import os.path
import sys
xonsh_ext_dir = os.path.expanduser('~/.xonsh')
if os.path.isdir(xonsh_ext_dir):
    sys.path.append(xonsh_ext_dir)

from history_couchdb import CouchDBHistory
$XONSH_HISTORY_BACKEND = CouchDBHistory

$PL_RPROMPT = '!' # recommended if you use powerline, as {history} is slow