fix a bug when writing things out

(it didn't check if directories to save maps in actually existed)

lib/WriteRepo.hs

@@ -36,9 +36,9 @@ writeAdjustedRepository config inPath outPath result
         createDirectoryIfMissing True outPath
 
         -- write out all maps
-        mapM_
-          (\(path,out) -> encodeFile (outPath </> path) $ mapresultAdjusted out)
-          (toList $ dirresultMaps result)
+        forM_ (toList $ dirresultMaps result) $ \(path,out) -> do
+          createDirectoryIfMissing True (takeDirectory (outPath </> path))
+          encodeFile (outPath </> path) $ mapresultAdjusted out
 
         unless (configDontCopyAssets config) $ do
           -- collect asset dependencies of maps