fix build on windows

Annex.GitOverlay was using a module that needs posix to build.

Annex/GitOverlay.hs

@@ -24,7 +24,7 @@ import qualified Utility.LockFile.PidLock as PidF
 import qualified Utility.LockPool.PidLock as PidP
 import Utility.LockPool (dropLock)
 import Utility.Env
-import Annex.LockPool.PosixOrPid (pidLockFile)
+import Config
 
 {- Runs an action using a different git index file. -}
 withIndexFile :: AltIndexFile -> (FilePath -> Annex a) -> Annex a

Annex/LockPool/PosixOrPid.hs

@@ -18,12 +18,10 @@ module Annex.LockPool.PosixOrPid (
 	LockStatus(..),
 	getLockStatus,
 	checkSaneLock,
-	pidLockFile,
 ) where
 
 import Common
 import Types
-import Annex.Locations
 import qualified Annex
 import qualified Utility.LockPool.Posix as Posix
 import qualified Utility.LockPool.PidLock as Pid
@@ -32,6 +30,7 @@ import Utility.LockPool.LockHandle (LockHandle, dropLock)
 import Utility.LockFile.Posix (openLockFile)
 import Utility.LockPool.STM (LockFile)
 import Utility.LockFile.LockStatus
+import Config (pidLockFile)
 
 import System.Posix
 
@@ -63,12 +62,6 @@ checkSaneLock :: LockFile -> LockHandle -> Annex Bool
 checkSaneLock f h = H.checkSaneLock f h
 	`pidLockCheck` flip Pid.checkSaneLock h
 
-pidLockFile :: Annex (Maybe FilePath)
-pidLockFile = ifM (annexPidLock <$> Annex.getGitConfig)
-	( Just <$> Annex.fromRepo gitAnnexPidLockFile
-	, pure Nothing
-	)
-
 pidLockCheck :: IO a -> (LockFile -> IO a) -> Annex a
 pidLockCheck posixcheck pidcheck = debugLocks $
 	liftIO . maybe posixcheck pidcheck =<< pidLockFile

Config.hs

@@ -6,12 +6,14 @@
  -}
 
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE CPP #-}
 
 module Config (
 	module Config,
 	annexConfig,
 	remoteAnnexConfig,
 	remoteConfig,
+	pidLockFile,
 ) where
 
 import Annex.Common
@@ -23,6 +25,7 @@ import Config.Cost
 import Config.DynamicConfig
 import Types.Availability
 import Types.GitConfig
+import Annex.Locations
 import Git.Types
 
 {- Looks up a setting in git config. This is not as efficient as using the
@@ -83,3 +86,13 @@ crippledFileSystem = annexCrippledFileSystem <$> Annex.getGitConfig
 setCrippledFileSystem :: Bool -> Annex ()
 setCrippledFileSystem b =
 	setConfig (annexConfig "crippledfilesystem") (Git.Config.boolConfig b)
+
+pidLockFile :: Annex (Maybe FilePath)
+#ifndef mingw32_HOST_OS
+pidLockFile = ifM (annexPidLock <$> Annex.getGitConfig)
+	( Just <$> Annex.fromRepo gitAnnexPidLockFile
+	, pure Nothing
+	)
+#else
+pidLockFile = pure Nothing
+#endif