Fix build with ghc-7.6

src/HPath.hs

@@ -13,7 +13,9 @@
 {-# LANGUAGE CPP #-}
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE EmptyDataDecls #-}
+#if __GLASGOW_HASKELL__ >= 708
 {-# LANGUAGE PatternSynonyms #-}
+#endif
 
 module HPath
   (
@@ -25,8 +27,10 @@ module HPath
   ,PathParseException
   ,PathException
   ,RelC
+#if __GLASGOW_HASKELL__ >= 708
   -- * PatternSynonyms/ViewPatterns
   ,pattern Path
+#endif
    -- * Path Parsing
   ,parseAbs
   ,parseFn
@@ -101,7 +105,9 @@ instance RelC Fn
 #if __GLASGOW_HASKELL__ >= 710
 pattern Path :: ByteString -> Path a
 #endif
+#if __GLASGOW_HASKELL__ >= 708
 pattern Path x <- (MkPath x)
+#endif
 
 --------------------------------------------------------------------------------
 -- Path Parsers

src/HPath/IO.hs

@@ -33,6 +33,7 @@
 -- For other functions (like `copyFile`), the behavior on these file types is
 -- unreliable/unsafe. Check the documentation of those functions for details.
 
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE PackageImports #-}
 {-# LANGUAGE OverloadedStrings #-}
 
@@ -107,7 +108,11 @@ import Data.ByteString
   (
     ByteString
   )
+#if MIN_VERSION_bytestring(0,10,2)
 import Data.ByteString.Builder
+#else
+import Data.ByteString.Lazy.Builder
+#endif
   (
     Builder
   , byteString