Modularization of config

flake.nix

@@ -12,12 +12,19 @@
   };
 
   outputs = { self, nixpkgs, ... }@inputs: {
-    nixosConfigurations.default = nixpkgs.lib.nixosSystem {
+    nixosConfigurations = {
+    
+      # Test host in VirtualBox
+      vbox-test = nixpkgs.lib.nixosSystem {
         specialArgs = {inherit inputs;};
         modules = [
-        ./configuration.nix
+          ./hosts/vbox-test/configuration.nix
           inputs.home-manager.nixosModules.default
         ];
       };
+
+     # Other hosts
+
+    };
   };
 }