~lamont/maas/bug-1599223-2.0

##############################################################################

#

# 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.

#

##############################################################################

"""Bootstrap a buildout-based project

Simply run this script in a directory containing a buildout.cfg.

The script accepts buildout command-line options, so you can

use the -c option to specify an alternate configuration file.

"""

from optparse import OptionParser

import os

import shutil

import sys

import tempfile

__version__ = '2015-07-01'

# See zc.buildout's changelog if this version is up to date.

tmpeggs = tempfile.mkdtemp(prefix='bootstrap-')

usage = '''\

[DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options]

Bootstraps a buildout-based project.

Simply run this script in a directory containing a buildout.cfg, using the

Python that you want bin/buildout to use.

Note that by using --find-links to point to local resources, you can keep

this script from going over the network.

'''

parser = OptionParser(usage=usage)

parser.add_option("--version",

                  action="store_true", default=False,

                  help=("Return bootstrap.py version."))

parser.add_option("-t", "--accept-buildout-test-releases",

                  dest='accept_buildout_test_releases',

                  action="store_true", default=False,

                  help=("Normally, if you do not specify a --version, the "

                        "bootstrap script and buildout gets the newest "

                        "*final* versions of zc.buildout and its recipes and "

                        "extensions for you.  If you use this flag, "

                        "bootstrap and buildout will get the newest releases "

                        "even if they are alphas or betas."))

parser.add_option("-c", "--config-file",

                  help=("Specify the path to the buildout configuration "

                        "file to be used."))

parser.add_option("-f", "--find-links",

                  help=("Specify a URL to search for buildout releases"))

parser.add_option("--allow-site-packages",

                  action="store_true", default=False,

                  help=("Let bootstrap.py use existing site packages"))

parser.add_option("--buildout-version",

                  help="Use a specific zc.buildout version")

parser.add_option("--setuptools-version",

                  help="Use a specific setuptools version")

parser.add_option("--setuptools-to-dir",

                  help=("Allow for re-use of existing directory of "

                        "setuptools versions"))

options, args = parser.parse_args()

if options.version:

    print("bootstrap.py version %s" % __version__)

    sys.exit(0)

######################################################################

# load/install setuptools

try:

    from urllib.request import urlopen

except ImportError:

    from urllib2 import urlopen

ez = {}

if os.path.exists('ez_setup.py'):

    exec(open('ez_setup.py').read(), ez)

else:

    exec(urlopen('https://bootstrap.pypa.io/ez_setup.py').read(), ez)

if not options.allow_site_packages:

    # ez_setup imports site, which adds site packages

    # this will remove them from the path to ensure that incompatible versions

    # of setuptools are not in the path

    import site

    # inside a virtualenv, there is no 'getsitepackages'.

    # We can't remove these reliably

    if hasattr(site, 'getsitepackages'):

        for sitepackage_path in site.getsitepackages():

            # Strip all site-packages directories from sys.path that

            # are not sys.prefix; this is because on Windows

            # sys.prefix is a site-package directory.

            if sitepackage_path != sys.prefix:

                sys.path[:] = [x for x in sys.path

                               if sitepackage_path not in x]

setup_args = dict(to_dir=tmpeggs, download_delay=0)

if options.setuptools_version is not None:

    setup_args['version'] = options.setuptools_version

if options.setuptools_to_dir is not None:

    setup_args['to_dir'] = options.setuptools_to_dir

ez['use_setuptools'](**setup_args)

import setuptools

import pkg_resources

# This does not (always?) update the default working set.  We will

# do it.

for path in sys.path:

    if path not in pkg_resources.working_set.entries:

        pkg_resources.working_set.add_entry(path)

######################################################################

# Install buildout

ws = pkg_resources.working_set

setuptools_path = ws.find(

    pkg_resources.Requirement.parse('setuptools')).location

# Fix sys.path here as easy_install.pth added before PYTHONPATH

cmd = [sys.executable, '-c',

       'import sys; sys.path[0:0] = [%r]; ' % setuptools_path +

       'from setuptools.command.easy_install import main; main()',

       '-mZqNxd', tmpeggs]

find_links = os.environ.get(

    'bootstrap-testing-find-links',

    options.find_links or

    ('http://downloads.buildout.org/'

     if options.accept_buildout_test_releases else None)

    )

if find_links:

    cmd.extend(['-f', find_links])

requirement = 'zc.buildout'

version = options.buildout_version

if version is None and not options.accept_buildout_test_releases:

    # Figure out the most recent final version of zc.buildout.

    import setuptools.package_index

    _final_parts = '*final-', '*final'

    def _final_version(parsed_version):

        try:

            return not parsed_version.is_prerelease

        except AttributeError:

            # Older setuptools

            for part in parsed_version:

                if (part[:1] == '*') and (part not in _final_parts):

                    return False

            return True

    index = setuptools.package_index.PackageIndex(

        search_path=[setuptools_path])

    if find_links:

        index.add_find_links((find_links,))

    req = pkg_resources.Requirement.parse(requirement)

    if index.obtain(req) is not None:

        best = []

        bestv = None

        for dist in index[req.project_name]:

            distv = dist.parsed_version

            if _final_version(distv):

                if bestv is None or distv > bestv:

                    best = [dist]

                    bestv = distv

                elif distv == bestv:

                    best.append(dist)

        if best:

            best.sort()

            version = best[-1].version

if version:

    requirement = '=='.join((requirement, version))

cmd.append(requirement)

import subprocess

if subprocess.call(cmd) != 0:

    raise Exception(

        "Failed to execute command:\n%s" % repr(cmd)[1:-1])

######################################################################

# Import and run buildout

ws.add_entry(tmpeggs)

ws.require(requirement)

import zc.buildout.buildout

if not [a for a in args if '=' not in a]:

    args.append('bootstrap')

# if -c was provided, we push it back into args for buildout' main function

if options.config_file is not None:

    args[0:0] = ['-c', options.config_file]

zc.buildout.buildout.main(args)

shutil.rmtree(tmpeggs)