From fd7ff5ba20bfe3c27a1b83d3341ed7ffaf001ede Mon Sep 17 00:00:00 2001
From: Rafael Ieda <git@ieda.me>
Date: Mon, 20 Oct 2025 16:23:04 -0300
Subject: [PATCH] stxxl: fix build with cmake4

---
 pkgs/by-name/st/stxxl/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/st/stxxl/package.nix b/pkgs/by-name/st/stxxl/package.nix
index d045a889a016..324e0c76115b 100644
--- a/pkgs/by-name/st/stxxl/package.nix
+++ b/pkgs/by-name/st/stxxl/package.nix
@@ -34,6 +34,11 @@ stdenv.mkDerivation rec {
     inherit parallelSupport;
   };
 
+  postPatch = ''
+    substituteInPlace CMakeLists.txt \
+      --replace-fail "cmake_minimum_required(VERSION 2.6.2 FATAL_ERROR)" "cmake_minimum_required(VERSION 3.10)"
+  '';
+
   meta = with lib; {
     description = "Implementation of the C++ standard template library STL for external memory (out-of-core) computations";
     homepage = "https://github.com/stxxl/stxxl";