[input-output-hk/cardano-sl] CDEC-494: Prepare for consolidation of blund files into epoch files (#3440)

erikd commented on this pull request.

> + where
+ handler e
+ | isDoesNotExistError e = pure ()
+ | otherwise = throwM e
+
+— | Paths at which we store the block data.
+data BlockStoragePaths = BlockStoragePaths
+ { bspRoot :: FilePath
+ — | Block data itself.
+ , bspBlock :: FilePath
+ — | Undo information for a block.
+ , bspUndo :: FilePath
+ — | Combined storage format. Either this or a combination of ‘Block’ and
+ — ‘Undo’ files will be present.
+ , bspBlund :: FilePath
+ }

You’re right. That was code moved from another file :)