cext: remove Python 2 support
We still alias the Python 2 symbols. This will be cleaned up in a
separate commit.
Differential Revision: https://phab.mercurial-scm.org/D12227
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import changegroup, error, extensions
def abort(orig, *args, **kwargs):
raise error.Abort(_('this is an exercise'))
def uisetup(ui):
extensions.wrapfunction(changegroup, 'getbundler', abort)