From 72a4c7aa8830aa853dd7b1133a5db864c108852e Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 29 May 2012 21:25:45 +0000
Subject: [PATCH] haskell-Shellac-haskeline: patched to support current mtl and
 transformers

svn path=/nixpkgs/trunk/; revision=34286
---
 .../libraries/haskell/Shellac/Shellac-haskeline.nix            | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/libraries/haskell/Shellac/Shellac-haskeline.nix b/pkgs/development/libraries/haskell/Shellac/Shellac-haskeline.nix
index 4ce09964cc6..9f75a09ee69 100644
--- a/pkgs/development/libraries/haskell/Shellac/Shellac-haskeline.nix
+++ b/pkgs/development/libraries/haskell/Shellac/Shellac-haskeline.nix
@@ -5,6 +5,9 @@ cabal.mkDerivation (self: {
   version = "0.2.0.1";
   sha256 = "1xvs2ni83yyf7rx3ikmn2bkx20fyj03d03crqyyfw28mikhgv5br";
   buildDepends = [ haskeline mtl Shellac ];
+  patchPhase = ''
+    sed -i -e 's|mtl>=1.1 && < 2.1|mtl|' Shellac-haskeline.cabal
+  '';
   meta = {
     description = "Haskeline backend module for Shellac";
     license = self.stdenv.lib.licenses.bsd3;