PROPOSAL: re-export 'Typeable' type-class from Prelude

Felipe Lessa felipe.lessa at
Thu Sep 11 14:11:38 UTC 2014

On 11-09-2014 11:05, Michael Snoyman wrote:
> The one case I think Typeable should *always* be around for is creating
> new instances of Exception. The fact that AutoDeriveTypeable doesn't
> require Typeable in Prelude lessens my +1 a bit down to a +0.5, but I
> really want it to be easier for people to define their own exception types.

That's an argument for exporting Typeable from Control.Exception, since
Prelude does not export Exception and friends.


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