From 7ce352496351311d9a4a8d53009dc9e8af8365ca Mon Sep 17 00:00:00 2001
From: Rafael Ieda <git@ieda.me>
Date: Wed, 22 Oct 2025 07:14:07 -0300
Subject: [PATCH] loudgain: fix build with cmake4

---
 pkgs/by-name/lo/loudgain/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/lo/loudgain/package.nix b/pkgs/by-name/lo/loudgain/package.nix
index 653440a5f11b..730dcd266526 100644
--- a/pkgs/by-name/lo/loudgain/package.nix
+++ b/pkgs/by-name/lo/loudgain/package.nix
@@ -48,6 +48,11 @@ stdenv.mkDerivation rec {
     zlib
   ];
 
+  postPatch = ''
+    substituteInPlace CMakeLists.txt \
+      --replace-fail "CMAKE_MINIMUM_REQUIRED(VERSION 2.8)" "cmake_minimum_required(VERSION 3.10)"
+  '';
+
   postInstall = ''
     sed -e "1aPATH=$out/bin:\$PATH" -i "$out/bin/rgbpm"
   '';