1 files changed, 28 insertions, 1 deletions
diff --git a/sys/core/storage.nix b/sys/core/storage.nix
index 6e2dab8..22abcd7 100644
--- a/sys/core/storage.nix
+++ b/sys/core/storage.nix
@@ -3,8 +3,35 @@ let
   cfg = config.sys.core.storage;
 in
 {
-  options.sys.core.storage.enable = lib.mkEnableOption "enables storage management";
+  options.sys.core.storage = {
+    enable = lib.mkEnableOption "enables storage management";
+    
+    keepDays = lib.mkOption {
+      type = lib.types.int;
+      default = 14;
+      description = "Number of days to keep old Nix generations before GC.";
+    };
+  };
   config = lib.mkIf cfg.enable {
     nix.settings.auto-optimise-store = true;
+    
+    nix.gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than ${toString cfg.keepDays}d";
+    };
+
+    services.fstrim.enable = true;
+
+    services.btrfs.autoScrub = {
+      enable = true;
+      interval = "monthly";
+      fileSystems = [ "/" ];
+    };
+
+    boot.tmp = {
+      useTmpfs = true;
+      tmpfsSize = "50%";
+    };
   };
 }