Make commands build on ghc 7.10 as well

cmd/unzip.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE RecordWildCards #-}
 import           Control.Monad (when, unless)
 import           Control.Monad.IO.Class (liftIO)
@@ -6,7 +7,11 @@ import qualified Data.ByteString.Char8 as BSC
 import qualified Data.Conduit as C
 import qualified Data.Conduit.Binary as CB
 import           Data.Time.LocalTime (localTimeToUTC, utc)
-import           System.Directory (createDirectoryIfMissing, setModificationTime)
+import           System.Directory (createDirectoryIfMissing
+#if MIN_VERSION_directory(1,2,3)
+  , setModificationTime
+#endif
+  )
 import           System.Environment (getProgName, getArgs)
 import           System.Exit (exitFailure)
 import           System.FilePath.Posix (takeDirectory) -- zip files only use forward slashes
@@ -26,7 +31,9 @@ extract = C.awaitForever start where
         mapM_ (liftIO . hSetFileSize h . toInteger) zipEntrySize
         write C..| CB.sinkHandle h
         liftIO $ hClose h
+#if MIN_VERSION_directory(1,2,3)
     liftIO $ setModificationTime name $ localTimeToUTC utc zipEntryTime -- FIXME: timezone
+#endif
     where name = BSC.unpack $ BSC.dropWhile ('/' ==) zipEntryName -- should we utf8 decode?
   start (Right _) = fail "Unexpected leading or directory data contents"
   write = C.await >>= maybe

cmd/zip.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 import           Control.Monad (filterM, void)
 import           Control.Monad.IO.Class (MonadIO, liftIO)
 import           Control.Monad.Trans.Resource (MonadResource, runResourceT)
@@ -7,7 +8,13 @@ import qualified Data.Conduit.Binary as CB
 import           Data.List (foldl')
 import           Data.Time.LocalTime (utcToLocalTime, utc)
 import qualified System.Console.GetOpt as Opt
-import           System.Directory (doesDirectoryExist, getModificationTime, isSymbolicLink, listDirectory)
+import           System.Directory (doesDirectoryExist, getModificationTime
+#if MIN_VERSION_directory(1,2,6)
+  , isSymbolicLink, listDirectory
+#else
+  , getDirectoryContents
+#endif
+  )
 import           System.Environment (getProgName, getArgs)
 import           System.Exit (exitFailure)
 import           System.FilePath.Posix ((</>)) -- zip files only want forward slashes
@@ -38,7 +45,11 @@ generate (p:paths) = do
   isd <- liftIO $ doesDirectoryExist p
   if isd
     then do
+#if MIN_VERSION_directory(1,2,6)
       dl <- liftIO $ filterM (fmap not . isSymbolicLink) . map (p </>) =<< listDirectory p
+#else
+      dl <- liftIO $ filter (`notElem` [".",".."]) . map (p </>) <$> getDirectoryContents p
+#endif
       C.yield (e{ zipEntryName = zipEntryName e `BSC.snoc` '/', zipEntrySize = Just 0 }, mempty)
       generate $ dl ++ paths
     else do

zip-stream.cabal

@@ -15,10 +15,6 @@ source-repository head
   type:     git
   location: https://github.com/dylex/zip-stream
 
-flag commands
-  description: Build command-line zip/unzip testing programs
-  default: True
-
 library
   exposed-modules:     
     Codec.Archive.Zip.Conduit.Types
@@ -45,40 +41,34 @@ library
     zlib
 
 executable unzip-stream
-  if !flag(commands)
-    buildable: False
   main-is: unzip.hs
   hs-source-dirs: cmd
   default-language:    Haskell2010
   ghc-options: -Wall
-  if flag(commands)
-    build-depends:
-      base >=4.9 && <5,
-      bytestring,
-      conduit,
-      conduit-extra,
-      directory >= 1.2.3,
-      filepath,
-      time,
-      zip-stream
-  else
-    buildable: False
+  build-depends:
+    base >=4.8 && <5,
+    bytestring,
+    conduit,
+    conduit-extra,
+    directory >= 1.2.2,
+    filepath,
+    time,
+    transformers,
+    zip-stream
 
 executable zip-stream
   main-is: zip.hs
   hs-source-dirs: cmd
   default-language:    Haskell2010
   ghc-options: -Wall
-  if flag(commands)
-    build-depends:
-      base >=4.9 && <5,
-      bytestring,
-      conduit,
-      conduit-extra,
-      directory >= 1.2.6,
-      filepath,
-      resourcet,
-      time,
-      zip-stream
-  else
-    buildable: False
+  build-depends:
+    base >=4.8 && <5,
+    bytestring,
+    conduit,
+    conduit-extra,
+    directory >= 1.2.2,
+    filepath,
+    resourcet,
+    time,
+    transformers,
+    zip-stream