From 4cdefbb92631f03a46ff63c5a0dad164aee6d0ff Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 15 Oct 2013 00:18:17 +0200
Subject: [PATCH] haskell-errors: jailbreak to fix build with either 4.x

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

diff --git a/pkgs/development/libraries/haskell/errors/default.nix b/pkgs/development/libraries/haskell/errors/default.nix
index d15ac59febab..be061cfb4433 100644
--- a/pkgs/development/libraries/haskell/errors/default.nix
+++ b/pkgs/development/libraries/haskell/errors/default.nix
@@ -5,6 +5,7 @@ cabal.mkDerivation (self: {
   version = "1.4.2";
   sha256 = "1csry8bbz7r4gc7x3lf1ih10rvnig2i91nfij227p9744yndl2xw";
   buildDepends = [ either safe transformers ];
+  jailbreak = true;
   meta = {
     description = "Simplified error-handling";
     license = self.stdenv.lib.licenses.bsd3;