diff --git a/rootfs-nixos/configuration.nix b/rootfs-nixos/configuration.nix
index 1bf2b2d..bd5e98e 100644
--- a/rootfs-nixos/configuration.nix
+++ b/rootfs-nixos/configuration.nix
@@ -9,10 +9,27 @@
 #
 { config, pkgs, lib, wayland-proxy-virtwl, ... }:
 
-{
-  #############################################################################
-  # Boot Configuration - Systemd Stage 1
-  #############################################################################
+let
+  cfg = config._qubesLite;
+in {
+  options._qubesLite = {
+    disposable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Whether this VM should auto-shutdown when idle.";
+    };
+
+    idleTimeout = lib.mkOption {
+      type = lib.types.int;
+      default = 60;
+      description = "Seconds to wait after last command before shutdown.";
+    };
+  };
+
+  config = {
+    #############################################################################
+    # Boot Configuration - Systemd Stage 1
+    #############################################################################
 
   boot.initrd.systemd.enable = true;
 
@@ -361,6 +378,7 @@
   # Disable services we don't need
   services.timesyncd.enable = false;
 
-  # System version
-  system.stateVersion = "25.11";
+    # System version
+    system.stateVersion = "25.11";
+  };
 }