From bf3aae019d05cce1447990d9f7937c68f08b7ab3 Mon Sep 17 00:00:00 2001
From: Harinn <prinn.dev@pm.me>
Date: Thu, 14 May 2026 22:45:39 +0700
Subject: [PATCH] geda: fix build with gcc 15

---
 pkgs/applications/science/electronics/geda/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/applications/science/electronics/geda/default.nix b/pkgs/applications/science/electronics/geda/default.nix
index b7d68cb99b38..50308e1d7080 100644
--- a/pkgs/applications/science/electronics/geda/default.nix
+++ b/pkgs/applications/science/electronics/geda/default.nix
@@ -35,6 +35,9 @@ stdenv.mkDerivation rec {
     "--without-libfam"
   ];
 
+  # gcc 15 C23 default breaks K&R () prototypes and errors on -Wincompatible-pointer-types
+  env.NIX_CFLAGS_COMPILE = "-std=gnu17";
+
   nativeBuildInputs = [
     autoreconfHook
     groff