chore: Cleanup old nix code and add helmfile experiments

shell.nix

@@ -1,25 +1,34 @@
 let
-  sources = import ./nix;
+  sources = import ./npins;
   system = builtins.currentSystem;
   pkgs = import sources.nixpkgs {
     inherit system;
     config = { };
-    overlays = [ ];
+    overlays = [ (import "${sources.gomod2nix}/overlay.nix") ];
   };
-  nixpkgs = sources.nixpkgs;
-  nixidy = import sources.nixidy { inherit nixpkgs; };
+  helmfile-nix = import sources.helmfile-nix { inherit pkgs; };
+  helmWrap =
+    with pkgs;
+    wrapHelm kubernetes-helm {
+      plugins = with kubernetes-helmPlugins; [
+        helm-diff
+        helm-git
+      ];
+    };
+  helmfileWrap = pkgs.helmfile-wrapped.override { inherit (helmWrap) pluginsDir; };
 in
-{
-  shell = pkgs.mkShellNoCC {
-    name = "clstr";
-    nativeBuildInputs = with pkgs; [
-      helmfile
-      nixidy.nixidy
-      npins
-      nixfmt-rfc-style
-      just
-      fzf
-    ];
-    NPINS_DIRECTORY = "nix";
-  };
+pkgs.mkShellNoCC {
+  name = "clstr";
+
+  packages = with pkgs; [
+    npins
+    nix-converter
+
+    # helm
+    helmWrap
+    helmfileWrap
+    helmfile-nix
+  ];
+
+  CLUSTER_NAME = "oceanbox";
 }