docs: def setup():
      """Walk the user though the Wallace setup."""
      # Create the Wallace config file if it does not already exist.
      config_name = ".wallaceconfig"
      config_path = os.path.join(os.path.expanduser("~"), config_name)
  
      if os.path.isfile(config_path):
          log("Wallace config file already exists.", chevrons=False)
  
      else:
          log("Creating Wallace config file at ~/.wallaceconfig...",
              chevrons=False)
          wallace_module_path = os.path.dirname(os.path.realpath(__file__))
          src = os.path.join(wallace_module_path, "config", config_name)
          shutil.copyfile(src, config_path)