[Haskell-cafe] Is there a plan for HappS and ghc-6.10.1?

Hugo Pacheco hpacheco at gmail.com
Sun Nov 9 07:46:47 EST 2008

Hi all,
The HappS version on Hackage does not yet support ghc 6.10, since GADT
pattern matching and the Exception API have changed.
One sample error is:
    GADT pattern match with non-rigid result type `t1'
      Solution: add a type signature

Adding a type signature via an auxiliary function instead of a case
expression, the problem goes away.

readElementRigidity :: (Monad m,Xml t) => Rigidity m -> m ([Element],t) ->
Maybe  t
readElementRigidity Rigid m = ...
readElementRigidity Flexible m = ...

Is there a plan to update the version on Hackage to support ghc 6.10.1?
I don't know either if it may break backwards compatibility.


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