{ lib, pkgs, ... }: { imports = [ ./bash ./zsh ]; options.shell = { default = lib.mkOption { type = lib.types.enum [ "bash" "zsh" ]; description = "Default shell."; }; command = lib.mkOption { type = lib.types.str; description = "Command for the default shell."; }; alias = lib.mkOption { type = lib.types.attrs; description = "Shell aliases."; }; }; }