remove build-depend to unix module

CabalDev.hs

@@ -8,11 +8,10 @@ options ghc-mod uses to check the source.  Otherwise just pass it on.
 -}
 
 import Control.Applicative    ((<$>))
-import Data.Maybe             (listToMaybe)
+import Data.List              (find)
-import System.FilePath.Find
+import System.FilePath        (splitPath,joinPath,(</>))
-import System.FilePath.Posix  (splitPath,joinPath,(</>))
-import System.Posix.Directory (getWorkingDirectory)
 import System.Directory
+import Text.Regex.Posix       ((=~))
 
 import Types
 
@@ -26,7 +25,7 @@ modifyOptions opts =
 
 findCabalDev :: IO (Maybe String)
 findCabalDev =
-  getWorkingDirectory >>= searchIt . splitPath
+  getCurrentDirectory >>= searchIt . splitPath
 
 addPath :: Options -> String -> Options
 addPath orig_opts path = do
@@ -38,8 +37,13 @@ searchIt [] = return Nothing
 searchIt path = do
   a <- doesDirectoryExist (mpath path)
   if a then do
-    listToMaybe <$> find always (fileName ~~? "packages*.conf") (mpath path)
+    findConf (mpath path)
   else
     searchIt $ init path
   where
     mpath a = joinPath a </> "cabal-dev/"
+
+findConf :: FilePath -> IO (Maybe FilePath)
+findConf path = do
+  f <- find (=~ "packages.*\\.conf") <$> getDirectoryContents path
+  return $ ((path </>) <$> f)

ghc-mod.cabal

@@ -29,8 +29,8 @@ Executable ghc-mod
   else
     GHC-Options:        -Wall
   Build-Depends:        base >= 4.0 && < 5, ghc, ghc-paths, transformers,
-                        process, directory, filepath, old-time, unix,
+                        process, directory, filepath, old-time,
-                        hlint >= 1.7.1, filemanip,
+                        hlint >= 1.7.1, regex-posix,
                         attoparsec, enumerator, attoparsec-enumerator
 Source-Repository head
   Type:                 git