From e8dc6258a1b5b11846fecf4a00c56a308dd22527 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Thu, 26 Jun 2014 22:01:21 +0200
Subject: [PATCH] qt4: try enableParallelBuilding again

I found no problems when running the build by itself on an 8-core.
---
 pkgs/development/libraries/qt-4.x/4.8/default.nix | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/qt-4.x/4.8/default.nix b/pkgs/development/libraries/qt-4.x/4.8/default.nix
index 1679b4953e7..0d6716243b8 100644
--- a/pkgs/development/libraries/qt-4.x/4.8/default.nix
+++ b/pkgs/development/libraries/qt-4.x/4.8/default.nix
@@ -121,9 +121,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ perl pkgconfig which ];
 
-  # occasional build problems if one has too many cores (like on Hydra)
-  # @vcunat has been unable to find a *reliable* fix
-  enableParallelBuilding = false;
+  enableParallelBuilding = true;
 
   NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin
     "-I${glib}/include/glib-2.0 -I${glib}/lib/glib-2.0/include";