From 43dc4612b034fb8d6a021f17bc402d9c03ad5680 Mon Sep 17 00:00:00 2001
From: Guillaume Girol <symphorien+git@xlumurb.eu>
Date: Sun, 24 Apr 2022 12:00:00 +0000
Subject: [PATCH] ocamlPackages.stdune: don't be incompatible with our version
 of csexp

upstream does that as well:
https://github.com/anmonteiro/nix-overlays/blob/8bc4e7e5f4d7579d5875ec1c11f5f20bb632b1fc/ocaml/dune/stdune.nix#L11

needed for ocaml-lsp
---
 pkgs/development/ocaml-modules/stdune/default.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/ocaml-modules/stdune/default.nix b/pkgs/development/ocaml-modules/stdune/default.nix
index fd1e4f987b4..5e0b798772d 100644
--- a/pkgs/development/ocaml-modules/stdune/default.nix
+++ b/pkgs/development/ocaml-modules/stdune/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildDunePackage, dune_3, dyn, ordering }:
+{ lib, buildDunePackage, dune_3, dyn, ordering, csexp }:
 
 buildDunePackage {
   pname = "stdune";
@@ -7,7 +7,11 @@ buildDunePackage {
 
   dontAddPrefix = true;
 
-  propagatedBuildInputs = [ dyn ordering ];
+  propagatedBuildInputs = [ dyn ordering csexp ];
+
+  preBuild = ''
+    rm -r vendor/csexp
+  '';
 
   meta = dune_3.meta // {
     description = "Dune's unstable standard library";