From 9cf445405bc1be72109946d231c09047c338d149 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Sun, 7 Feb 2016 14:23:24 +0100
Subject: [PATCH] libvdpau: break evaluation cycle on darwin

That path isn't meaningful on non-NixOS anyway.
---
 pkgs/development/libraries/libvdpau/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/libvdpau/default.nix b/pkgs/development/libraries/libvdpau/default.nix
index 107c8448795..446f2917fe7 100644
--- a/pkgs/development/libraries/libvdpau/default.nix
+++ b/pkgs/development/libraries/libvdpau/default.nix
@@ -12,7 +12,8 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ xorg.libX11 ];
 
-  configureFlags = [ "--with-module-dir=${mesa_noglu.driverLink}/lib/vdpau" ];
+  configureFlags = stdenv.lib.optional stdenv.isLinux
+    "--with-module-dir=${mesa_noglu.driverLink}/lib/vdpau";
 
   installFlags = [ "moduledir=$(out)/lib/vdpau" ];