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+module Haddock.Backends.Meta where
+
+import Haddock.Utils.Json
+import Haddock.Version
+
+import Data.ByteString.Builder (hPutBuilder)
+import System.FilePath ((</>))
+import System.IO (withFile, IOMode (WriteMode))
+
+-- | Writes a json encoded file containing additional
+-- information about the generated documentation. This
+-- is useful for external tools (e.g. hackage).
+writeHaddockMeta :: FilePath -> IO ()
+writeHaddockMeta odir = do
+ let
+ meta_json :: Value
+ meta_json = object [
+ "haddock_version" .= String projectVersion
+ ]
+
+ withFile (odir </> "meta.json") WriteMode $ \h ->
+ hPutBuilder h (encodeToBuilder meta_json) \ No newline at end of file