From f12fb9fbe6962b42c3d24e1d0af67b6b473a9463 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Sun, 31 Jan 2021 14:29:46 +0100
Subject: [PATCH] ocamlPackages.ocaml-migrate-parsetree: use Dune 2

---
 .../ocaml-modules/ocaml-migrate-parsetree/1.8.x.nix           | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/1.8.x.nix b/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/1.8.x.nix
index faadaf214f5..5d8d967bf4f 100644
--- a/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/1.8.x.nix
+++ b/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/1.8.x.nix
@@ -1,9 +1,11 @@
-{ lib, fetchFromGitHub, buildDunePackage, result, ppx_derivers }:
+{ lib, fetchFromGitHub, buildDunePackage, ocaml, result, ppx_derivers }:
 
 buildDunePackage rec {
    pname = "ocaml-migrate-parsetree";
    version = "1.8.0";
 
+   useDune2 = lib.versionAtLeast ocaml.version "4.08";
+
    src = fetchFromGitHub {
      owner = "ocaml-ppx";
      repo = pname;