From 400e6f08b6b034aa9e26e0f474b029d2e40f3cb9 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Wed, 3 May 2023 22:08:14 +0200
Subject: [PATCH] ocamlPackages.re: pin Dune to version 1 for OCaml < 4.08

---
 pkgs/development/ocaml-modules/re/default.nix | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/ocaml-modules/re/default.nix b/pkgs/development/ocaml-modules/re/default.nix
index 174324d49cfd..bbddba331ee3 100644
--- a/pkgs/development/ocaml-modules/re/default.nix
+++ b/pkgs/development/ocaml-modules/re/default.nix
@@ -13,14 +13,12 @@ let version_sha = if lib.versionAtLeast ocaml.version "4.08"
     };
 in
 
-buildDunePackage rec {
+buildDunePackage (rec {
   pname = "re";
   version = version_sha.version;
 
   minimalOCamlVersion = "4.02";
 
-  useDune2 = lib.versionAtLeast ocaml.version "4.08";
-
   src = fetchurl {
     url = "https://github.com/ocaml/ocaml-re/releases/download/${version}/re-${version}.tbz";
     sha256 = version_sha.sha256;
@@ -36,4 +34,6 @@ buildDunePackage rec {
     license = lib.licenses.lgpl2;
     maintainers = with lib.maintainers; [ vbgl ];
   };
-}
+} // lib.optionalAttrs (!lib.versionAtLeast ocaml.version "4.08") {
+  duneVersion = "1";
+})