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-rw-r--r--nixos/modules/virtualisation/virtualbox-host.nix2
1 files changed, 2 insertions, 0 deletions
diff --git a/nixos/modules/virtualisation/virtualbox-host.nix b/nixos/modules/virtualisation/virtualbox-host.nix
index 60779579402..3523997ce84 100644
--- a/nixos/modules/virtualisation/virtualbox-host.nix
+++ b/nixos/modules/virtualisation/virtualbox-host.nix
@@ -83,6 +83,8 @@ in
   };
 
   config = mkIf cfg.enable (mkMerge [{
+    warnings = mkIf (config.nixpkgs.config.virtualbox.enableExtensionPack or false)
+      "'nixpkgs.virtualbox.enableExtensionPack' has no effect, please use 'virtualisation.virtualbox.host.enableExtensionPack'";
     boot.kernelModules = [ "vboxdrv" "vboxnetadp" "vboxnetflt" ];
     boot.extraModulePackages = [ kernelModules ];
     environment.systemPackages = [ virtualbox ];