From 6498f489766c216da1d3bc10ce733d506bb73160 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 7 Feb 2014 09:49:48 +0100
Subject: [PATCH] haskell-linear: this package requires lens 4.x to compile

---
 pkgs/top-level/haskell-packages.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 1a404240d48f..766a8d7d3094 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1560,7 +1560,9 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   liftedBase = callPackage ../development/libraries/haskell/lifted-base {};
 
-  linear = callPackage ../development/libraries/haskell/linear {};
+  linear = callPackage ../development/libraries/haskell/linear {
+    lens = self.lens_4_0_1;
+  };
 
   List = callPackage ../development/libraries/haskell/List {};