def add_cli_options(parser, cfgfile=None, datadir=None):
"""Add common CLI options to the given arg parser."""
from . import config
config.add_cli_options(parser, cfgfile)
datadirhelp = "The directory in which to store data files."
if datadir:
datadirhelp += f" (default: {datadir!r})"
parser.add_option(
"-d",
"--data-path",
metavar="PATH",
default=datadir,
help=datadirhelp,
)