depot/third_party/nixpkgs/pkgs/development/ocaml-modules/cstruct/lwt.nix

{
  lib,
  buildDunePackage,
  cstruct,
  lwt,
}:

if lib.versionOlder (cstruct.version or "1") "3" then
  cstruct
else

  buildDunePackage {
    pname = "cstruct-lwt";
    inherit (cstruct) version src meta;

    minimalOCamlVersion = "4.08";
    duneVersion = "3";

    propagatedBuildInputs = [
      cstruct
      lwt
    ];
  }