From c486b14861116a214c0d72eb7fba17e95dd3f9b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Romildo?= <malaquias@gmail.com>
Date: Sun, 23 Oct 2022 11:23:25 -0300
Subject: [PATCH] ocamlPackages.ppx_deriving_cmdliner: compatibility with
 ppxlib-0.26

---
 .../ocaml-modules/ppx_deriving_cmdliner/default.nix    | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/development/ocaml-modules/ppx_deriving_cmdliner/default.nix b/pkgs/development/ocaml-modules/ppx_deriving_cmdliner/default.nix
index 195b53a5fe12..3350181dda45 100644
--- a/pkgs/development/ocaml-modules/ppx_deriving_cmdliner/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_deriving_cmdliner/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildDunePackage
 , fetchFromGitHub
+, fetchpatch
 , alcotest
 , cmdliner
 , ppx_deriving
@@ -20,6 +21,15 @@ buildDunePackage rec {
     sha256 = "sha256-/22KLQnxu3e2ZSca6ZLxTJDfv/rsmgCUkJnZC0RwRi8";
   };
 
+  patches = [
+    # Ppxlib.0.26.0 compatibility
+    # remove when a new version is released
+    (fetchpatch {
+      url = "https://patch-diff.githubusercontent.com/raw/hammerlab/ppx_deriving_cmdliner/pull/50.patch";
+      sha256 = "sha256-FfUfEAsyobwZ99+s5sFAaCE6Xgx7jLr/q79OxDbGcvQ=";
+    })
+  ];
+
   propagatedBuildInputs = [
     cmdliner
     ppx_deriving