Disable nix autoUpgrade for regular machines

Only keep enabled for server where it makes sense

hosts/Legion/configuration.nix

@@ -1,7 +1,7 @@
 # Edit this configuration file to define what should be installed on
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running `nixos-help`).
-{ lib, ... }:
+{ ... }:
 let
   # generate via openvpn --genkey --secret openvpn-laptop.key
   client-key = "/root/openvpn.key";
@@ -11,9 +11,12 @@ let
 in {
   users.mutableUsers = false;
   system.autoUpgrade = {
-    allowReboot = lib.mkForce true;
+    enable = true;
+    flake = "git+https://git.xenia.me.uk/xenia/nixos.git?ref=main";
+    dates = "02:30";
+    allowReboot = true;
     rebootWindow = {
-      lower = "03:00";
+      lower = "02:00";
       upper = "05:00";
     };
   };

system/default.nix

@@ -1,6 +1,4 @@
-{ config, lib, pkgs, ... }:
-let flakeURL = "git+https://git.xenia.me.uk/xenia/nixos.git?ref=main";
-in {
+{ pkgs, ... }: {
   networking = {
     networkmanager.enable = true;
     nameservers = [ "9.9.9.9" ];
@@ -40,10 +38,4 @@ in {
       LC_TIME = locale;
     };
   };
-  system.autoUpgrade = {
-    enable = true;
-    dates = "02:00";
-    allowReboot = false;
-    flake = flakeURL;
-  };
 }