New modules for container managment

modules/commons.nix

@@ -0,0 +1,40 @@
+{ config, lib, ... }:
+let
+  cfg = config.commons;
+in
+{
+  options.commons = {
+    enable = lib.mkEnableOption "Enable commons stuff that are always nice to have";
+
+    allowReboot = lib.mkOption {
+      default = false;
+      type = lib.types.bool;
+      description = config.system.autoUpgrade.allowReboot;
+    };
+
+  };
+
+  config = lib.mkIf cfg.enable {
+
+    # Auto update
+    system.autoUpgrade = {
+      enable = true;
+      randomizedDelaySec = "10min";
+      allowReboot = cfg.allowReboot;
+    };
+
+    nix = {
+
+      settings.experimental-features = [ "nix-command" "flakes" ];
+
+      gc = {
+        # Auto delete old generations
+        automatic = true;
+        options = "--delete-older-than 2d";
+      };
+    };
+
+    nixpkgs.config.allowUnfree = true;
+
+  };
+}