"ketti" <kattlachan@gmail.com> wrote:
>
> You have to factor out the types of the modules.
> Lets say we have modules A and B which are mutually recursive.
> A needs to know the signature of B and vise verse.
>
> So we define the signatures somewhere visible to both A and B:
>
> module type A_T = sig ... end
> module type B_T = sig ... end

Note that this only works if the signatures themselves aren't mutually
recursive - which often is the case. Unfortunately, there is no solution
that works in the general case.

- Andreas