From 4e448b4d6b88f3b36b8e2c5e0e746405028cb19c Mon Sep 17 00:00:00 2001
From: Justin Buchanan <justbuchanan@gmail.com>
Date: Mon, 6 Oct 2025 12:29:19 -0700
Subject: [PATCH] virtualgl-lib: fix build against CMake >= 4.0

fixes #449216
---
 pkgs/tools/X11/virtualgl/lib.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/tools/X11/virtualgl/lib.nix b/pkgs/tools/X11/virtualgl/lib.nix
index de9df296f208..65433208c155 100644
--- a/pkgs/tools/X11/virtualgl/lib.nix
+++ b/pkgs/tools/X11/virtualgl/lib.nix
@@ -35,6 +35,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DVGL_SYSTEMFLTK=1"
     "-DTJPEG_LIBRARY=${libjpeg_turbo.out}/lib/libturbojpeg.so"
+    (lib.cmakeFeature "CMAKE_POLICY_VERSION_MINIMUM" "4.0")
   ];
 
   makeFlags = [ "PREFIX=$(out)" ];