How to make a CAF not a CAF in Haskell?

Question

How do I make a Constant Applicative Form into, well, not a Constant Applicative Form, to stop it being retained for the lifetime of the program?

I\'ve tried this ap

Answer 1

It seems to be a long-standing problem http://hackage.haskell.org/trac/ghc/ticket/917 . And in my opinion a critical one.