From ff910956e9ff28596537c604453c12c4bef5fd44 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Fri, 6 Oct 2023 07:17:26 +0200
Subject: [PATCH] =?UTF-8?q?ocamlPackages.kafka=5Flwt:=20disable=20for=20OC?=
 =?UTF-8?q?aml=20=E2=89=A5=205.0?=
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---
 pkgs/development/ocaml-modules/kafka/default.nix | 2 --
 pkgs/development/ocaml-modules/kafka/lwt.nix     | 7 ++++++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/ocaml-modules/kafka/default.nix b/pkgs/development/ocaml-modules/kafka/default.nix
index 7636942033a9..28c380a4616d 100644
--- a/pkgs/development/ocaml-modules/kafka/default.nix
+++ b/pkgs/development/ocaml-modules/kafka/default.nix
@@ -5,8 +5,6 @@ buildDunePackage rec {
   pname = "kafka";
   version = "0.5";
 
-  useDune2 = true;
-
   src = fetchurl {
     url = "https://github.com/didier-wenzek/ocaml-kafka/releases/download/${version}/kafka-${version}.tbz";
     sha256 = "0m9212yap0a00hd0f61i4y4fna3141p77qj3mm7jl1h4q60jdhvy";
diff --git a/pkgs/development/ocaml-modules/kafka/lwt.nix b/pkgs/development/ocaml-modules/kafka/lwt.nix
index a6cef66b2761..da931d6e8bff 100644
--- a/pkgs/development/ocaml-modules/kafka/lwt.nix
+++ b/pkgs/development/ocaml-modules/kafka/lwt.nix
@@ -1,13 +1,18 @@
 { buildDunePackage
+, ocaml
+, lib
 , kafka
 , lwt
 , cmdliner
 }:
 
+lib.throwIf (lib.versionAtLeast ocaml.version "5.0")
+  "kafka_lwt is not available for OCaml ${ocaml.version}"
+
 buildDunePackage rec {
   pname = "kafka_lwt";
 
-  inherit (kafka) version useDune2 src;
+  inherit (kafka) version src;
 
   buildInputs = [ cmdliner ];