[bug#45133] Add ocaml reactiveData

[divoplade]

Le mercredi 09 décembre 2020 à 18:59 +0100, zimoun a écrit :
> I have not look into the details but since there is an opam file and
> a
> topkg.ml file, I am confused why usual OCaml build dance does not
> work
> here.

I'm not sure that's the reason, but the ocaml build dance runs make
install, and there's no install target in the Makefile, and the opam
file does not need to have an install target because it installs
everything. I think.