ocamlPackages.lua-ml: install using opaline instead of inheriting from dune

pkgs/development/ocaml-modules/lua-ml/default.nix

···
-{ stdenv, lib, fetchFromGitHub, ocaml, findlib, ocamlbuild, dune }:
+{ stdenv, lib, fetchFromGitHub, ocaml, findlib, ocamlbuild, opaline }:
 
 if !lib.versionAtLeast ocaml.version "4.07"
 then throw "lua-ml is not available for OCaml ${ocaml.version}"
···
     sha256 = "04lv98nxmzanvyn4c0k6k0ax29f5xfdl8qzpf5hwadslq213a044";
   };
 
+  nativeBuildInputs = [ opaline ];
   buildInputs = [ ocaml findlib ocamlbuild ];
 
   buildFlags = [ "lib" ];
 
-  inherit (dune) installPhase;
+  installPhase = ''
+    opaline -prefix $out -libdir $OCAMLFIND_DESTDIR
+  '';
 
   meta = {
     description = "An embeddable Lua 2.5 interpreter implemented in OCaml";