From b93ac14bf60371e1e716c03dc7d202d33fd32422 Mon Sep 17 00:00:00 2001
From: Evgeny Egorochkin <phreedom@yandex.ru>
Date: Mon, 10 Jun 2013 23:34:06 +0300
Subject: [PATCH] Ruby 1.9 parallel build sometimes fails due to races.

---
 pkgs/development/interpreters/ruby/ruby-19.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/interpreters/ruby/ruby-19.nix b/pkgs/development/interpreters/ruby/ruby-19.nix
index b954d7e6bf0..6545ed720e6 100644
--- a/pkgs/development/interpreters/ruby/ruby-19.nix
+++ b/pkgs/development/interpreters/ruby/ruby-19.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     ++ (op gdbmSupport gdbm)
     ++ (op yamlSupport libyaml);
 
-  enableParallelBuilding = true;
+  enableParallelBuilding = false;
     
   configureFlags = ["--enable-shared" "--enable-pthread"];