From a08d440642c216a5a3214d33f274b05693a247d9 Mon Sep 17 00:00:00 2001
From: Simon Marlow <marlowsd@gmail.com>
Date: Wed, 17 Dec 2008 10:46:37 +0000
Subject: [PATCH] warning fix: don't use -XPatternSignatures in GHC >= 6.10

---
 base.cabal |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/base.cabal b/base.cabal
index 5c4ca8c..75581aa 100644
--- a/base.cabal
+++ b/base.cabal
@@ -61,8 +61,12 @@ Library {
                     ScopedTypeVariables, UnboxedTuples,
                     ForeignFunctionInterface, UnliftedFFITypes,
                     DeriveDataTypeable, GeneralizedNewtypeDeriving,
-                    FlexibleInstances, PatternSignatures, StandaloneDeriving,
+                    FlexibleInstances, StandaloneDeriving,
                     PatternGuards, EmptyDataDecls
+
+        if impl(ghc < 6.10) 
+           -- PatternSignatures was deprecated in 6.10
+           extensions: PatternSignatures
     }
     exposed-modules:
         Control.Applicative,
-- 
1.7.10.4