Hi,

I've updated to the latest version of Sexplib, and the support for hashtable serialisation

seems broken or at least changed.  I was accustomed to using the syntax extension

for convenient declaration of (de)serialisers, and this worked too for the Hashtbl module.

For example:

type dict_t = (key_t, value_t) Hashtbl.t with sexp

But with Sexplib 7.0.4 this produces an error:

Error: Unbound value Hashtbl.t_of_sexp

Is this a bug, or must the (de)serialisers be declared manually with the newer versions

of Sexplib?

Thanks in advance for your time!

Best regards,

Dario Teixeira