Flycheck-ocaml and 'dune-project' file

[Fourchaux]

Configuration:
OCaml 4.14.0 - Emacs 29.0.50 - Tuareg (v3.0.1) - Merlin (v4.6-414, for OCaml 4.14.0) - Linux Box x86_64

After having tried several OCaml files (some very old and in any case without using Dune)
it seems that the mere presence of a 'dune-project' file (even empty!) is enough to activate Flycheck-ocaml.

Is this behavior general?

If so, it would be good to modify the README by specifying this simplification.
(No need to setup a Dune project and run dune build)