[Haskell-beginners] Getting the Takusen example code to compile - failed import problem

[Daniel Everett]

I have Takusen 0.8.5 installed and I'm trying to build the code found at http://darcs.haskell.org/takusen/doc/html/Database-Enumerator.html using ghc 6.10.3.  This always fails with the error:  

Could not find module `Database.Oracle.Enumerator'

The analogous errors are encountered if I substitute Oracle with Sqlite, Postgresql or ODBC.  Any ideas how to resolve this?

TIA,

Daniel