From fac2a5c6c7173f8aee139ac79f311df1b040eaee Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Wed, 19 Apr 2023 08:38:06 +0200
Subject: [PATCH] ocamlPackages.lwt_camlp4: fix build

---
 pkgs/development/ocaml-modules/lwt/camlp4.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/ocaml-modules/lwt/camlp4.nix b/pkgs/development/ocaml-modules/lwt/camlp4.nix
index e48d7cfa185a..de8252c55549 100644
--- a/pkgs/development/ocaml-modules/lwt/camlp4.nix
+++ b/pkgs/development/ocaml-modules/lwt/camlp4.nix
@@ -11,10 +11,11 @@ buildDunePackage rec {
     sha256 = "1lv8z6ljfy47yvxmwf5jrvc5d3dc90r1n291x53j161sf22ddrk9";
   };
 
-  useDune2 = false;
+  duneVersion = "1";
 
   minimalOCamlVersion = "4.02";
 
+  nativeBuildInputs = [ camlp4 ];
   propagatedBuildInputs = [ camlp4 ];
 
   preBuild = "rm META.lwt_camlp4";