

@@ -75,6 +75,16 @@ in {
   services.displayManager.defaultSession = "cinnamon";
   services.libinput.enable = true;
 
+  system.services.nixosAutoUpgrade = {
+    enable = true;
+    persistent = true;
+    reboot = false;
+    pushUpdates = false;
+    configDir = "/etc/nixos";
+    onCalendar = "*-*-* 07:00:00";
+    user = "media";
+  };
+
   services.xserver = {
     enable = true;
     videoDrivers = ["nvidia"];