mercurial/utils/hashutil.py

errors: format "abort: " text in a new Abort.format() method

This remove some duplication we had.

Differential Revision: https://phab.mercurial-scm.org/D9348

from __future__ import absolute_import

import hashlib

try:
    from ..thirdparty import sha1dc

    sha1 = sha1dc.sha1
except (ImportError, AttributeError):
    sha1 = hashlib.sha1