⚗️🚧 (modules/flake) Update easy-hosts config and flake module args

modules/flake/systems.nix

@@ -0,0 +1,30 @@
+{
+  inputs,
+  namespace,
+  ...
+}:
+{
+  imports = [ inputs.easy-hosts.flakeModule ];
+
+  easyHosts = {
+    autoConstruct = true;
+    path = ../../systems;
+
+    shared = {
+      specialArgs = {
+        inherit namespace;
+      };
+    };
+
+    perClass = class: {
+      modules = [
+        # Import modules based on current classname.
+        ../${class}
+
+        (inputs.nixpkgs.lib.optionals (class == "nixos") [
+          inputs.home-manager.nixosModules.default
+        ])
+      ];
+    };
+  };
+}