move to mkModuleTree for host configuration

modules/programs/editors/emacs/module.nix

@@ -91,7 +91,10 @@
 in {
   config = mkIf cfg.enable {
     home-manager.users.${username} = {
-      home.packages = [custom-emacs];
+      home.packages = with pkgs; [
+        custom-emacs
+        clang-tools
+      ];
 
       services.emacs = {
         enable = true;

modules/style/module.nix

@@ -3,6 +3,7 @@
   inherit (config.modules.other.system) username;
 in {
   home-manager.users.${username} = {
+  imports = [./default.nix];
     home.pointerCursor = {
       # inherit the default values set in the options,
       # since these are the once I need on all my systems.

modules/system/hardware/default.nix

@@ -1 +0,0 @@
-_: {imports = [./bluetooth.nix ./graphics.nix];}

modules/system/hardware/module.nix

@@ -0,0 +1 @@
+_: {imports = [./bluetooth.nix ./graphics.nix];}