From 72f8f89849ebe341c697486f63df7fbac35f6b5c Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Tue, 5 Feb 2019 19:27:39 -0500
Subject: [PATCH] libvdpau: add -lX11 on darwin

Seems to be necessary for some reason. Otherwise we are missing
symbols.
---
 pkgs/development/libraries/libvdpau/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/libraries/libvdpau/default.nix b/pkgs/development/libraries/libvdpau/default.nix
index dd3703e6aeb..52359a3a4cd 100644
--- a/pkgs/development/libraries/libvdpau/default.nix
+++ b/pkgs/development/libraries/libvdpau/default.nix
@@ -19,6 +19,8 @@ stdenv.mkDerivation rec {
   configureFlags = stdenv.lib.optional stdenv.isLinux
     "--with-module-dir=${libGL_driver.driverLink}/lib/vdpau";
 
+  NIX_LDFLAGS = if stdenv.isDarwin then "-lX11" else null;
+
   installFlags = [ "moduledir=$(out)/lib/vdpau" ];
 
   meta = with stdenv.lib; {