chore: run nix fmt

This reverts commit b23525df78.

installer/auto-install.nix

@@ -13,6 +13,7 @@
   ...
 }:
 {
+  # Ensure the entire system closure and all dependencies are included in the ISO
   environment.systemPackages = [
     pkgs.git
     pkgs.bashInteractive
@@ -20,6 +21,14 @@
     targetSystemBuild.toplevel
   ];
 
+  # Explicitly include the system closure in the ISO image to prevent any need to build or fetch
+  isoImage.contents = [
+    {
+      source = targetSystem;
+      target = "/system";
+    }
+  ];
+
   nixpkgs.hostPlatform = hostPlatform;
 
   nix.settings.experimental-features = "nix-command flakes";