From e1fe267f096535fb5d8ea7ce666e13da45a98f18 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Thu, 19 Nov 2020 07:36:27 +0100
Subject: [PATCH] ocamlPackages.io-page: use Dune 2

---
 pkgs/development/ocaml-modules/io-page/default.nix | 1 +
 pkgs/development/ocaml-modules/io-page/unix.nix    | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/ocaml-modules/io-page/default.nix b/pkgs/development/ocaml-modules/io-page/default.nix
index 31ae0cfc19ed..46908369e571 100644
--- a/pkgs/development/ocaml-modules/io-page/default.nix
+++ b/pkgs/development/ocaml-modules/io-page/default.nix
@@ -4,6 +4,7 @@ buildDunePackage rec {
   pname = "io-page";
   version = "2.3.0";
 
+  useDune2 = true;
   minimumOCamlVersion = "4.02.3";
 
   src = fetchurl {
diff --git a/pkgs/development/ocaml-modules/io-page/unix.nix b/pkgs/development/ocaml-modules/io-page/unix.nix
index b3f7f878b276..843451b30866 100644
--- a/pkgs/development/ocaml-modules/io-page/unix.nix
+++ b/pkgs/development/ocaml-modules/io-page/unix.nix
@@ -3,7 +3,7 @@
 buildDunePackage {
   pname = "io-page-unix";
 
-  inherit (io-page) version src minimumOCamlVersion;
+  inherit (io-page) version src useDune2 minimumOCamlVersion;
 
   propagatedBuildInputs = [ cstruct io-page ];
   checkInputs = [ ounit ];