[Haskell-beginners] Extract and integer from a ByteString

[Stephen Tetley]

Further,

Data.Binary is distributed with GHC but it isn't always an accessible
module: you can see the module references in Haddock docs distributed
with GHC, but you can't load the modules in your own projects
(certainly on GHC 6.12.2 it is hidden).

If this is the case for the GHC you are using, you have to get and
install "binary" from Hackage.

http://hackage.haskell.org/package/binary

Best wishes

Stephen