ocamlPackages.ppx_cstruct: disable tests for OCaml ≥ 5.1

{ lib, buildDunePackage, cstruct, sexplib, ppxlib

{ lib, buildDunePackage, ocaml, cstruct, sexplib, ppxlib

, ocaml-migrate-parsetree-2

, ounit, cppo, ppx_sexp_conv, cstruct-unix, cstruct-sexp

}:

    propagatedBuildInputs = [ cstruct ppxlib sexplib ];

    doCheck = true;

    doCheck = !lib.versionAtLeast ocaml.version "5.1";

    nativeCheckInputs = [ cppo ];

    checkInputs = [ ounit ppx_sexp_conv cstruct-sexp cstruct-unix ocaml-migrate-parsetree-2 ];

  }