From 375da09b236f6056cdfb96570ba46a927ad5b53b Mon Sep 17 00:00:00 2001
From: wrvsrx <wrvsrx@outlook.com>
Date: Tue, 7 Oct 2025 16:03:55 +0800
Subject: [PATCH] allegro: fix build with cmake4

---
 pkgs/development/libraries/allegro/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/allegro/default.nix b/pkgs/development/libraries/allegro/default.nix
index 024218415de0..02f26957af48 100644
--- a/pkgs/development/libraries/allegro/default.nix
+++ b/pkgs/development/libraries/allegro/default.nix
@@ -63,7 +63,10 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = [ "format" ];
 
-  cmakeFlags = [ "-DCMAKE_SKIP_RPATH=ON" ];
+  cmakeFlags = [
+    "-DCMAKE_SKIP_RPATH=ON"
+    "-DCMAKE_POLICY_VERSION_MINIMUM=3.5"
+  ];
 
   meta = with lib; {
     description = "Game programming library";