From 550137e330ebb5e0d7b114f8af2e0d244e07dcb7 Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Fri, 9 Jun 2023 08:42:48 -0400
Subject: [PATCH] configd: fix build with clang 16

This is an additional fix for clang 16, which fails due to an undeclared
symbol. Adding `_DNS_SD_LIBDISPATCH` makes the symbol visible in
`dns_sd.h`, allowing the build to complete successfully.
---
 .../os-specific/darwin/apple-source-releases/configd/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/os-specific/darwin/apple-source-releases/configd/default.nix b/pkgs/os-specific/darwin/apple-source-releases/configd/default.nix
index d17db5a345a8..38b13f784a32 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/configd/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/configd/default.nix
@@ -13,6 +13,7 @@ appleDerivation' stdenv {
     NIX_CFLAGS_COMPILE = toString [
       "-ISystemConfiguration.framework/Headers"
       "-I${xnu}/Library/Frameworks/System.framework/Versions/B/PrivateHeaders"
+      "-D_DNS_SD_LIBDISPATCH" # Needed for DNSServiceSetDispatchQueue to be available
     ];
   };