Alert deprecated: Toploop.directive_table

[ddickstein]

I'm running into this error when trying to build my project with dune.

$ dune build -w @runtest @all --terminal-persistence=clear-on-rebuild
Entering directory '/my/project/root'
File "/my/project/root/_build/.dune/default/duniverse/stdlib-shims/src/dune.ml", line 28, characters 14-37:
28 |   Hashtbl.add Toploop.directive_table "require"
                   ^^^^^^^^^^^^^^^^^^^^^^^
Alert deprecated: Toploop.directive_table
File "/my/project/root/_build/.dune/default/duniverse/stdlib-shims/src/dune.ml", line 30, characters 14-37:
30 |   Hashtbl.add Toploop.directive_table "use"
                   ^^^^^^^^^^^^^^^^^^^^^^^
Alert deprecated: Toploop.directive_table
File "/my/project/root/_build/.dune/default/duniverse/stdlib-shims/src/dune.ml", line 34, characters 14-37:
34 |   Hashtbl.add Toploop.directive_table "use_mod"
                   ^^^^^^^^^^^^^^^^^^^^^^^
Alert deprecated: Toploop.directive_table

Specifications

• Version of dune (output of dune --version): 2.9.1
• Version of ocaml (output of ocamlc --version): 4.13.0
• Operating system (distribution and version): Arch Linux 5.15.6-arch2-1

In the short term how can I suppress the warning?

[nojb]

This has been fixed in #4834, but I believe there is no release yet with it. Otherwise I think the only option is to downgrade the OCaml version to 4.12 where this function is not yet deprecated.