From c470399a628169b35f77bf5aaa247bff02e668d1 Mon Sep 17 00:00:00 2001
From: Harinn <prinn.dev@pm.me>
Date: Wed, 20 May 2026 18:13:23 +0700
Subject: [PATCH] gaw: fix build with gcc 15

---
 pkgs/by-name/ga/gaw/package.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/by-name/ga/gaw/package.nix b/pkgs/by-name/ga/gaw/package.nix
index 0269c21f82d6..fc43efe26fbb 100644
--- a/pkgs/by-name/ga/gaw/package.nix
+++ b/pkgs/by-name/ga/gaw/package.nix
@@ -78,6 +78,9 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [ gtk3 ];
 
+  # K&R-style function declarations break under gcc 15's C23 default.
+  env.NIX_CFLAGS_COMPILE = "-std=gnu17";
+
   meta = {
     description = "Gtk Analog Wave viewer";
     mainProgram = "gaw";