{ lib, ... }:
{
  den.provides.unfree.description = ''
    A class generic aspect that enables unfree packages by name.

    Works for any class (nixos/darwin/homeManager,etc) on any host/user/home context.

    ## Usage

      den.aspects.my-laptop.includes = [ (den._.unfree [ "code" ]) ];

    It will dynamically provide a module for each class when accessed.
  '';

  den.provides.unfree.__functor =
    _self: allowed-names:
    # deadnix: allow
    { class, aspect-chain }:
    {
      ${class}.nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) allowed-names;
    };
}