From 28e9c221add566705fc38ac45f33bc87427f107f Mon Sep 17 00:00:00 2001
From: Drew Haven <periodic@blazestar.net>
Date: Fri, 25 Apr 2025 15:24:33 -0700
Subject: [PATCH] [nix] Adds GC

---
 system/features/gc.nix              |  8 ++++++++
 system/hosts/altair/default.nix     |  1 +
 system/hosts/mcp/default.nix        |  1 +
 system/hosts/vega/configuration.nix | 10 +---------
 system/hosts/vega/default.nix       |  1 +
 5 files changed, 12 insertions(+), 9 deletions(-)
 create mode 100644 system/features/gc.nix

diff --git a/system/features/gc.nix b/system/features/gc.nix
new file mode 100644
index 0000000..33627e4
--- /dev/null
+++ b/system/features/gc.nix
@@ -0,0 +1,8 @@
+{ ... }: {
+  # Automatic
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 30d";
+  };
+}
diff --git a/system/hosts/altair/default.nix b/system/hosts/altair/default.nix
index c908a19..40a7ce8 100644
--- a/system/hosts/altair/default.nix
+++ b/system/hosts/altair/default.nix
@@ -4,6 +4,7 @@
     ./configuration.nix
     ./hardware-configuration.nix
     ../../authorized-keys.nix
+    ../../features/gc.nix
     ../../features/gui.nix
   ];
 
diff --git a/system/hosts/mcp/default.nix b/system/hosts/mcp/default.nix
index af5aff3..a8bde06 100644
--- a/system/hosts/mcp/default.nix
+++ b/system/hosts/mcp/default.nix
@@ -5,6 +5,7 @@
     ./hardware-configuration.nix
     ../../authorized-keys.nix
     inputs.sops-nix.nixosModules.sops
+    ../../features/gc.nix
   ];
 
   nixpkgs.config.allowUnfree = true;
diff --git a/system/hosts/vega/configuration.nix b/system/hosts/vega/configuration.nix
index 46cb51c..c4b27eb 100644
--- a/system/hosts/vega/configuration.nix
+++ b/system/hosts/vega/configuration.nix
@@ -1,12 +1,4 @@
-# Edit this configuration file to define what should be installed on
-# your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
-
-{
-  pkgs,
-  ...
-}:
-
+{ pkgs, ... }:
 {
   networking.hostName = "vega"; # Define your hostname.
 
diff --git a/system/hosts/vega/default.nix b/system/hosts/vega/default.nix
index c908a19..40a7ce8 100644
--- a/system/hosts/vega/default.nix
+++ b/system/hosts/vega/default.nix
@@ -4,6 +4,7 @@
     ./configuration.nix
     ./hardware-configuration.nix
     ../../authorized-keys.nix
+    ../../features/gc.nix
     ../../features/gui.nix
   ];