split out module to work around badly named symbol in directory-1.2.6.2

Sadly my bug report about this is not going to get fixed it seems, so
I have to drag around a whole added module file just to deal with it.

https://github.com/haskell/directory/issues/52

2 files changed, 23 insertions, 2 deletions

diff --git a/Utility/Directory.hs b/Utility/Directory.hs
index fae33b5..693e771 100644
--- a/Utility/Directory.hs
+++ b/Utility/Directory.hs
@@ -8,10 +8,12 @@
 {-# LANGUAGE CPP #-}
 {-# OPTIONS_GHC -fno-warn-tabs #-}
 
-module Utility.Directory where
+module Utility.Directory (
+	module Utility.Directory,
+	module Utility.SystemDirectory
+) where
 
 import System.IO.Error
-import System.Directory
 import Control.Monad
 import System.FilePath
 import Control.Applicative
@@ -28,6 +30,7 @@ import Utility.SafeCommand
 import Control.Monad.IfElse
 #endif
 
+import Utility.SystemDirectory
 import Utility.PosixFiles
 import Utility.Tmp
 import Utility.Exception
@@ -134,11 +137,13 @@ moveFile src dest = tryIO (rename src dest) >>= onrename
 				_ <- tryIO $ removeFile tmp
 				throwM e'
 
+#ifndef mingw32_HOST_OS	
 	isdir f = do
 		r <- tryIO $ getFileStatus f
 		case r of
 			(Left _) -> return False
 			(Right s) -> return $ isDirectory s
+#endif
 
 {- Removes a file, which may or may not exist, and does not have to
  - be a regular file.
diff --git a/Utility/SystemDirectory.hs b/Utility/SystemDirectory.hs
new file mode 100644
index 0000000..3dd44d1
--- /dev/null
+++ b/Utility/SystemDirectory.hs
@@ -0,0 +1,16 @@
+{- System.Directory without its conflicting isSymbolicLink
+ -
+ - Copyright 2016 Joey Hess <id@joeyh.name>
+ -
+ - License: BSD-2-clause
+ -}
+
+-- Disable warnings because only some versions of System.Directory export
+-- isSymbolicLink.
+{-# OPTIONS_GHC -fno-warn-tabs -w #-}
+
+module Utility.SystemDirectory (
+	module System.Directory
+) where
+
+import System.Directory hiding (isSymbolicLink)