From 37b25a712eb3138e18106d7386a179c09f6f72cd Mon Sep 17 00:00:00 2001
From: Sander van der Burg <svanderburg@gmail.com>
Date: Tue, 18 Jun 2013 12:24:40 +0200
Subject: [PATCH] Fix graphviz building on darwin

---
 pkgs/tools/graphics/graphviz/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/graphics/graphviz/default.nix b/pkgs/tools/graphics/graphviz/default.nix
index 370ce4fc1a1..c1aebd3dfe1 100644
--- a/pkgs/tools/graphics/graphviz/default.nix
+++ b/pkgs/tools/graphics/graphviz/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchurl, pkgconfig, libpng, libjpeg, expat, libXaw
-, yacc, libtool, fontconfig, pango, gd, xlibs, gts, gettext
+, yacc, libtool, fontconfig, pango, gd, xlibs, gts, gettext, cairo
 }:
 
 stdenv.mkDerivation rec {
@@ -18,6 +18,8 @@ stdenv.mkDerivation rec {
 
   patches = [ ./fix-broken-memcp-signature.patch ];
 
+  CPPFLAGS = stdenv.lib.optionalString (stdenv.system == "x86_64-darwin") "-I${cairo}/include/cairo";
+
   configureFlags =
     [ "--with-pngincludedir=${libpng}/include"
       "--with-pnglibdir=${libpng}/lib"