From 65880ecb5867da032674edf220c13ffd89b20861 Mon Sep 17 00:00:00 2001
From: Kristoffer Dalby <kristoffer@dalby.cc>
Date: Fri, 6 Mar 2026 10:37:09 +0000
Subject: [PATCH] nix: disable external DERP URL fetch in VM test

Explicitly set derp.urls to an empty list in the NixOS VM test,
matching the upstream nixpkgs test. The VMs have no internet
access, so fetching the default Tailscale DERP map would silently
fail and add unnecessary timeout delay to the test run.
---
 nix/tests/headscale.nix | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/nix/tests/headscale.nix b/nix/tests/headscale.nix
index 7dc93870..819626b7 100644
--- a/nix/tests/headscale.nix
+++ b/nix/tests/headscale.nix
@@ -38,10 +38,13 @@ in
             settings = {
               server_url = "https://headscale";
               ip_prefixes = [ "100.64.0.0/10" ];
-              derp.server = {
-                enabled = true;
-                region_id = 999;
-                stun_listen_addr = "0.0.0.0:${toString stunPort}";
+              derp = {
+                server = {
+                  enabled = true;
+                  region_id = 999;
+                  stun_listen_addr = "0.0.0.0:${toString stunPort}";
+                };
+                urls = [ ];
               };
               dns = {
                 base_domain = "tailnet";