[virtualbox] Move into proper module

nixos/modules/default.nix

@@ -4,5 +4,6 @@
   imports = [
     ./programs
     ./users
+    ./virtualisation
   ];
 }

nixos/modules/users/tdpeuter/default.nix

@@ -30,7 +30,6 @@ in {
         # If you specify an application here, it will be detected by the configuration module
         #  and the configuration files will be put in place for you.
         packages = with pkgs; [
-          brave
           duf
           jellyfin-media-player
           libreoffice-fresh

nixos/modules/virtualisation/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./virtualbox
+  ];
+}

nixos/modules/virtualisation/virtualbox/default.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.sisyphus.virtualisation.virtualbox;
+in {
+  options.sisyphus.virtualisation.virtualbox.enable = lib.mkEnableOption "VirtualBox";
+
+  config = lib.mkIf cfg.enable {
+    virtualisation.virtualbox = {
+      host = {
+        enable = true;
+        enableExtensionPack = true;
+      };
+      guest = {
+        enable = true;
+        x11 = true;
+      };
+    };
+    users.extraGroups.vboxusers.members = [
+      "user-with-access-to-virtualbox"
+    ];
+  };
+}