From 8b6a38ce7e648f6ce08e43926bf63e69efcdcb92 Mon Sep 17 00:00:00 2001
From: Herwig Hochleitner <herwig@bendlas.net>
Date: Sat, 23 Feb 2019 18:50:37 +0100
Subject: [PATCH] nixos/virtualbox: add warning when for ineffective nixpkgs
 config

nixpkgs.config.virtualbox.enableExtensionPack doesn't do anything, but
used to. Add a warning for the unsuspecting.
---
 nixos/modules/virtualisation/virtualbox-host.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nixos/modules/virtualisation/virtualbox-host.nix b/nixos/modules/virtualisation/virtualbox-host.nix
index 60779579402c..3523997ce84e 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 ];