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pfwbged.buildout
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working bootstrap.py

This commit is contained in:
Vincent Fretin 2013-07-09 10:19:02 +02:00
parent 8cd2e1436d
commit d8f3b41ef1
1 changed files with 165 additions and 53 deletions
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218
bootstrap.py
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@ -18,10 +18,75 @@ The script accepts buildout command-line options, so you can
use the -c option to specify an alternate configuration file. use the -c option to specify an alternate configuration file.
""" """
import os, shutil, sys, tempfile import os, shutil, sys, tempfile, urllib, urllib2, subprocess
from optparse import OptionParser from optparse import OptionParser
tmpeggs = tempfile.mkdtemp() if sys.platform == 'win32':
def quote(c):
if ' ' in c:
return '"%s"' % c # work around spawn lamosity on windows
else:
return c
else:
quote = str
# See zc.buildout.easy_install._has_broken_dash_S for motivation and comments.
stdout, stderr = subprocess.Popen(
[sys.executable, '-Sc',
'try:\n'
' import ConfigParser\n'
'except ImportError:\n'
' print 1\n'
'else:\n'
' print 0\n'],
stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
has_broken_dash_S = bool(int(stdout.strip()))
# In order to be more robust in the face of system Pythons, we want to
# run without site-packages loaded. This is somewhat tricky, in
# particular because Python 2.6's distutils imports site, so starting
# with the -S flag is not sufficient. However, we'll start with that:
if not has_broken_dash_S and 'site' in sys.modules:
# We will restart with python -S.
args = sys.argv[:]
args[0:0] = [sys.executable, '-S']
args = map(quote, args)
os.execv(sys.executable, args)
# Now we are running with -S. We'll get the clean sys.path, import site
# because distutils will do it later, and then reset the path and clean
# out any namespace packages from site-packages that might have been
# loaded by .pth files.
clean_path = sys.path[:]
import site # imported because of its side effects
sys.path[:] = clean_path
for k, v in sys.modules.items():
if k in ('setuptools', 'pkg_resources') or (
hasattr(v, '__path__') and
len(v.__path__) == 1 and
not os.path.exists(os.path.join(v.__path__[0], '__init__.py'))):
# This is a namespace package. Remove it.
sys.modules.pop(k)
is_jython = sys.platform.startswith('java')
setuptools_source = 'http://peak.telecommunity.com/dist/ez_setup.py'
distribute_source = 'http://python-distribute.org/distribute_setup.py'
# parsing arguments
def normalize_to_url(option, opt_str, value, parser):
if value:
if '://' not in value: # It doesn't smell like a URL.
value = 'file://%s' % (
urllib.pathname2url(
os.path.abspath(os.path.expanduser(value))),)
if opt_str == '--download-base' and not value.endswith('/'):
# Download base needs a trailing slash to make the world happy.
value += '/'
else:
value = None
name = opt_str[2:].replace('-', '_')
setattr(parser.values, name, value)
usage = '''\ usage = '''\
[DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options] [DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options]
@ -36,8 +101,26 @@ local resources, you can keep this script from going over the network.
''' '''
parser = OptionParser(usage=usage) parser = OptionParser(usage=usage)
parser.add_option("-v", "--version", help="use a specific zc.buildout version") parser.add_option("-v", "--version", dest="version",
help="use a specific zc.buildout version")
parser.add_option("-d", "--distribute",
action="store_true", dest="use_distribute", default=False,
help="Use Distribute rather than Setuptools.")
parser.add_option("--setup-source", action="callback", dest="setup_source",
callback=normalize_to_url, nargs=1, type="string",
help=("Specify a URL or file location for the setup file. "
"If you use Setuptools, this will default to " +
setuptools_source + "; if you use Distribute, this "
"will default to " + distribute_source + "."))
parser.add_option("--download-base", action="callback", dest="download_base",
callback=normalize_to_url, nargs=1, type="string",
help=("Specify a URL or directory for downloading "
"zc.buildout and either Setuptools or Distribute. "
"Defaults to PyPI."))
parser.add_option("--eggs",
help=("Specify a directory for storing eggs. Defaults to "
"a temporary directory that is deleted when the "
"bootstrap script completes."))
parser.add_option("-t", "--accept-buildout-test-releases", parser.add_option("-t", "--accept-buildout-test-releases",
dest='accept_buildout_test_releases', dest='accept_buildout_test_releases',
action="store_true", default=False, action="store_true", default=False,
@ -47,38 +130,46 @@ parser.add_option("-t", "--accept-buildout-test-releases",
"extensions for you. If you use this flag, " "extensions for you. If you use this flag, "
"bootstrap and buildout will get the newest releases " "bootstrap and buildout will get the newest releases "
"even if they are alphas or betas.")) "even if they are alphas or betas."))
parser.add_option("-c", "--config-file", parser.add_option("-c", None, action="store", dest="config_file",
help=("Specify the path to the buildout configuration " help=("Specify the path to the buildout configuration "
"file to be used.")) "file to be used."))
parser.add_option("-f", "--find-links",
help=("Specify a URL to search for buildout releases"))
options, args = parser.parse_args() options, args = parser.parse_args()
###################################################################### if options.eggs:
# load/install distribute eggs_dir = os.path.abspath(os.path.expanduser(options.eggs))
else:
eggs_dir = tempfile.mkdtemp()
if options.setup_source is None:
if options.use_distribute:
options.setup_source = distribute_source
else:
options.setup_source = setuptools_source
if options.accept_buildout_test_releases:
args.insert(0, 'buildout:accept-buildout-test-releases=true')
to_reload = False
try: try:
import pkg_resources, setuptools import pkg_resources
import setuptools # A flag. Sometimes pkg_resources is installed alone.
if not hasattr(pkg_resources, '_distribute'): if not hasattr(pkg_resources, '_distribute'):
to_reload = True
raise ImportError raise ImportError
except ImportError: except ImportError:
ez_code = urllib2.urlopen(
options.setup_source).read().replace('\r\n', '\n')
ez = {} ez = {}
exec ez_code in ez
try: setup_args = dict(to_dir=eggs_dir, download_delay=0)
from urllib.request import urlopen if options.download_base:
except ImportError: setup_args['download_base'] = options.download_base
from urllib2 import urlopen if options.use_distribute:
setup_args['no_fake'] = True
exec(urlopen('http://python-distribute.org/distribute_setup.py').read(), ez) if sys.version_info[:2] == (2, 4):
setup_args = dict(to_dir=tmpeggs, download_delay=0, no_fake=True) setup_args['version'] = '0.6.32'
ez['use_setuptools'](**setup_args) ez['use_setuptools'](**setup_args)
if 'pkg_resources' in sys.modules:
if to_reload: reload(sys.modules['pkg_resources'])
reload(pkg_resources)
import pkg_resources import pkg_resources
# This does not (always?) update the default working set. We will # This does not (always?) update the default working set. We will
# do it. # do it.
@ -86,26 +177,33 @@ except ImportError:
if path not in pkg_resources.working_set.entries: if path not in pkg_resources.working_set.entries:
pkg_resources.working_set.add_entry(path) pkg_resources.working_set.add_entry(path)
###################################################################### cmd = [quote(sys.executable),
# Install buildout '-c',
quote('from setuptools.command.easy_install import main; main()'),
'-mqNxd',
quote(eggs_dir)]
ws = pkg_resources.working_set if not has_broken_dash_S:
cmd.insert(1, '-S')
cmd = [sys.executable, '-c', find_links = options.download_base
'from setuptools.command.easy_install import main; main()', if not find_links:
'-mZqNxd', tmpeggs] find_links = os.environ.get('bootstrap-testing-find-links')
if not find_links and options.accept_buildout_test_releases:
find_links = os.environ.get( find_links = 'http://downloads.buildout.org/'
'bootstrap-testing-find-links',
options.find_links or
('http://downloads.buildout.org/'
if options.accept_buildout_test_releases else None)
)
if find_links: if find_links:
cmd.extend(['-f', find_links]) cmd.extend(['-f', quote(find_links)])
distribute_path = ws.find( if options.use_distribute:
pkg_resources.Requirement.parse('distribute')).location setup_requirement = 'distribute'
else:
setup_requirement = 'setuptools'
ws = pkg_resources.working_set
setup_requirement_path = ws.find(
pkg_resources.Requirement.parse(setup_requirement)).location
env = dict(
os.environ,
PYTHONPATH=setup_requirement_path)
requirement = 'zc.buildout' requirement = 'zc.buildout'
version = options.version version = options.version
@ -113,13 +211,14 @@ if version is None and not options.accept_buildout_test_releases:
# Figure out the most recent final version of zc.buildout. # Figure out the most recent final version of zc.buildout.
import setuptools.package_index import setuptools.package_index
_final_parts = '*final-', '*final' _final_parts = '*final-', '*final'
def _final_version(parsed_version): def _final_version(parsed_version):
for part in parsed_version: for part in parsed_version:
if (part[:1] == '*') and (part not in _final_parts): if (part[:1] == '*') and (part not in _final_parts):
return False return False
return True return True
index = setuptools.package_index.PackageIndex( index = setuptools.package_index.PackageIndex(
search_path=[distribute_path]) search_path=[setup_requirement_path])
if find_links: if find_links:
index.add_find_links((find_links,)) index.add_find_links((find_links,))
req = pkg_resources.Requirement.parse(requirement) req = pkg_resources.Requirement.parse(requirement)
@ -128,6 +227,8 @@ if version is None and not options.accept_buildout_test_releases:
bestv = None bestv = None
for dist in index[req.project_name]: for dist in index[req.project_name]:
distv = dist.parsed_version distv = dist.parsed_version
if distv >= pkg_resources.parse_version('2dev'):
continue
if _final_version(distv): if _final_version(distv):
if bestv is None or distv > bestv: if bestv is None or distv > bestv:
best = [dist] best = [dist]
@ -137,29 +238,40 @@ if version is None and not options.accept_buildout_test_releases:
if best: if best:
best.sort() best.sort()
version = best[-1].version version = best[-1].version
if version: if version:
requirement = '=='.join((requirement, version)) requirement += '=='+version
else:
requirement += '<2dev'
cmd.append(requirement) cmd.append(requirement)
import subprocess if is_jython:
if subprocess.call(cmd, env=dict(os.environ, PYTHONPATH=distribute_path)) != 0: import subprocess
raise Exception( exitcode = subprocess.Popen(cmd, env=env).wait()
"Failed to execute command:\n%s", else: # Windows prefers this, apparently; otherwise we would prefer subprocess
repr(cmd)[1:-1]) exitcode = os.spawnle(*([os.P_WAIT, sys.executable] + cmd + [env]))
if exitcode != 0:
sys.stdout.flush()
sys.stderr.flush()
print ("An error occurred when trying to install zc.buildout. "
"Look above this message for any errors that "
"were output by easy_install.")
sys.exit(exitcode)
###################################################################### ws.add_entry(eggs_dir)
# Import and run buildout
ws.add_entry(tmpeggs)
ws.require(requirement) ws.require(requirement)
import zc.buildout.buildout import zc.buildout.buildout
# If there isn't already a command in the args, add bootstrap
if not [a for a in args if '=' not in a]: if not [a for a in args if '=' not in a]:
args.append('bootstrap') args.append('bootstrap')
# if -c was provided, we push it back into args for buildout' main function
# if -c was provided, we push it back into args for buildout's main function
if options.config_file is not None: if options.config_file is not None:
args[0:0] = ['-c', options.config_file] args[0:0] = ['-c', options.config_file]
zc.buildout.buildout.main(args) zc.buildout.buildout.main(args)
shutil.rmtree(tmpeggs) if not options.eggs: # clean up temporary egg directory
shutil.rmtree(eggs_dir)