From 101d3d6966858333baea7c5c255a4eaa2c16d2a5 Mon Sep 17 00:00:00 2001
From: leiserfg <leiserfg@gmail.com>
Date: Sun, 12 Oct 2025 17:55:41 +0200
Subject: [PATCH] glslviewer: fix build with cmake 4

---
 pkgs/by-name/gl/glslviewer/package.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/by-name/gl/glslviewer/package.nix b/pkgs/by-name/gl/glslviewer/package.nix
index cc43264d1093..71b4724cd8a3 100644
--- a/pkgs/by-name/gl/glslviewer/package.nix
+++ b/pkgs/by-name/gl/glslviewer/package.nix
@@ -42,6 +42,7 @@ stdenv.mkDerivation rec {
     ffmpeg
   ];
 
+  cmakeFlags = [ "-DCMAKE_POLICY_VERSION_MINIMUM=3.20" ];
   meta = with lib; {
     description = "Live GLSL coding renderer";
     homepage = "https://patriciogonzalezvivo.com/2015/glslViewer/";