diff --git a/haskell/src/Data/MessagePack/Packer.hs b/haskell/src/Data/MessagePack/Packer.hs
deleted file mode 100644
index 9c10f5ed..00000000
--- a/haskell/src/Data/MessagePack/Packer.hs
+++ /dev/null
@@ -1,147 +0,0 @@
-{-# Language FlexibleInstances #-}
-{-# Language OverlappingInstances #-}
-
-module Data.MessagePack.Packer(
-  ObjectPut(..),
-  ) where
-
-import Data.Binary.Put
-import Data.Binary.IEEE754
-import Data.Bits
-import qualified Data.ByteString as B
-
-import Data.MessagePack.Object
-
-class ObjectPut a where
-  put :: a -> Put
-
-instance ObjectPut Object where
-  put = putObject
-
-instance ObjectPut Int where
-  put = putInteger
-
-instance ObjectPut () where
-  put _ = putNil
-
-instance ObjectPut Bool where
-  put = putBool
-
-instance ObjectPut Double where
-  put = putDouble
-
-instance ObjectPut B.ByteString where
-  put = putRAW
-
-instance ObjectPut a => ObjectPut [a] where
-  put = putArray
-
-instance (ObjectPut k, ObjectPut v) => ObjectPut [(k, v)] where
-  put = putMap
-
-putObject :: Object -> Put
-putObject obj =
-  case obj of
-    ObjectInteger n ->
-      putInteger n
-    ObjectNil ->
-      putNil
-    ObjectBool b ->
-      putBool b
-    ObjectDouble d ->
-      putDouble d
-    ObjectRAW raw ->
-      putRAW raw
-    ObjectArray arr ->
-      putArray arr
-    ObjectMap m ->
-      putMap m
-
-putInteger :: Int -> Put      
-putInteger n =
-  case n of
-    _ | n >= 0 && n <= 127 ->
-      putWord8 $ fromIntegral n
-    _ | n >= -32 && n <= -1 ->
-      putWord8 $ fromIntegral n
-    _ | n >= 0 && n < 0x100 -> do
-      putWord8 0xCC
-      putWord8 $ fromIntegral n
-    _ | n >= 0 && n < 0x10000 -> do
-      putWord8 0xCD
-      putWord16be $ fromIntegral n
-    _ | n >= 0 && n < 0x100000000 -> do
-      putWord8 0xCE
-      putWord32be $ fromIntegral n
-    _ | n >= 0 -> do
-      putWord8 0xCF
-      putWord64be $ fromIntegral n
-    _ | n >= -0x100 -> do
-      putWord8 0xD0
-      putWord8 $ fromIntegral n
-    _ | n >= -0x10000 -> do
-      putWord8 0xD1
-      putWord16be $ fromIntegral n
-    _ | n >= -0x100000000 -> do
-      putWord8 0xD2
-      putWord32be $ fromIntegral n
-    _ -> do
-      putWord8 0xD3
-      putWord64be $ fromIntegral n
-
-putNil :: Put
-putNil = putWord8 0xC0
-
-putBool :: Bool -> Put
-putBool True = putWord8 0xC3
-putBool False = putWord8 0xC2
-
-putDouble :: Double -> Put
-putDouble d = do
-  putWord8 0xCB
-  putFloat64be d
-
-putRAW :: B.ByteString -> Put
-putRAW bs = do
-  case len of
-    _ | len <= 31 -> do
-      putWord8 $ 0xA0 .|. fromIntegral len
-    _ | len < 0x10000 -> do
-      putWord8 0xDA
-      putWord16be $ fromIntegral len
-    _ -> do
-      putWord8 0xDB
-      putWord32be $ fromIntegral len
-  putByteString bs
-  where
-    len = B.length bs
-
-putArray :: ObjectPut a => [a] -> Put
-putArray arr = do
-  case len of
-    _ | len <= 15 ->
-      putWord8 $ 0x90 .|. fromIntegral len
-    _ | len < 0x10000 -> do
-      putWord8 0xDC
-      putWord16be $ fromIntegral len
-    _ -> do
-      putWord8 0xDD
-      putWord32be $ fromIntegral len
-  mapM_ put arr
-  where
-    len = length arr
-
-putMap :: (ObjectPut k, ObjectPut v) => [(k, v)] -> Put
-putMap m = do
-  case len of
-    _ | len <= 15 ->
-      putWord8 $ 0x80 .|. fromIntegral len
-    _ | len < 0x10000 -> do
-      putWord8 0xDE
-      putWord16be $ fromIntegral len
-    _ -> do
-      putWord8 0xDF
-      putWord16be $ fromIntegral len
-  mapM_ (\(k, v) -> put k >> put v) m
-  where
-    len = length m