example refactor snowflake module system

nix/snow/flake/default.nix

@@ -0,0 +1,38 @@
+{
+  this,
+  inputs,
+  systems,
+  ...
+}: let
+  inherit (inputs.nixpkgs) lib;
+in {
+  # snow.flake
+  flake = flakeInputs: root: let
+    snowflake = lib.evalModules {
+      class = "snowflake";
+      # XXX: TODO: abort if inputs contains reserved names
+      specialArgs =
+        (flakeInputs
+          // {
+            inherit (this) snow;
+            inherit systems root;
+            inputs = flakeInputs;
+          })
+        # XXX: TODO:
+        # |> (x: builtins.removeAttrs x ["self" "nodes"]);
+        |> (x: builtins.removeAttrs x ["self"]);
+
+      modules = [
+        ./module.nix
+        ({config, ...}: {
+          _module.args = {
+            self = config;
+            # XXX: TODO:
+            # nodes = config.nodes.nodes;
+          };
+        })
+      ];
+    };
+  in
+    snowflake.config.outputs;
+}