From c277543b39d1a04891da20da10f3a1bc6edb640f Mon Sep 17 00:00:00 2001
From: Luke Bailey <baileylu@tcd.ie>
Date: Fri, 28 Nov 2025 18:11:13 +0000
Subject: [PATCH] mixRelease: Default to allowing local networking on darwin

---
 pkgs/development/beam-modules/mix-release.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/beam-modules/mix-release.nix b/pkgs/development/beam-modules/mix-release.nix
index 05d2aa81bae9..feda1738dbef 100644
--- a/pkgs/development/beam-modules/mix-release.nix
+++ b/pkgs/development/beam-modules/mix-release.nix
@@ -129,6 +129,8 @@ stdenv.mkDerivation (
     MIX_DEBUG = if enableDebugInfo then 1 else 0;
     HEX_OFFLINE = 1;
 
+    __darwinAllowLocalNetworking = true;
+
     DEBUG = if enableDebugInfo then 1 else 0; # for Rebar3 compilation
     # The API with `mix local.rebar rebar path` makes a copy of the binary
     # some older dependencies still use rebar.