From a732b1413faf62d3137f10807d670a2c3becb771 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Tue, 18 Aug 2015 10:35:38 +0200
Subject: [PATCH] ghostcript: work around a parallel check problem

http://hydra.nixos.org/build/24811657
Hopefully OK now - I couldn't reproduce it with 4 cores and HT.
---
 pkgs/misc/ghostscript/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/misc/ghostscript/default.nix b/pkgs/misc/ghostscript/default.nix
index c5fb141b7e8..4d9d9cedde5 100644
--- a/pkgs/misc/ghostscript/default.nix
+++ b/pkgs/misc/ghostscript/default.nix
@@ -77,6 +77,8 @@ stdenv.mkDerivation rec {
     ];
 
   doCheck = true;
+  preCheck = "mkdir ./obj";
+  # parallel check sometimes gave: Fatal error: can't create ./obj/whitelst.o
 
   # don't build/install statically linked bin/gs
   buildFlags = "so";