From 11e1b9ffbdfbb98c738db43967b3e2b856ae8ad7 Mon Sep 17 00:00:00 2001
From: Vincent Ambo <tazjin@tvl.su>
Date: Sat, 1 Feb 2025 13:37:20 +0300
Subject: [PATCH] feat(ops/nevsky): configure automatic GC module

Change-Id: I6c89129206773f4855cdda7ddc944ecb5437ec8e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/13061
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
---
 ops/machines/nevsky/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ops/machines/nevsky/default.nix b/ops/machines/nevsky/default.nix
index 1379eaa62..5be3b809d 100644
--- a/ops/machines/nevsky/default.nix
+++ b/ops/machines/nevsky/default.nix
@@ -235,6 +235,15 @@ in
 
   services.depot.builderball.enable = true;
 
+  # Automatically collect garbage from the Nix store.
+  services.depot.automatic-gc = {
+    enable = true;
+    interval = "1 hour";
+    diskThreshold = 200; # GiB
+    maxFreed = 420; # GiB
+    preserveGenerations = "60d";
+  };
+
   # Run a handful of Buildkite agents to support parallel builds.
   services.depot.buildkite = {
     enable = true;