Revert "Revert "Disable nix autoUpgrade for regular machines""

This reverts commit 3aabae7e6f.

autoUpgrade gets weird when network issues are involved, especially
relevant for laptops...

Yes I know I'm indecisive

hosts/Legion/configuration.nix

@@ -4,7 +4,10 @@
 { lib, ... }: {
   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 = "02:00";
       upper = "05:00";

system/default.nix

@@ -1,6 +1,4 @@
-{ 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" ];
@@ -50,10 +48,4 @@ in {
       LC_TIME = locale;
     };
   };
-  system.autoUpgrade = {
-    enable = true;
-    dates = "02:00";
-    allowReboot = false;
-    flake = flakeURL;
-  };
 }