base split in GHC 6.8.1

[Neil Mitchell]

Hi

> The following library packages on HackageDB fail with missing modules
> under GHC 6.8.1, usually due to the base split:

How do we fix it? Clearly making it 6.8.1 compatible is a good thing,
but breaking 6.6.1 compatibility would be bad - and requiring everyone
to update their Cabal is likely to be equally painful.

If someone could write a brief tutorial (perhaps on the Wiki) of the
recommended (TM) way to go, I'll update my packages.

Thanks

Neil