refactor(nix): clarify flake module naming

nixos/nix/flake.nix

@@ -16,13 +16,16 @@
 
   outputs = inputs@{ flake-parts, import-tree, home-manager, ... }:
     let
-      mkFlake = flake-parts.lib.mkFlake;
+      flakeParts = flake-parts.lib.mkFlake;
 
-      flakeArgs = {
+      flakeModuleArguments = {
         inherit inputs;
       };
 
-      flakeConfig = {
+      mkFlakeWithModuleArguments =
+        flakeParts flakeModuleArguments;
+
+      flakeModule = {
         imports = [
           home-manager.flakeModules.home-manager
           (import-tree ./modules)
@@ -34,5 +37,5 @@
         ];
       };
     in
-      mkFlake flakeArgs flakeConfig;
+      mkFlakeWithModuleArguments flakeModule;
 }