From 580125f6fc88e39276688e035602cd3674f456a7 Mon Sep 17 00:00:00 2001
From: Piotr Bogdan <ppbogdan@gmail.com>
Date: Fri, 4 Jan 2019 19:33:50 +0000
Subject: [PATCH] box2d: don't build examples

They fail to build and aren't included in the output anyway.
---
 pkgs/development/libraries/box2d/default.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/box2d/default.nix b/pkgs/development/libraries/box2d/default.nix
index e65980be320e..a6ab33d20f77 100644
--- a/pkgs/development/libraries/box2d/default.nix
+++ b/pkgs/development/libraries/box2d/default.nix
@@ -17,7 +17,11 @@ stdenv.mkDerivation rec {
     unzip cmake libGLU_combined freeglut libX11 xproto inputproto libXi
   ];
 
-  cmakeFlags = [ "-DBOX2D_INSTALL=ON" "-DBOX2D_BUILD_SHARED=ON" ];
+  cmakeFlags = [
+    "-DBOX2D_INSTALL=ON"
+    "-DBOX2D_BUILD_SHARED=ON"
+    "-DBOX2D_BUILD_EXAMPLES=OFF"
+  ];
 
   prePatch = ''
     substituteInPlace Box2D/Common/b2Settings.h \