From 596789c0e813531142f7dadf4d7efc32a9a7b318 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B1=B1=E4=B8=8B?= <git@yamashit.ax>
Date: Fri, 24 Apr 2026 13:39:17 +0900
Subject: [PATCH] libetpan: fix Darwin build by setting `CFLAGS=-std=gnu17`

---
 pkgs/by-name/li/libetpan/package.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/by-name/li/libetpan/package.nix b/pkgs/by-name/li/libetpan/package.nix
index c9f3a1566389..bc1f6c6e9bd9 100644
--- a/pkgs/by-name/li/libetpan/package.nix
+++ b/pkgs/by-name/li/libetpan/package.nix
@@ -104,6 +104,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [ openssl ];
 
+  configureFlags = [ "CFLAGS=-std=gnu17" ];
+
   configureScript = "./autogen.sh";
 
   meta = {