From 1b7a46c24ed506533e29c20ac579bb57892e2bff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment?= <git@drawbu.dev>
Date: Sat, 18 Oct 2025 16:01:05 -0700
Subject: [PATCH] cpp-netlib: fix build failure with cmake 4

- CMake 4 is no longer retro compatible with versions < 3.5
---
 pkgs/by-name/cp/cpp-netlib/package.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/by-name/cp/cpp-netlib/package.nix b/pkgs/by-name/cp/cpp-netlib/package.nix
index faab71f0e3f3..f7c126fcc1b9 100644
--- a/pkgs/by-name/cp/cpp-netlib/package.nix
+++ b/pkgs/by-name/cp/cpp-netlib/package.nix
@@ -28,6 +28,14 @@ stdenvForCppNetlib.mkDerivation rec {
     ./0001-Compatibility-with-boost-1.83.patch
   ];
 
+  # CMake 2.8 is deprecated and is no longer supported by CMake > 4
+  # https://github.com/NixOS/nixpkgs/issues/445447
+  postPatch = ''
+    substituteInPlace CMakeLists.txt --replace-fail \
+      "cmake_minimum_required(VERSION 2.8)" \
+      "cmake_minimum_required(VERSION 3.10)"
+  '';
+
   nativeBuildInputs = [ cmake ];
   buildInputs = [
     # io_service.hpp has been removed in boost 1.87+