From c9a832de0f92f988d05b1220bea3eb1ea9d060ab Mon Sep 17 00:00:00 2001
From: Nikolay Yakimov <root@livid.pp.ru>
Date: Sat, 9 Jan 2016 17:43:51 +0300
Subject: [PATCH] NFData fix for ClockTime on GHC 7.4

---
 System/Directory/ModTime.hs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/System/Directory/ModTime.hs b/System/Directory/ModTime.hs
index 563a366..0e38eae 100644
--- a/System/Directory/ModTime.hs
+++ b/System/Directory/ModTime.hs
@@ -42,7 +42,7 @@ instance Binary ModTime where
 #else
 
 newtype ModTime = ModTime ClockTime
-    deriving (Eq, Ord, NFData)
+    deriving (Eq, Ord)
 getCurrentModTime = ModTime <$> getClockTime
 
 instance Binary ModTime where
@@ -51,6 +51,10 @@ instance Binary ModTime where
     get =
         ModTime <$> (TOD <$> get <*> get)
 
+instance NFData ModTime where
+    rnf (ModTime (TOD s ps)) =
+        s `seq` ps `seq` (ModTime $! TOD s ps) `seq` ()
+
 #endif
 
 getCurrentModTime :: IO ModTime