From c41d36b5b5e898c89d7cfeb4c373f57e3bbaf12b Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Sun, 12 Oct 2025 17:33:45 +0200
Subject: [PATCH] lpcnet: fix build with cmake 4

---
 pkgs/by-name/lp/lpcnet/package.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/by-name/lp/lpcnet/package.nix b/pkgs/by-name/lp/lpcnet/package.nix
index 75865e7abb69..8fd8f58bf052 100644
--- a/pkgs/by-name/lp/lpcnet/package.nix
+++ b/pkgs/by-name/lp/lpcnet/package.nix
@@ -47,6 +47,10 @@ stdenv.mkDerivation (finalAttrs: {
     codec2
   ];
 
+  cmakeFlags = [
+    (lib.cmakeFeature "CMAKE_POLICY_VERSION_MINIMUM" "3.5")
+  ];
+
   doCheck = true;
   nativeCheckInputs = [
     # NOTE: From some reason, the tests pass without this on x86_64-linux, but