From e048994d58b0c1bb3387ea938958c7439786bedd Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Thu, 15 May 2014 19:39:56 +0200
Subject: [PATCH] haskell-defaults.nix: stick to transformers 0.3.x

---
 pkgs/top-level/haskell-defaults.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/top-level/haskell-defaults.nix b/pkgs/top-level/haskell-defaults.nix
index 72a328ad69e3..65cd02e132bd 100644
--- a/pkgs/top-level/haskell-defaults.nix
+++ b/pkgs/top-level/haskell-defaults.nix
@@ -36,9 +36,8 @@
     };
     gloss = null;                       # requires base >= 4.7
     haddock = self.haddock_2_13_2;
-    mtl = self.mtl_2_2_0_1;
     pipesBinary = super.pipesBinary.override { binary = self.binary_0_7_2_0; };
-    transformers = self.transformers_0_4_1_0;
+    transformers = self.transformers_0_3_0_0; # core packagen in ghc > 7.6.x
   };
 
   ghc742Prefs = self : super : ghc763Prefs self super // {