Commit 20de9219 authored by Godefroid Chapelle's avatar Godefroid Chapelle

make install of unpinned setuptools much quicker

by patching `pkg_resources.Distribution`.
parent 2aeca592
......@@ -4,7 +4,8 @@ Change History
2.13.4 (unreleased)
===================
- Nothing changed yet.
- Patch ``pkg_resources.Distribution`` to make install of unpinned versions quicker.
Most obvious with ``setuptools``.
2.13.3 (2020-02-11)
......
......@@ -13,6 +13,8 @@
##############################################################################
"""Buildout package
"""
import zc.buildout.patches # NOQA
class UserError(Exception):
"""Errors made by a user
......
##############################################################################
#
# Copyright (c) 2006 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
def patch_Distribution():
try:
from pkg_resources import _remove_md5_fragment
from pkg_resources import Distribution
if hasattr(Distribution, 'location'):
return
# prepare any Distribution built before monkeypatch
from pkg_resources import working_set
for dist in working_set:
dist._location = dist.location
dist._location_without_md5 = _remove_md5_fragment(dist.location)
def hashcmp(self):
without_md5 = getattr(self, '_location_without_md5', '')
return (
self.parsed_version,
self.precedence,
self.key,
without_md5,
self.py_version or '',
self.platform or '',
)
def get_location(self):
try:
result = self._location
except AttributeError:
result = ''
return result
def set_location(self, l):
self._location = l
self._location_without_md5 = _remove_md5_fragment(l)
setattr(Distribution, 'location', property(get_location, set_location))
setattr(Distribution, 'hashcmp', property(hashcmp))
except ImportError:
return
patch_Distribution()
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