gnome: attempt to prevent device from sleeping

hosts/common/optional/gnome.nix

@@ -1,8 +1,11 @@
 {
-  services.xserver = {
+  services = {
+    xserver = {
       enable = true;
       displayManager = {
-      gdm.enable = true;
+        gdm = {
+          enable = true;
+          autoSuspend = false;
       };
       desktopManager = {
         gnome.enable = true;
@@ -10,4 +13,23 @@
       layout = "us";
       xkbVariant = "";
     };
+    logind.lidSwitch = "ignore";
+  };
+  security.polkit.extraConfig = ''
+    polkit.addRule(function(action, subject) {
+        if (action.id == "org.freedesktop.login1.suspend" ||
+            action.id == "org.freedesktop.login1.suspend-multiple-sessions" ||
+            action.id == "org.freedesktop.login1.hibernate" ||
+            action.id == "org.freedesktop.login1.hibernate-multiple-sessions")
+        {
+            return polkit.Result.NO;
+        }
+    });
+  '';
+  systemd.targets = {
+    sleep.enable = false;
+    suspend.enable = false;
+    hibernate.enable = false;
+    hybrid-sleep.enable = false;
+  };
 }