nixos: gc

nixos/msi/configuration.nix

@@ -18,6 +18,20 @@ in
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
 
+  # Nix package installer settings
+  nix = {
+    settings = {
+      # Collapse duplicates into a single hard-link during build
+      auto-optimise-store = true;
+    };
+    gc = {
+      # Automatically delete old objects and generations
+      automatic = true;
+      dates = "daily";
+      options = "--delete-older-than +5";
+    };
+  };
+
   networking.hostName = "nixos"; # Define your hostname.
   # Pick only one of the below networking options.
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.