From 070d240eb98688981be614e133b23aadead5f2cd Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Mon, 27 Apr 2026 22:01:06 +0200
Subject: [PATCH] ocamlPackages.httpcats: drop (implicit) dependency on rresult

---
 pkgs/development/ocaml-modules/httpcats/default.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/development/ocaml-modules/httpcats/default.nix b/pkgs/development/ocaml-modules/httpcats/default.nix
index 74b1578935d4..6c5b39077b17 100644
--- a/pkgs/development/ocaml-modules/httpcats/default.nix
+++ b/pkgs/development/ocaml-modules/httpcats/default.nix
@@ -1,4 +1,5 @@
 {
+  fetchpatch,
   fetchFromGitHub,
   buildDunePackage,
   lib,
@@ -28,6 +29,13 @@ buildDunePackage (finalAttrs: {
     hash = "sha256-I7u/n49WOnpc0EaagsjC4Ts/kz0Xj6YHZv6+QZKLrC4=";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/robur-coop/httpcats/commit/d8787555d4831e0488780d42bd2c65de662d1d38.patch";
+      hash = "sha256-Mqam6Sxd2kkkHDm459u9uerifuHbvZUVy2khQffvvCE=";
+    })
+  ];
+
   propagatedBuildInputs = [
     h2
     h1