From f766f1060735814ac683fe4bd4c93e354a503dd1 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Sat, 10 Feb 2024 11:51:49 +0000
Subject: [PATCH] modern-cpp-kafka: fix `gcc-13` build failure

Without the change build fails as
https://hydra.nixos.org/build/247616582:

    In file included from /build/source/tests/unit/TestKafkaMetrics.cc:1:
    /build/source/include/kafka/addons/KafkaMetrics.h:46:22: error: 'int64_t' is not a member of 'std'; did you mean 'int64_t'?
       46 |     ResultsType<std::int64_t> getInt(const KeysType& keys) const { return get<std::int64_t>(keys); }
          |                      ^~~~~~~
---
 pkgs/by-name/mo/modern-cpp-kafka/package.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/pkgs/by-name/mo/modern-cpp-kafka/package.nix b/pkgs/by-name/mo/modern-cpp-kafka/package.nix
index daa3396255bc..7986c63aab53 100644
--- a/pkgs/by-name/mo/modern-cpp-kafka/package.nix
+++ b/pkgs/by-name/mo/modern-cpp-kafka/package.nix
@@ -31,8 +31,21 @@ stdenv.mkDerivation rec {
       url = "https://github.com/morganstanley/modern-cpp-kafka/pull/222.patch";
       hash = "sha256-OjoSttnpgEwSZjCVKc888xJb5f1Dulu/rQqoGmqXNM4=";
     })
+    # Fix gcc-13 build failure:
+    #   https://github.com/morganstanley/modern-cpp-kafka/pull/229
+    (fetchpatch {
+      name = "add-pkg-config-cmake-config.patch";
+      url = "https://github.com/morganstanley/modern-cpp-kafka/commit/236f8f91f5c3ad6e1055a6f55cd3aebd218e1226.patch";
+      hash = "sha256-cy568TQUu08sadq79hDz9jMvDqiDjfr+1cLMxFWGm1Q=";
+    })
   ];
 
+  postPatch = ''
+    # Blanket -Werror tends to fail on minor unrelated warnings.
+    # Currently this fixes gcc-13 build failure.
+    substituteInPlace CMakeLists.txt --replace-fail '"-Werror"' ' '
+  '';
+
   nativeBuildInputs = [ cmake ];
   buildInputs = [ boost ];
   propagatedBuildInputs = [ rdkafka ];