From 4c287d419654524162f8f1cfa3ebfbb2beeb24ae Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Wed, 8 Feb 2023 06:46:34 +0100
Subject: [PATCH] ocamlPackages.rresult: disable for OCaml < 4.07

---
 pkgs/development/ocaml-modules/rresult/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/ocaml-modules/rresult/default.nix b/pkgs/development/ocaml-modules/rresult/default.nix
index 3184e460a9a..0c1081159ed 100644
--- a/pkgs/development/ocaml-modules/rresult/default.nix
+++ b/pkgs/development/ocaml-modules/rresult/default.nix
@@ -1,5 +1,8 @@
 { stdenv, lib, fetchurl, ocaml, findlib, ocamlbuild, topkg, result }:
 
+lib.throwIfNot (lib.versionAtLeast ocaml.version "4.07")
+  "rresult is not available for OCaml ${ocaml.version}"
+
 stdenv.mkDerivation rec {
   pname = "ocaml${ocaml.version}-rresult";
   version = "0.7.0";