add suggested changes via NixOS discord

configuration.nix

@@ -1,16 +1,9 @@
 { lib, config, pkgs, ... }:
 
-let
-  hostname = "virtbox";
-  isVirtbox = hostname == "virtbox";
-  isNetbox = hostname == "netbox";
-in
 {
   imports =
     [
       ./hardware-configuration.nix # include the results of the hardware scan
-      ./virtbox.nix
-      ./netbox.nix
     ];
 
   networking.networkmanager.enable = true;
@@ -35,13 +28,4 @@ in
 
   system.copySystemConfiguration = true;
   system.stateVersion = "23.05"; # don't change this, lol
-
-  # branch and enable different capabilities based on the system
-  test = lib.mkIf isVirtbox {
-    services.virtbox.enable = true;
-  };
-
-  test_ = lib.mkIf isNetbox {
-    services.netbox.enable = true;
-  };
 }

netbox.nix

@@ -1,18 +1,12 @@
 { lib, config, pkgs, ... }:
 
-let
+{
-  cfg = config.services.netbox;
-in {
-  options.serviecs.netbox = {
-    enable = lib.mkEnableOption "netbox configs";
-  };
-
   imports =
     [
       ./mail.nix
+      ./configuration.nix
     ];
 
-  config = lib.mkIf cfg.enable {
   boot.loader.grub.enable = true;
   boot.loader.grub.device = "/dev/vda";
 
@@ -130,5 +124,4 @@ in {
   # Open ports in the firewall.
   networking.firewall.enable = false;
   networking.firewall.allowedTCPPorts = [ 55555 80 443 ];
-  };
 }

virtbox.nix

@@ -1,21 +1,16 @@
 { lib, config, pkgs, ...}:
 
 let
-  cfg = config.services.virtbox;
   home-manager = builtins.fetchTarball {
     url = "https://github.com/nix-community/home-manager/archive/release-23.05.tar.gz";
     sha256 = "0dfshsgj93ikfkcihf4c5z876h4dwjds998kvgv7sqbfv0z6a4bc";
   };
 in {
-  options.services.virtbox = {
-    enable = lib.mkEnableOption "virtbox configs";
-  };
-
   imports = [
     (import "${home-manager}/nixos")
+    ./configuration.nix
   ];
 
-  config = lib.mkIf cfg.enable {
   boot.loader.grub.enable = true;
   boot.loader.grub.device = "/dev/vda";
 
@@ -112,5 +107,4 @@ in {
       };
     };
   };
-  };
 }