From 6448c94e5789a108dc9e9c5f6e5d67669dcf27c3 Mon Sep 17 00:00:00 2001
From: Joachim Fasting <joachifm@fastmail.fm>
Date: Sat, 26 Mar 2016 14:56:06 +0100
Subject: [PATCH] leocad: work around cmath problem

introduced by recent glibc

https://hydra.nixos.org/build/33610365/nixlog/1/raw
---
 pkgs/applications/graphics/leocad/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/graphics/leocad/default.nix b/pkgs/applications/graphics/leocad/default.nix
index eaaf047c9bb..9ca9c592102 100644
--- a/pkgs/applications/graphics/leocad/default.nix
+++ b/pkgs/applications/graphics/leocad/default.nix
@@ -16,8 +16,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ qt4 zlib ];
 
-  prefixKey="INSTALL_PREFIX=";
+  prefixKey = "INSTALL_PREFIX=";
   configureScript = "qmake leocad.pro";
+  postPatch = ''
+    substituteInPlace common/camera.cpp --replace "isnan(" "std::isnan("
+  '';
 
   meta = with stdenv.lib; {
     description = "CAD program for creating virtual LEGO models";