From b6be650608084455c64111718de235efccec030c Mon Sep 17 00:00:00 2001
From: Alexander Ried <ried@mytum.de>
Date: Tue, 6 Sep 2016 21:08:42 +0200
Subject: [PATCH] gazebo.sdformat: fix cmake file

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

diff --git a/pkgs/development/libraries/sdformat/default.nix b/pkgs/development/libraries/sdformat/default.nix
index a81ba17a3f5b..692de29afd7a 100644
--- a/pkgs/development/libraries/sdformat/default.nix
+++ b/pkgs/development/libraries/sdformat/default.nix
@@ -16,6 +16,10 @@ stdenv.mkDerivation rec {
 
   inherit name;
 
+  prePatch = ''
+    substituteInPlace cmake/sdf_config.cmake.in --replace "@CMAKE_INSTALL_PREFIX@/@LIB_INSTALL_DIR@" "@LIB_INSTALL_DIR@"
+  '';
+
   enableParallelBuilding = true;
   buildInputs = [
     cmake boost ruby ignition.math2 tinyxml