From 344195b3e0244aa2aa1a249a2b033958613276c8 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Sat, 1 Nov 2014 16:49:41 +0100
Subject: [PATCH] haskell-graphviz: jailbreak to fix build with latest version
 of 'polyparse'

---
 pkgs/development/libraries/haskell/graphviz/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/haskell/graphviz/default.nix b/pkgs/development/libraries/haskell/graphviz/default.nix
index 47fc34c55ba8..1ceddff6abad 100644
--- a/pkgs/development/libraries/haskell/graphviz/default.nix
+++ b/pkgs/development/libraries/haskell/graphviz/default.nix
@@ -15,7 +15,7 @@ cabal.mkDerivation (self: {
     wlPprintText
   ];
   testDepends = [ fgl filepath QuickCheck text ];
-  doCheck = false;
+  jailbreak = true;
   meta = {
     homepage = "http://projects.haskell.org/graphviz/";
     description = "Bindings to Graphviz for graph visualisation";