From 552cc19b4e6f66b02aad0c8a243aee50a1970cbf Mon Sep 17 00:00:00 2001
From: Rafael Ieda <git@ieda.me>
Date: Thu, 23 Oct 2025 21:22:18 -0300
Subject: [PATCH] rcon: fix build with cmake4

---
 pkgs/by-name/rc/rcon/package.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/by-name/rc/rcon/package.nix b/pkgs/by-name/rc/rcon/package.nix
index 48fd4373a3f8..813c63b646e0 100644
--- a/pkgs/by-name/rc/rcon/package.nix
+++ b/pkgs/by-name/rc/rcon/package.nix
@@ -33,6 +33,13 @@ stdenv.mkDerivation rec {
     pcre
   ];
 
+  postPatch = ''
+    substituteInPlace CMakeLists.txt \
+      --replace-fail "CMAKE_MINIMUM_REQUIRED(VERSION 3.1)" "cmake_minimum_required(VERSION 3.10)"
+    substituteInPlace tests/CMakeLists.txt \
+      --replace-fail "CMAKE_MINIMUM_REQUIRED(VERSION 3.0)" "cmake_minimum_required(VERSION 3.10)"
+  '';
+
   meta = with lib; {
     homepage = "https://github.com/n0la/rcon";
     description = "Source RCON client for command line";