{ config, lib, pkgs, ... }: let
  inherit (lib) concatStringsSep const flatten getAttr mapAttrsToList mkForce unique;
in {
  # users.defaultUserShell = pkgs.zsh;
  #
  # environment.sessionVariables.SHELLS = config.home-manager.users
  # |> mapAttrsToList (const <| getAttr "shellsByPriority")
  # |> flatten
  # |> map (drv: "${drv}${drv.shellPath}")
  # |> unique
  # |> concatStringsSep ":";
  #
  # environment.shellAliases = {
  #   ls = mkForce null;
  #   l  = mkForce null;
  # };
}