How to load core in the toplevel?

[Francois Berenger]

Hello,

I'd like to play with core in my toplevel.

Is there a recipe?

I have installed everything with OPAM:
$ opam list | egrep "core|async"
async                 108.07.01  Monadic concurrency library
async_core            108.07.01  Monadic concurrency library
async_extra           108.07.01  Monadic concurrency library
async_unix            108.07.01  Monadic concurrency library
core                  108.07.01  Industrial strength alternative to OCaml's 
standard library
core_extended                --  Extra components that are not as closely 
vetted or as stable as Core

In my toplevel, I type
#use "topfind";;
#list;;

Nothing about core or async shows up.
While parmap is there, for example.

Is this normal?

I guess there is some configuration file of findlib to tweak somewhere.

Regards,
F.

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