From fac2bc3933620a6184e172b3e36e17c972abfe55 Mon Sep 17 00:00:00 2001
From: Louis Gesbert <louis.gesbert@ocamlpro.com>
Date: Mon, 12 Feb 2024 09:40:10 +0100
Subject: [PATCH] fix: do exercise recompilation correctly with `--replace`

Fixes #583
---
 src/utils/lwt_utils.ml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils/lwt_utils.ml b/src/utils/lwt_utils.ml
index 51ddabb91..a0f1a3bbb 100644
--- a/src/utils/lwt_utils.ml
+++ b/src/utils/lwt_utils.ml
@@ -40,7 +40,7 @@ let copy_tree src dst =
         mkdir_p dst >>= fun () ->
         let cmd =
           Array.concat
-            [[|"cp"; "-PR"|];
+            [[|"cp"; "-PpR"|];
              Array.map (Filename.concat src) files;
              [|dst|]]
         in