Fix typo

Language/Haskell/GhcMod/CabalHelper.hs

@@ -77,7 +77,7 @@ getPackageDbStack' = chCached Cached {
   cacheFile = pkgDbStackCacheFile,
   cachedAction = \ _tcf (progs, rootdir, distdir, _) _ma -> do
     dbs <- withCabal $ map chPkgToGhcPkg <$> runQuery' progs rootdir distdir packageDbStack
-    return ([setupConfigPath, sandboConfigFile], dbs)
+    return ([setupConfigPath, sandboxConfigFile], dbs)
  }
 
 chPkgToGhcPkg :: ChPkgDb -> GhcPkgDb

Language/Haskell/GhcMod/PathsAndFiles.hs

@@ -144,7 +144,7 @@ findCabalSandboxDir dir = do
              _ -> Nothing
 
  where
-   isSandboxConfig = (==sandboConfigFile)
+   isSandboxConfig = (==sandboxConfigFile)
 
 zipMapM :: Monad m => (a -> m c) -> [a] -> m [(a,c)]
 zipMapM f as = mapM (\a -> liftM ((,) a) $ f a) as
@@ -180,8 +180,8 @@ parents dir' =
 setupConfigFile :: Cradle -> FilePath
 setupConfigFile crdl = cradleRootDir crdl </> setupConfigPath
 
-sandboConfigFile :: FilePath
-sandboConfigFile = "cabal.sandbox.config"
+sandboxConfigFile :: FilePath
+sandboxConfigFile = "cabal.sandbox.config"
 
 -- | Path to 'LocalBuildInfo' file, usually @dist/setup-config@
 setupConfigPath :: FilePath