From 31debee9eace48299f13810196defd69408ffc3e Mon Sep 17 00:00:00 2001
From: Christoph Hollizeck <christoph.hollizeck@hey.com>
Date: Tue, 7 Oct 2025 09:49:22 +0200
Subject: [PATCH] qgnomeplatform: CMake4 fix

---
 pkgs/development/libraries/qgnomeplatform/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/libraries/qgnomeplatform/default.nix b/pkgs/development/libraries/qgnomeplatform/default.nix
index 120621df9e62..22ba9ead8c96 100644
--- a/pkgs/development/libraries/qgnomeplatform/default.nix
+++ b/pkgs/development/libraries/qgnomeplatform/default.nix
@@ -62,6 +62,9 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DGLIB_SCHEMAS_DIR=${glib.getSchemaPath gsettings-desktop-schemas}"
     "-DQT_PLUGINS_DIR=${placeholder "out"}/${qtbase.qtPluginPrefix}"
+
+    # Workaround CMake 4 compat
+    (lib.cmakeFeature "CMAKE_POLICY_VERSION_MINIMUM" "3.31")
   ]
   ++ lib.optionals useQt6 [
     "-DUSE_QT6=true"