modernized homeConfig call

modules/hosts/john-pc/default.nix

@@ -1,4 +1,4 @@
-{ self, inputs, ... }:
+{ withSystem, self, inputs, ... }:
 let
   username = "john";
   hostname = "john-pc-ubuntu";
@@ -46,7 +46,7 @@ in
       test-push
       selfPkgs.neovim-min
       # ${selfPkgs}.my-neovim
-      selfPkgs.richPrinter
+      # selfPkgs.richPrinter
       selfPkgs.janus-ca
     ];
 
@@ -109,10 +109,9 @@ in
     };
   };
 
-  flake.homeConfigurations."${hostname}" = inputs.home-manager.lib.homeManagerConfiguration {
-    pkgs = import inputs.nixpkgs { system = "x86_64-linux"; };
-    modules = with inputs.self.modules; [
-      homeManager."${hostname}"
-    ];
-  };
+  flake.homeConfigurations."john@john-pc-ubuntu" = withSystem "x86_64-linux" (ctx@{ config, inputs', ...}:
+    inputs.home-manager.lib.homeManagerConfiguration {
+      pkgs = inputs'.nixpkgs.legacyPackages;
+      modules = [ inputs.self.modules.homeManager."${hostname}" ];
+  });
 }