feat(virtualbox): add kvm virtualbox host

global/virtualbox/default.nix

@@ -0,0 +1,34 @@
+{ pkgs
+, lib
+, config
+, ... }: with lib; let
+  cfg = config.global.virtualbox;
+in {
+  options.global.virtualbox = {
+    enable = mkEnableOption "virtualbox host (kvm)";
+  };
+
+  config = mkIf cfg.enable {
+    virtualisation.virtualbox.host = {
+      enable = true;
+      enableKvm = true;
+      enableExtensionPack = true;
+
+      enableHardening = false;
+      addNetworkInterface = false;
+    };
+
+    # allow virtualbox USB passthrough
+    users.adminGroups = [ "vboxusers" ];
+
+    users.home.persist.directories = [
+      ".config/VirtualBox"
+    ];
+
+    users.homeModules = [ {
+      wayland.windowManager.sway.config.window.commands = [
+        { criteria.class = "VirtualBox Manager"; command = "floating enable"; }
+      ];
+    } ];
+  };
+}