topic: reorder revset for faster evaluation
When running the revset on unfiltered repository, the mutable set can get huge.
So removing the obsolete changeset first provide a large speedup. This resolve
the performance regression we were seeing since the 6.7.0 release.
# Copyright 2017 FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
"""
Compatibility module
"""
from __future__ import absolute_import
from mercurial import obsolete
getmarkers = None
successorssets = None
try:
from mercurial import obsutil
getmarkers = getattr(obsutil, 'getmarkers', None)
successorssets = getattr(obsutil, 'successorssets', None)
except ImportError:
pass
if getmarkers is None:
getmarkers = obsolete.getmarkers
if successorssets is None:
successorssets = obsolete.successorssets