From 97ea0e7236f3cd189d2b9ed10449cb1b6ce5fd05 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Sun, 15 Jan 2023 08:55:33 +0100
Subject: [PATCH] opam-installer: use Dune 3

---
 pkgs/development/tools/ocaml/opam/installer.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/tools/ocaml/opam/installer.nix b/pkgs/development/tools/ocaml/opam/installer.nix
index 4501ddd63f04..9b3b7a5617ba 100644
--- a/pkgs/development/tools/ocaml/opam/installer.nix
+++ b/pkgs/development/tools/ocaml/opam/installer.nix
@@ -3,7 +3,7 @@
 ocamlPackages.buildDunePackage {
   pname = "opam-installer";
 
-  useDune2 = true;
+  duneVersion = "3";
 
   inherit (opam) version src;
   nativeBuildInputs = [ unzip ];