From afa88a05b3bb2db11f4a47ea021f6464fbbcbe02 Mon Sep 17 00:00:00 2001
From: OPNA2608 <opna2608@protonmail.com>
Date: Wed, 15 Apr 2026 15:50:15 +0200
Subject: [PATCH] vgm2x: Pin to old C standard

Tries to typedef bool, which is no longer allowed in current standards.
---
 pkgs/by-name/vg/vgm2x/package.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/by-name/vg/vgm2x/package.nix b/pkgs/by-name/vg/vgm2x/package.nix
index 3afea59c59ac..cae08d43f195 100644
--- a/pkgs/by-name/vg/vgm2x/package.nix
+++ b/pkgs/by-name/vg/vgm2x/package.nix
@@ -22,6 +22,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = ''
     substituteInPlace Makefile \
+      --replace-fail 'CFLAGS=' 'CFLAGS=-std=gnu99 ' \
       --replace-fail 'pkg-config' "$PKG_CONFIG"
   '';