From e4ee5e2eb57eb663944045a0193347a06eda1f7c Mon Sep 17 00:00:00 2001
From: eldritch horrors <pennae@lix.systems>
Date: Sun, 28 Sep 2025 00:02:20 +0200
Subject: [PATCH] testing: disable substitution in f2

mirrors f1. much faster.

Change-Id: I38bbbd5b26220f480afe76ef9302e5c90f21507a
---
 tests/functional2/testlib/fixtures/nix.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/functional2/testlib/fixtures/nix.py b/tests/functional2/testlib/fixtures/nix.py
index f794ecf9a..07a4f9e09 100644
--- a/tests/functional2/testlib/fixtures/nix.py
+++ b/tests/functional2/testlib/fixtures/nix.py
@@ -46,6 +46,9 @@ class NixSettings:
         config = dedent(f"""
             show-trace = true
             sandbox = true
+            # explicitly disable substitution by default, otherwise we may attempt to contact
+            # substituters and slow down many tests with pointless connection retry timeouts.
+            substituters =
             extra-sandbox-paths = {" ".join(env.path.to_sandbox_paths())}
         """)
         # Note: newline at the end is required due to nix being nix;