{ lib, ... }:

let
  # --- Path naar je packages.conf, relatief aan dit bestand ---
  packagesConfPath = ./assets/system/apps/packages.conf;

  # --- Lees en split ---
  raw = builtins.readFile packagesConfPath;
  rawLines = lib.splitString "\n" raw;

  _guard = assert !(builtins.stringLength raw > 1 &&
                    builtins.length rawLines == builtins.stringLength raw); true;

  cleanLine = line:
    let
      noCR = lib.replaceStrings [ "\r" ] [ "" ] line;
      noComment = lib.head (lib.splitString "#" noCR);
    in
      lib.strings.trim noComment;

  entries = builtins.filter (l: l != "") (map cleanLine rawLines);

in
{
  # --- Flake NixOS module export ---
  flake.nixosModules.packages = { config, pkgs, lib, ... }:

  let
    # Resolve packages via pkgs
    resolvePkg = name:
      let
        parts = lib.splitString "." name;
        found = lib.attrByPath parts null pkgs;
      in
        if found == null then
          throw ''
            packages.nix: package not found in pkgs
            Token    : ${builtins.toJSON name}
            packages.conf : ${toString packagesConfPath}
          ''
        else
          found;

    packages = builtins.seq _guard (map resolvePkg entries);
  in
  {
    options.mySystem.system.packages.enable = lib.mkEnableOption "Enable packages from packages.conf";

    config = lib.mkIf (config.mySystem.system.packages.enable or false) {
      environment.systemPackages = packages;
    };
  };
}