[Haskell-cafe] Externally derive instance of Data?

Hi, Given a datatype defined somewhere in a third-party package, without deriving (Data) specified. Is it possible, in my module which is importing that datatype from that package, to auto-derive instance of Data for the said datatype? The goal is not to recompile the package just because an auto-derived instance is needed. Or no way other than to recompile the package? Thanks. -- Dimitry Golubovsky Anywhere on the Web