(Deriving) instances in .hi-boot not possible

[Volker Stolz]

It looks like it's not possible to declare instances in a .hi-boot file.
If nobody proves me wrong, I'd like to add a comment about that to the user's
guide's hi-boot section...

Thread on ghc-users:
http://www.mail-archive.com/glasgow-haskell-users@haskell.org/msg04391.html
-- 
Volker Stolz * http://www-i2.informatik.rwth-aachen.de/stolz/ * PGP * S/MIME