From bbe42235c8388053c93723e41b6c40db12ec317c Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Sat, 10 Feb 2024 16:34:01 +0000
Subject: [PATCH] openmw-tes3mp: fix `raknet` depend build on `gcc-13`

Without the change build fails on `master` as
https://cache.nixos.org/log/hhs17z23wxncxpbcgy1w98w5zh6xh8qw-raknet-unstable-2020-01-19.drv:

    In file included from /build/source/Source/Utils/_FindFirst.cpp:7:
    /build/source/Source/Utils/_FindFirst.h:50:15: error: 'intptr_t' was not declared in this scope
       50 | int _findnext(intptr_t h, _finddata_t *f);
          |               ^~~~~~~~
---
 pkgs/games/openmw/tes3mp.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/games/openmw/tes3mp.nix b/pkgs/games/openmw/tes3mp.nix
index 5662f2356833..5922b7214c51 100644
--- a/pkgs/games/openmw/tes3mp.nix
+++ b/pkgs/games/openmw/tes3mp.nix
@@ -27,6 +27,16 @@ let
       sha256 = "WIaJkSQnoOm9T7GoAwmWl7fNg79coIo/ILUsWcbH+lA=";
     };
 
+    patches = [
+      # gcc-13 build fix:
+      #   https://github.com/TES3MP/CrabNet/pull/18
+      (fetchpatch {
+        name = "gcc-13.patch";
+        url = "https://github.com/TES3MP/CrabNet/commit/3ec9a338a7cefd5cc751c9d29095cafa4c73be20.patch";
+        hash = "sha256-zE87icjX9GSnApgKQXj0K4IjlrReV/upFLjVgNYkNfM=";
+      })
+    ];
+
     cmakeFlags = [
       "-DCRABNET_ENABLE_DLL=OFF"
     ];