{ lib, ... }:
{
  imports =
    builtins.readDir ./shell
    |> builtins.attrNames
    |> builtins.filter (file: builtins.match ".*\\.nix" file != null)
    |> map (file: ./shell/${file});
  my.shell = {
    exercism.enable = lib.mkDefault false;
    multimedia.enable = lib.mkDefault false;
    tools.enable = lib.mkDefault false;
  };
}