From 7b5a43954c8f586abe369a5c4e02749ed97b8ed0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Madeleine=20Sydney=20=C5=9Alaga?= <msyds@deertopia.net>
Date: Sat, 31 Jan 2026 16:23:04 -0700
Subject: [PATCH] feat(gc): init

---
 hosts/deertopia/configuration.nix |  1 +
 modules/nixos/gc.nix              | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 modules/nixos/gc.nix

diff --git a/hosts/deertopia/configuration.nix b/hosts/deertopia/configuration.nix
index cfbb5fc..f748d04 100644
--- a/hosts/deertopia/configuration.nix
+++ b/hosts/deertopia/configuration.nix
@@ -10,6 +10,7 @@
     filesystemType = "btrfs";
 
     stylix.enable = true;
+    gc.enable = true;
     openssh.enable = true;
     sydpkgs.overlay.enable = true;
 
diff --git a/modules/nixos/gc.nix b/modules/nixos/gc.nix
new file mode 100644
index 0000000..c7a66e8
--- /dev/null
+++ b/modules/nixos/gc.nix
@@ -0,0 +1,16 @@
+{ config, lib, pkgs, ... }:
+
+let cfg = config.sydnix.gc;
+in {
+  options.sydnix.gc = {
+    enable = lib.mkEnableOption "the automatic Nix garbage collector";
+  };
+
+  config = lib.mkIf cfg.enable {
+    nix.gc = {
+      automatic = true;
+      randomizedDelaySec = "14m";
+      options = "--delete-older-than 30d";
+    };
+  };
+}