From a53f6657ee5718bc6b49166421973a1ac152c9c7 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Tue, 20 Apr 2021 13:35:39 +0200
Subject: [PATCH] Remove gc-check-reachability setting

It no longer exists on nix master.
---
 hydra-module.nix | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/hydra-module.nix b/hydra-module.nix
index f9afd446..5e99f7d2 100644
--- a/hydra-module.nix
+++ b/hydra-module.nix
@@ -243,10 +243,6 @@ in
     nix.extraOptions = ''
       gc-keep-outputs = true
       gc-keep-derivations = true
-
-      # The default (`true') slows Nix down a lot since the build farm
-      # has so many GC roots.
-      gc-check-reachability = false
     '';
 
     systemd.services.hydra-init =