flake.nix: move main flake into config block

grrr why do people always insist on dumping options into the main block
of the module

flake.nix

@@ -1,3 +1,4 @@
+# vim: set foldmethod=marker:
 {
   description = "NixOS Configuration";
 
@@ -109,11 +110,15 @@
     flake-parts,
     ...
   } @ inputs:
-    flake-parts.lib.mkFlake {inherit inputs;} ({
+    flake-parts.lib.mkFlake {inherit inputs;} (
+      {
         inputs,
         self,
+        config,
+        lib,
         ...
       } @ flakeArgs: let
+        # {{{
         inherit (inputs) nixpkgs nixpkgs-unstable;
         inherit (self) outputs;
         # inputs is already defined
@@ -400,7 +405,19 @@
               }
               // builtins.removeAttrs args
               ["system" "nixpkgs" "home-manager" "modules" "username" "homeDirectory" "stateVersion" "entrypoint" "config"]);
+        # }}}
       in {
+        # flake-parts imports
+        imports = [
+          ./flake
+        ];
+
+        config = {
+          # flake-parts systems (still uses nix-systems)
+          systems = import inputs.systems;
+
+          debug = lib.mkDefault true;
+
           flake = {
             # for repl debugging via :lf .
             inherit inputs vars;
@@ -555,8 +572,9 @@
               };
             };
           };
-        systems = (import inputs.systems);
-      }); # end outputs
+        };
+      }
+    ); # end outputs
 }
 # end flake
 

flake/default.nix

@@ -0,0 +1,6 @@
+{ ... }:
+{
+  imports = [
+    ./packages.nix
+  ];
+}

flake/packages.nix

@@ -0,0 +1,2 @@
+{ ... }: {
+}