squash compiler warnings on Windows

Annex/Content.hs

@@ -48,12 +48,14 @@ import Types.Key
 import Utility.DataUnits
 import Utility.CopyFile
 import Config
-import Annex.Exception
 import Git.SharedRepository
 import Annex.Perms
 import Annex.Link
 import Annex.Content.Direct
 import Annex.ReplaceFile
+#ifndef mingw32_HOST_OS
+import Annex.Exception
+#endif
 
 {- Checks if a given key's content is currently present. -}
 inAnnex :: Key -> Annex Bool
@@ -91,34 +93,34 @@ inAnnexSafe :: Key -> Annex (Maybe Bool)
 inAnnexSafe = inAnnex' (fromMaybe False) (Just False) go
   where
 	go f = liftIO $ openforlock f >>= check
-	openforlock f = catchMaybeIO $
 #ifndef mingw32_HOST_OS
+	openforlock f = catchMaybeIO $
 		openFd f ReadOnly Nothing defaultFileFlags
 #else
-		return ()
+	openforlock _ = return $ Just ()
 #endif
 	check Nothing = return is_missing
-	check (Just h) = do
 #ifndef mingw32_HOST_OS
+	check (Just h) = do
 		v <- getLock h (ReadLock, AbsoluteSeek, 0, 0)
 		closeFd h
 		return $ case v of
 			Just _ -> is_locked
 			Nothing -> is_unlocked
 #else
-		return is_unlocked
+	check (Just _) = return is_unlocked
 #endif
+#ifndef mingw32_HOST_OS
 	is_locked = Nothing
+#endif
 	is_unlocked = Just True
 	is_missing = Just False
 
 {- Content is exclusively locked while running an action that might remove
  - it. (If the content is not present, no locking is done.) -}
 lockContent :: Key -> Annex a -> Annex a
-lockContent key a = do
-#ifdef mingw32_HOST_OS
-	a
-#else
+#ifndef mingw32_HOST_OS
+lockContent key a =
 	file <- calcRepo $ gitAnnexLocation key
 	bracketIO (openforlock file >>= lock) unlock (const a)
   where
@@ -140,6 +142,8 @@ lockContent key a = do
 			Right _ -> return $ Just fd
 	unlock Nothing = noop
 	unlock (Just l) = closeFd l
+#else
+lockContent _key a = a -- no locking for Windows!
 #endif
 
 {- Runs an action, passing it a temporary filename to get,

Annex/LockPool.hs

@@ -14,7 +14,9 @@ import System.Posix.Types (Fd)
 
 import Common.Annex
 import Annex
+#ifndef mingw32_HOST_OS
 import Annex.Perms
+#endif
 
 {- Create a specified lock file, and takes a shared lock. -}
 lockFile :: FilePath -> Annex ()

Annex/Ssh.hs

@@ -19,11 +19,13 @@ import Data.Hash.MD5
 
 import Common.Annex
 import Annex.LockPool
-import Annex.Perms
 import qualified Build.SysConfig as SysConfig
 import qualified Annex
 import Config
 import Utility.Env
+#ifndef mingw32_HOST_OS
+import Annex.Perms
+#endif
 
 {- Generates parameters to ssh to a given host (or user@host) on a given
  - port, with connection caching. -}

Creds.hs

@@ -15,7 +15,9 @@ import Utility.FileMode
 import Crypto
 import Types.Remote (RemoteConfig, RemoteConfigKey)
 import Remote.Helper.Encryptable (remoteCipher, embedCreds)
+#ifndef mingw32_HOST_OS
 import Utility.Env (setEnv)
+#endif
 
 import System.Environment
 import qualified Data.ByteString.Lazy.Char8 as L

Git.hs

@@ -38,7 +38,9 @@ import System.Posix.Files
 
 import Common
 import Git.Types
+#ifndef mingw32_HOST_OS
 import Utility.FileMode
+#endif
 
 {- User-visible description of a git repo. -}
 repoDescribe :: Repo -> String

Limit.hs

@@ -35,9 +35,11 @@ import Utility.DataUnits
 import Text.Regex.TDFA
 import Text.Regex.TDFA.String
 #else
+#ifndef mingw32_HOST_OS
 import System.Path.WildMatch
 import Types.FileMatcher
 #endif
+#endif
 
 type MatchFiles = AssumeNotPresent -> FileInfo -> Annex Bool
 type MkLimit = String -> Either String MatchFiles

Remote/Git.hs

@@ -17,7 +17,6 @@ import qualified Data.Map as M
 import Control.Exception.Extensible
 
 import Common.Annex
-import Utility.CopyFile
 import Utility.Rsync
 import Remote.Helper.Ssh
 import Annex.Ssh
@@ -44,6 +43,9 @@ import Types.Key
 import qualified Fields
 import Logs.Location
 import Utility.Metered
+#ifndef mingw32_HOST_OS
+import Utility.CopyFile
+#endif
 
 import Control.Concurrent
 import Control.Concurrent.MSampleVar
@@ -360,8 +362,8 @@ copyFromRemote' r key file dest
 		bracketIO noop (const $ tryIO $ killThread tid) (const $ a feeder)
 
 copyFromRemoteCheap :: Remote -> Key -> FilePath -> Annex Bool
-copyFromRemoteCheap r key file
 #ifndef mingw32_HOST_OS
+copyFromRemoteCheap r key file
 	| not $ Git.repoIsUrl (repo r) = guardUsable (repo r) False $ do
 		loc <- liftIO $ gitAnnexLocation key (repo r) $
 			fromJust $ remoteGitConfig $ gitconfig r
@@ -371,8 +373,10 @@ copyFromRemoteCheap r key file
 			( copyFromRemote' r key Nothing file
 			, return False
 			)
-#endif
 	| otherwise = return False
+#else
+copyFromRemoteCheap _ _ _ = return False
+#endif
 
 {- Tries to copy a key's content to a remote's annex. -}
 copyToRemote :: Remote -> Key -> AssociatedFile -> MeterUpdate -> Annex Bool

Remote/Helper/Hooks.hs

@@ -15,7 +15,9 @@ import Common.Annex
 import Types.Remote
 import qualified Annex
 import Annex.LockPool
+#ifndef mingw32_HOST_OS
 import Annex.Perms
+#endif
 
 {- Modifies a remote's access functions to first run the
  - annex-start-command hook, and trigger annex-stop-command on shutdown.