From 27408723d9650376776c066084a9f52ffd62fd08 Mon Sep 17 00:00:00 2001
From: Yan Lin <github@yanlincs.com>
Date: Sat, 25 Oct 2025 14:58:02 +0200
Subject: [PATCH] add automatic garbage collect to vps host

---
 hosts/nixos/vps/system.nix | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/hosts/nixos/vps/system.nix b/hosts/nixos/vps/system.nix
index e302562..c1659d5 100644
--- a/hosts/nixos/vps/system.nix
+++ b/hosts/nixos/vps/system.nix
@@ -17,6 +17,20 @@
     device = "nodev"; # Required for EFI systems
     efiSupport = true;
     efiInstallAsRemovable = true; # Better compatibility with VPS
+    configurationLimit = 5; # Keep only 5 boot entries to save storage
+  };
+
+  # Automatic garbage collection to save storage
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 7d";
+  };
+
+  # Automatic store optimization to deduplicate files
+  nix.optimise = {
+    automatic = true;
+    dates = [ "weekly" ];
   };
 
   # Network configuration