From 853d612c3f392c0e58b31a6a4ff855369abe305e Mon Sep 17 00:00:00 2001
From: Ambroz Bizjak <ambrop7@gmail.com>
Date: Wed, 16 Mar 2016 12:37:35 +0100
Subject: [PATCH] opencsg: Fix build related to missing libX11 linking the
 example.

---
 pkgs/development/libraries/opencsg/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/opencsg/default.nix b/pkgs/development/libraries/opencsg/default.nix
index 89176c10843e..7f9c3803896b 100644
--- a/pkgs/development/libraries/opencsg/default.nix
+++ b/pkgs/development/libraries/opencsg/default.nix
@@ -13,6 +13,10 @@ stdenv.mkDerivation rec {
 
   doCheck = false;
 
+  preConfigure = ''
+    sed -i 's/^\(LIBS *=.*\)$/\1 -lX11/' example/Makefile
+  '';
+
   installPhase = ''
     mkdir -pv "$out/"{bin,share/doc/opencsg}