From 0fbdf5aa4ed83723c140b156c3d9529f5163052d Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Sat, 1 Nov 2014 16:45:07 +0100
Subject: [PATCH] haskell-diagrams-contrib: jailbreak to fix build with latest
 version of 'lens'

---
 pkgs/development/libraries/haskell/diagrams/contrib.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/libraries/haskell/diagrams/contrib.nix b/pkgs/development/libraries/haskell/diagrams/contrib.nix
index 832617d64b7..e91ed955ca9 100644
--- a/pkgs/development/libraries/haskell/diagrams/contrib.nix
+++ b/pkgs/development/libraries/haskell/diagrams/contrib.nix
@@ -20,6 +20,7 @@ cabal.mkDerivation (self: {
     diagramsLib HUnit QuickCheck testFramework testFrameworkHunit
     testFrameworkQuickcheck2
   ];
+  jailbreak = true;
   meta = {
     homepage = "http://projects.haskell.org/diagrams/";
     description = "Collection of user contributions to diagrams EDSL";