[Haskell-cafe] Predicate Library?

[Neil Mitchell]

Hi,

I'm trying to manipulate predicates in Haskell, and was wondering if
there was a predicate library available that I could use?

My predicates consist of `and` and `or` over some constraints. I have
various rules which can be used to collapse certain constraints.
Currently I have written my own predicate code, but its not great, and
the simplification is overly hacky. The main facility I want out of
the predicate library is some simplification.

Thanks

Neil