refactor(k8s): move module options to 'default.nix'

home/modules/k8s/default.nix

@@ -9,13 +9,22 @@ let
   cfg = config.k8s;
 in
 {
+  options.k8s = {
+    enable = lib.mkEnableOption "k8s";
+
+    helm = {
+      enable = lib.mkEnableOption "helm";
+    };
+    k9s = {
+      enable = lib.mkEnableOption "k9s";
+    };
+  };
+
   imports = [
     ./helm.nix
     ./k9s.nix
   ];
 
-  options.k8s.enable = lib.mkEnableOption "k8s";
-
   config = lib.mkIf cfg.enable {
     k8s.helm.enable = lib.mkDefault true;
     k8s.k9s.enable = lib.mkDefault true;

home/modules/k8s/helm.nix

@@ -5,13 +5,8 @@
   ...
 }:
 
-let
-  cfg = config.k8s.helm;
-in
 {
-  options.k8s.helm.enable = lib.mkEnableOption "helm";
-
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.k8s.helm.enable {
     home.packages = with pkgs; [
       (wrapHelm kubernetes-helm {
         plugins = with kubernetes-helmPlugins; [

home/modules/k8s/k9s.nix

@@ -4,13 +4,8 @@
   ...
 }:
 
-let
-  cfg = config.k8s.k9s;
-in
 {
-  options.k8s.k9s.enable = lib.mkEnableOption "k9s";
-
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.k8s.k9s.enable {
     programs.k9s = {
       enable = true;
       settings.k9s = {