From a3e5e8c92c9c5f2915ca714a9efd7788264223cc Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Thu, 19 Nov 2020 07:35:54 +0100
Subject: [PATCH] ocamlPackages.duff: use Dune 2

---
 pkgs/development/ocaml-modules/duff/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/ocaml-modules/duff/default.nix b/pkgs/development/ocaml-modules/duff/default.nix
index 1c6b59961ef..8c9dad42fd7 100644
--- a/pkgs/development/ocaml-modules/duff/default.nix
+++ b/pkgs/development/ocaml-modules/duff/default.nix
@@ -7,6 +7,9 @@
 buildDunePackage rec {
   pname = "duff";
   version = "0.2";
+
+  useDune2 = true;
+
   src = fetchurl {
     url = "https://github.com/mirage/duff/releases/download/v${version}/duff-v${version}.tbz";
     sha256 = "0bi081w4349cqc1n9jsjh1lrcqlnv3nycmvh9fniscv8lz1c0gjq";