From 50a35f7c20256b9de289e5e1470b51d6b1552c7b Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Fri, 10 Mar 2023 20:51:14 +0100
Subject: [PATCH] ocamlPackages.happy-eyeballs: use Dune 3

---
 pkgs/development/ocaml-modules/happy-eyeballs/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/ocaml-modules/happy-eyeballs/default.nix b/pkgs/development/ocaml-modules/happy-eyeballs/default.nix
index b70c6af0f8e..79b1a30d61f 100644
--- a/pkgs/development/ocaml-modules/happy-eyeballs/default.nix
+++ b/pkgs/development/ocaml-modules/happy-eyeballs/default.nix
@@ -7,6 +7,7 @@ buildDunePackage rec {
   version = "0.5.0";
 
   minimalOCamlVersion = "4.08";
+  duneVersion = "3";
 
   src = fetchurl {
     url = "https://github.com/roburio/happy-eyeballs/releases/download/v${version}/happy-eyeballs-${version}.tbz";