From 74c2ce699515ceffdd8c0616768c97c39777ad75 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Thu, 16 Oct 2025 06:49:02 +0200
Subject: [PATCH] =?UTF-8?q?ocamlPackages.visitors:=2020250212=20=E2=86=92?=
 =?UTF-8?q?=2020251010?=
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---
 .../ocaml-modules/visitors/default.nix         | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/pkgs/development/ocaml-modules/visitors/default.nix b/pkgs/development/ocaml-modules/visitors/default.nix
index b4459cfaae65..5eaf5eb853ee 100644
--- a/pkgs/development/ocaml-modules/visitors/default.nix
+++ b/pkgs/development/ocaml-modules/visitors/default.nix
@@ -5,22 +5,26 @@
   ppxlib,
   ppx_deriving,
   result,
+  version ? if lib.versionAtLeast ppxlib.version "0.36" then "20251010" else "20250212",
 }:
 
-buildDunePackage rec {
+buildDunePackage {
   pname = "visitors";
-  version = "20250212";
-
-  duneVersion = "3";
+  inherit version;
 
   minimalOCamlVersion = "4.08";
 
   src = fetchFromGitLab {
     owner = "fpottier";
-    repo = pname;
-    rev = version;
+    repo = "visitors";
+    tag = version;
     domain = "gitlab.inria.fr";
-    sha256 = "sha256-AFD4+vriwVGt6lzDyIDuIMadakcgB4j235yty5qqFgQ=";
+    hash =
+      {
+        "20250212" = "sha256-AFD4+vriwVGt6lzDyIDuIMadakcgB4j235yty5qqFgQ=";
+        "20251010" = "sha256-3CHXECMHf/UWtLvy7fiOaxx6EizRRtm9HpqRxcRjH3I=";
+      }
+      ."${version}";
   };
 
   propagatedBuildInputs = [