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From: Maxence Guesdon <Maxence.Guesdon@inria.fr>
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Subject: [Caml-list] mixing GADTs and first class modules

Hello,

I thought that something like this was possible:

module type M = sig type t end;;
type _ foo = T : (module M) -> M.t foo;;

but it does not seem so, as I can't refer to type t of the module
parameter:
Error: Unbound type constructor M.t

Is there a workaround ?

Regards,

Maxence