From 23100ea3c8cbae76dd672d4c5ed67e668ac2061d Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Mon, 10 Apr 2023 14:14:53 +0200
Subject: [PATCH] ocamlPackages.ff: use Dune 3

---
 pkgs/development/ocaml-modules/ff/default.nix | 1 +
 pkgs/development/ocaml-modules/ff/pbt.nix     | 1 +
 pkgs/development/ocaml-modules/ff/sig.nix     | 2 ++
 3 files changed, 4 insertions(+)

diff --git a/pkgs/development/ocaml-modules/ff/default.nix b/pkgs/development/ocaml-modules/ff/default.nix
index 5681b33cb76..bffec212b93 100644
--- a/pkgs/development/ocaml-modules/ff/default.nix
+++ b/pkgs/development/ocaml-modules/ff/default.nix
@@ -3,6 +3,7 @@
 buildDunePackage rec {
   pname = "ff";
   inherit (ff-sig) version src;
+  duneVersion = "3";
 
   propagatedBuildInputs = [
     ff-sig
diff --git a/pkgs/development/ocaml-modules/ff/pbt.nix b/pkgs/development/ocaml-modules/ff/pbt.nix
index ffd78381127..fe8234c2572 100644
--- a/pkgs/development/ocaml-modules/ff/pbt.nix
+++ b/pkgs/development/ocaml-modules/ff/pbt.nix
@@ -5,6 +5,7 @@ buildDunePackage {
   inherit (ff-sig) version src;
 
   minimalOCamlVersion = "4.08";
+  duneVersion = "3";
 
   checkInputs = [
     alcotest
diff --git a/pkgs/development/ocaml-modules/ff/sig.nix b/pkgs/development/ocaml-modules/ff/sig.nix
index 503a26f6398..4043c45ceec 100644
--- a/pkgs/development/ocaml-modules/ff/sig.nix
+++ b/pkgs/development/ocaml-modules/ff/sig.nix
@@ -10,6 +10,8 @@ buildDunePackage rec {
     sha256 = "sha256-IoUH4awMOa1pm/t8E5io87R0TZsAxJjGWaXhXjn/w+Y=";
   };
 
+  duneVersion = "3";
+
   propagatedBuildInputs = [
     zarith
   ];