From 99ef7ea249468af6bf02a21c82e9eaf428c77395 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 31 Oct 2014 14:12:59 +0100
Subject: [PATCH] haskell-diagrams-lib: jailbreak to fix build with recent
 versions of 'lens'

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

diff --git a/pkgs/development/libraries/haskell/diagrams/lib.nix b/pkgs/development/libraries/haskell/diagrams/lib.nix
index 523911c2ea4b..5f2d6a90682a 100644
--- a/pkgs/development/libraries/haskell/diagrams/lib.nix
+++ b/pkgs/development/libraries/haskell/diagrams/lib.nix
@@ -16,6 +16,7 @@ cabal.mkDerivation (self: {
     monoidExtras optparseApplicative semigroups tagged vectorSpace
     vectorSpacePoints
   ];
+  jailbreak = true;
   meta = {
     homepage = "http://projects.haskell.org/diagrams";
     description = "Embedded domain-specific language for declarative graphics";