From 84fba566f148543f06255e447225fae554b6a2c2 Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Mon, 24 Mar 2014 09:48:23 -0400
Subject: [PATCH] quickcheck-instances: jailbreak to work with newer QuickCheck

---
 .../libraries/haskell/quickcheck-instances/default.nix        | 1 +
 pkgs/top-level/haskell-packages.nix                           | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/haskell/quickcheck-instances/default.nix b/pkgs/development/libraries/haskell/quickcheck-instances/default.nix
index 3260fd17e9e5..d532a83015ca 100644
--- a/pkgs/development/libraries/haskell/quickcheck-instances/default.nix
+++ b/pkgs/development/libraries/haskell/quickcheck-instances/default.nix
@@ -14,4 +14,5 @@ cabal.mkDerivation (self: {
     platforms = self.ghc.meta.platforms;
     maintainers = [ self.stdenv.lib.maintainers.ocharles ];
   };
+  jailbreak = true;
 })
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 5b39974c3158..4888d51b3b74 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -2065,7 +2065,9 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   quickcheckAssertions = callPackage ../development/libraries/haskell/quickcheck-assertions {};
 
-  quickcheckInstances = callPackage ../development/libraries/haskell/quickcheck-instances {};
+  quickcheckInstances = callPackage ../development/libraries/haskell/quickcheck-instances {
+    QuickCheck = self.QuickCheck_2_7_1;
+  };
 
   quickcheckIo = callPackage ../development/libraries/haskell/quickcheck-io {};