From 0292f13177a791a723d594fccd1e9dea085dfcee Mon Sep 17 00:00:00 2001
From: Guilhem Saurel <guilhem.saurel@laas.fr>
Date: Sun, 14 Sep 2025 10:51:27 +0200
Subject: [PATCH] openscenegraph: fix for CMake v4

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

diff --git a/pkgs/by-name/op/openscenegraph/package.nix b/pkgs/by-name/op/openscenegraph/package.nix
index b1f9dcb63d9a..5c893c5d5e20 100644
--- a/pkgs/by-name/op/openscenegraph/package.nix
+++ b/pkgs/by-name/op/openscenegraph/package.nix
@@ -135,6 +135,13 @@ stdenv.mkDerivation rec {
     })
   ];
 
+  # ref. https://github.com/openscenegraph/OpenSceneGraph/pull/1373
+  postPatch = ''
+    substituteInPlace CMakeLists.txt --replace-fail \
+      "CMAKE_MINIMUM_REQUIRED(VERSION 2.8.0 FATAL_ERROR)" \
+      "CMAKE_MINIMUM_REQUIRED(VERSION 3.10)"
+  '';
+
   cmakeFlags =
     lib.optional (!withApps) "-DBUILD_OSG_APPLICATIONS=OFF"
     ++ lib.optional withExamples "-DBUILD_OSG_EXAMPLES=ON";