switch modules/outputs names

nix/snow/flake/outputs/nixosModules.nix

@@ -0,0 +1,29 @@
+{
+  lib,
+  moduleLocation,
+  ...
+}: let
+  inherit
+    (lib)
+    mapAttrs
+    mkOption
+    types
+    ;
+in {
+  options = {
+    outputs.nixosModules = mkOption {
+      type = types.lazyAttrsOf types.deferredModule;
+      default = {};
+      apply = mapAttrs (k: v: {
+        _class = "nixos";
+        _file = "${toString moduleLocation}#nixosModules.${k}";
+        imports = [v];
+      });
+      description = ''
+        NixOS modules.
+
+        You may use this for reusable pieces of configuration, service modules, etc.
+      '';
+    };
+  };
+}