Added compatability layer to support directory-1.1

pandoc.cabal

@@ -235,7 +235,8 @@ Library
                  hslua >= 0.3 && < 0.4,
                  binary >= 0.5 && < 0.8,
                  SHA >= 1.6 && < 1.7,
-                 haddock-library >= 1.1 && < 1.2
+                 haddock-library >= 1.1 && < 1.2,
+                 old-time
   if flag(https)
      Build-Depends: http-client >= 0.3.2 && < 0.4,
                     http-client-tls >= 0.2 && < 0.3,
@@ -319,6 +320,7 @@ Library
                    Text.Pandoc.Compat.Monoid,
                    Text.Pandoc.Compat.Except,
                    Text.Pandoc.Compat.TagSoupEntity,
+                   Text.Pandoc.Compat.Directory
                    Paths_pandoc
 
   Buildable:       True

src/Text/Pandoc/Compat/Directory.hs

@@ -0,0 +1,21 @@
+{-# LANGUAGE CPP #-}
+module Text.Pandoc.Compat.Directory ( getModificationTime )
+       where
+
+#if MIN_VERSION_directory(1,2,0)
+import System.Directory
+
+
+#else
+import qualified System.Directory as S
+import Data.Time.Clock (UTCTime)
+import Data.Time.Clock.POSIX
+import System.Time
+
+getModificationTime :: FilePath -> IO UTCTime
+getModificationTime fp = convert `fmap` S.getModificationTime fp
+    where
+      convert (TOD x _) = posixSecondsToUTCTime (realToFrac x)
+
+#endif
+

src/Text/Pandoc/Readers/Txt2Tags.hs

@@ -50,7 +50,7 @@ import Data.Default
 import Control.Monad.Reader (Reader, runReader, asks)
 
 import Data.Time.LocalTime (getZonedTime)
-import System.Directory (getModificationTime)
+import Text.Pandoc.Compat.Directory(getModificationTime)
 import Data.Time.Format (formatTime)
 import System.Locale (defaultTimeLocale)
 import System.IO.Error (catchIOError)