{ lib, config, inputs, ... }:

let
  username = config.defaultUser or "henrov";

  modulesPath = ./generated/modules;

  imported = inputs.import-tree modulesPath;

  moduleSwitches = import ./assets/system/conf/modules.conf;

  # imported.imports is a LIST → filter it as a list
  enabledModules =
    builtins.filter (m:
      let
        name =
          if builtins.hasAttr "__file" m
          then builtins.baseNameOf m.__file
          else "unknown";
      in
        moduleSwitches.${name} or false
    ) imported.imports;

  # evaluate modules
  evaluatedModules =
    map (m:
      if builtins.isFunction m
      then m { inherit lib config; }
      else m
    ) enabledModules;

in
{
  networking.hostName = "traveldroid";
  system.stateVersion = "26.05";

  home-manager.users =
    lib.mkMerge evaluatedModules;

  # debug
  environment.variables.LOADED_MODULES =
    builtins.concatStringsSep "," (map (m:
      if builtins.hasAttr "__file" m
      then builtins.baseNameOf m.__file
      else "unknown"
    ) enabledModules);
}