ocamlnet not working with ocaml version after version 5

[emrahbillur]

nixpkgs 23.11 had 4.14 version of ocaml as default so ghaf imports and fog-ghaf was working without issues with ghaf-caml-crush library. Unfortunately the latest nixpkgs use ocaml 5.11 as default where we get an error

ocamlnet is not available for ocaml version > 5

As could be seen below
https://github.com/ocaml/opam-repository/blob/master/packages/ocamlnet/ocamlnet.4.1.9-2/opam
depends: [
"ocaml" {>= "4.02" & < "5"}