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virtualenv.py
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virtualenv.py
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#!/usr/bin/env python
"""Create a "virtual" Python installation
"""
# If you change the version here, change it in setup.py
# and docs/conf.py as well.
virtualenv_version = "1.7.1.2"
import base64
import sys
import os
import optparse
import re
import shutil
import logging
import tempfile
import zlib
import errno
import distutils.sysconfig
from distutils.util import strtobool
try:
import subprocess
except ImportError:
if sys.version_info <= (2, 3):
print('ERROR: %s' % sys.exc_info()[1])
print('ERROR: this script requires Python 2.4 or greater; or at least the subprocess module.')
print('If you copy subprocess.py from a newer version of Python this script will probably work')
sys.exit(101)
else:
raise
try:
set
except NameError:
from sets import Set as set
try:
basestring
except NameError:
basestring = str
try:
import ConfigParser
except ImportError:
import configparser as ConfigParser
join = os.path.join
py_version = 'python%s.%s' % (sys.version_info[0], sys.version_info[1])
is_jython = sys.platform.startswith('java')
is_pypy = hasattr(sys, 'pypy_version_info')
is_win = (sys.platform == 'win32')
abiflags = getattr(sys, 'abiflags', '')
user_dir = os.path.expanduser('~')
if sys.platform == 'win32':
user_dir = os.environ.get('APPDATA', user_dir) # Use %APPDATA% for roaming
default_storage_dir = os.path.join(user_dir, 'virtualenv')
else:
default_storage_dir = os.path.join(user_dir, '.virtualenv')
default_config_file = os.path.join(default_storage_dir, 'virtualenv.ini')
if is_pypy:
expected_exe = 'pypy'
elif is_jython:
expected_exe = 'jython'
else:
expected_exe = 'python'
REQUIRED_MODULES = ['os', 'posix', 'posixpath', 'nt', 'ntpath', 'genericpath',
'fnmatch', 'locale', 'encodings', 'codecs',
'stat', 'UserDict', 'readline', 'copy_reg', 'types',
're', 'sre', 'sre_parse', 'sre_constants', 'sre_compile',
'zlib']
REQUIRED_FILES = ['lib-dynload', 'config']
majver, minver = sys.version_info[:2]
if majver == 2:
if minver >= 6:
REQUIRED_MODULES.extend(['warnings', 'linecache', '_abcoll', 'abc'])
if minver >= 7:
REQUIRED_MODULES.extend(['_weakrefset'])
if minver <= 3:
REQUIRED_MODULES.extend(['sets', '__future__'])
elif majver == 3:
# Some extra modules are needed for Python 3, but different ones
# for different versions.
REQUIRED_MODULES.extend(['_abcoll', 'warnings', 'linecache', 'abc', 'io',
'_weakrefset', 'copyreg', 'tempfile', 'random',
'__future__', 'collections', 'keyword', 'tarfile',
'shutil', 'struct', 'copy'])
if minver >= 2:
REQUIRED_FILES[-1] = 'config-%s' % majver
if minver == 3:
# The whole list of 3.3 modules is reproduced below - the current
# uncommented ones are required for 3.3 as of now, but more may be
# added as 3.3 development continues.
REQUIRED_MODULES.extend([
#"aifc",
#"antigravity",
#"argparse",
#"ast",
#"asynchat",
#"asyncore",
"base64",
#"bdb",
#"binhex",
"bisect",
#"calendar",
#"cgi",
#"cgitb",
#"chunk",
#"cmd",
#"codeop",
#"code",
#"colorsys",
#"_compat_pickle",
#"compileall",
#"concurrent",
#"configparser",
#"contextlib",
#"cProfile",
#"crypt",
#"csv",
#"ctypes",
#"curses",
#"datetime",
#"dbm",
#"decimal",
#"difflib",
#"dis",
#"doctest",
#"dummy_threading",
"_dummy_thread",
#"email",
#"filecmp",
#"fileinput",
#"formatter",
#"fractions",
#"ftplib",
#"functools",
#"getopt",
#"getpass",
#"gettext",
#"glob",
#"gzip",
"hashlib",
"heapq",
"hmac",
#"html",
#"http",
#"idlelib",
#"imaplib",
#"imghdr",
#"importlib",
#"inspect",
#"json",
#"lib2to3",
#"logging",
#"macpath",
#"macurl2path",
#"mailbox",
#"mailcap",
#"_markupbase",
#"mimetypes",
#"modulefinder",
#"multiprocessing",
#"netrc",
#"nntplib",
#"nturl2path",
#"numbers",
#"opcode",
#"optparse",
#"os2emxpath",
#"pdb",
#"pickle",
#"pickletools",
#"pipes",
#"pkgutil",
#"platform",
#"plat-linux2",
#"plistlib",
#"poplib",
#"pprint",
#"profile",
#"pstats",
#"pty",
#"pyclbr",
#"py_compile",
#"pydoc_data",
#"pydoc",
#"_pyio",
#"queue",
#"quopri",
"reprlib",
"rlcompleter",
#"runpy",
#"sched",
#"shelve",
#"shlex",
#"smtpd",
#"smtplib",
#"sndhdr",
#"socket",
#"socketserver",
#"sqlite3",
#"ssl",
#"stringprep",
#"string",
#"_strptime",
#"subprocess",
#"sunau",
#"symbol",
#"symtable",
#"sysconfig",
#"tabnanny",
#"telnetlib",
#"test",
#"textwrap",
#"this",
#"_threading_local",
#"threading",
#"timeit",
#"tkinter",
#"tokenize",
#"token",
#"traceback",
#"trace",
#"tty",
#"turtledemo",
#"turtle",
#"unittest",
#"urllib",
#"uuid",
#"uu",
#"wave",
"weakref",
#"webbrowser",
#"wsgiref",
#"xdrlib",
#"xml",
#"xmlrpc",
#"zipfile",
])
if is_pypy:
# these are needed to correctly display the exceptions that may happen
# during the bootstrap
REQUIRED_MODULES.extend(['traceback', 'linecache'])
class Logger(object):
"""
Logging object for use in command-line script. Allows ranges of
levels, to avoid some redundancy of displayed information.
"""
DEBUG = logging.DEBUG
INFO = logging.INFO
NOTIFY = (logging.INFO+logging.WARN)/2
WARN = WARNING = logging.WARN
ERROR = logging.ERROR
FATAL = logging.FATAL
LEVELS = [DEBUG, INFO, NOTIFY, WARN, ERROR, FATAL]
def __init__(self, consumers):
self.consumers = consumers
self.indent = 0
self.in_progress = None
self.in_progress_hanging = False
def debug(self, msg, *args, **kw):
self.log(self.DEBUG, msg, *args, **kw)
def info(self, msg, *args, **kw):
self.log(self.INFO, msg, *args, **kw)
def notify(self, msg, *args, **kw):
self.log(self.NOTIFY, msg, *args, **kw)
def warn(self, msg, *args, **kw):
self.log(self.WARN, msg, *args, **kw)
def error(self, msg, *args, **kw):
self.log(self.WARN, msg, *args, **kw)
def fatal(self, msg, *args, **kw):
self.log(self.FATAL, msg, *args, **kw)
def log(self, level, msg, *args, **kw):
if args:
if kw:
raise TypeError(
"You may give positional or keyword arguments, not both")
args = args or kw
rendered = None
for consumer_level, consumer in self.consumers:
if self.level_matches(level, consumer_level):
if (self.in_progress_hanging
and consumer in (sys.stdout, sys.stderr)):
self.in_progress_hanging = False
sys.stdout.write('\n')
sys.stdout.flush()
if rendered is None:
if args:
rendered = msg % args
else:
rendered = msg
rendered = ' '*self.indent + rendered
if hasattr(consumer, 'write'):
consumer.write(rendered+'\n')
else:
consumer(rendered)
def start_progress(self, msg):
assert not self.in_progress, (
"Tried to start_progress(%r) while in_progress %r"
% (msg, self.in_progress))
if self.level_matches(self.NOTIFY, self._stdout_level()):
sys.stdout.write(msg)
sys.stdout.flush()
self.in_progress_hanging = True
else:
self.in_progress_hanging = False
self.in_progress = msg
def end_progress(self, msg='done.'):
assert self.in_progress, (
"Tried to end_progress without start_progress")
if self.stdout_level_matches(self.NOTIFY):
if not self.in_progress_hanging:
# Some message has been printed out since start_progress
sys.stdout.write('...' + self.in_progress + msg + '\n')
sys.stdout.flush()
else:
sys.stdout.write(msg + '\n')
sys.stdout.flush()
self.in_progress = None
self.in_progress_hanging = False
def show_progress(self):
"""If we are in a progress scope, and no log messages have been
shown, write out another '.'"""
if self.in_progress_hanging:
sys.stdout.write('.')
sys.stdout.flush()
def stdout_level_matches(self, level):
"""Returns true if a message at this level will go to stdout"""
return self.level_matches(level, self._stdout_level())
def _stdout_level(self):
"""Returns the level that stdout runs at"""
for level, consumer in self.consumers:
if consumer is sys.stdout:
return level
return self.FATAL
def level_matches(self, level, consumer_level):
"""
>>> l = Logger([])
>>> l.level_matches(3, 4)
False
>>> l.level_matches(3, 2)
True
>>> l.level_matches(slice(None, 3), 3)
False
>>> l.level_matches(slice(None, 3), 2)
True
>>> l.level_matches(slice(1, 3), 1)
True
>>> l.level_matches(slice(2, 3), 1)
False
"""
if isinstance(level, slice):
start, stop = level.start, level.stop
if start is not None and start > consumer_level:
return False
if stop is not None and stop <= consumer_level:
return False
return True
else:
return level >= consumer_level
#@classmethod
def level_for_integer(cls, level):
levels = cls.LEVELS
if level < 0:
return levels[0]
if level >= len(levels):
return levels[-1]
return levels[level]
level_for_integer = classmethod(level_for_integer)
# create a silent logger just to prevent this from being undefined
# will be overridden with requested verbosity main() is called.
logger = Logger([(Logger.LEVELS[-1], sys.stdout)])
def mkdir(path):
if not os.path.exists(path):
logger.info('Creating %s', path)
os.makedirs(path)
else:
logger.info('Directory %s already exists', path)
def copyfileordir(src, dest):
if os.path.isdir(src):
shutil.copytree(src, dest, True)
else:
shutil.copy2(src, dest)
def copyfile(src, dest, symlink=True):
if not os.path.exists(src):
# Some bad symlink in the src
logger.warn('Cannot find file %s (bad symlink)', src)
return
if os.path.exists(dest):
logger.debug('File %s already exists', dest)
return
if not os.path.exists(os.path.dirname(dest)):
logger.info('Creating parent directories for %s' % os.path.dirname(dest))
os.makedirs(os.path.dirname(dest))
if not os.path.islink(src):
srcpath = os.path.abspath(src)
else:
srcpath = os.readlink(src)
if symlink and hasattr(os, 'symlink') and not is_win:
logger.info('Symlinking %s', dest)
try:
os.symlink(srcpath, dest)
except (OSError, NotImplementedError):
logger.info('Symlinking failed, copying to %s', dest)
copyfileordir(src, dest)
else:
logger.info('Copying to %s', dest)
copyfileordir(src, dest)
def writefile(dest, content, overwrite=True):
if not os.path.exists(dest):
logger.info('Writing %s', dest)
f = open(dest, 'wb')
f.write(content.encode('utf-8'))
f.close()
return
else:
f = open(dest, 'rb')
c = f.read()
f.close()
if c != content:
if not overwrite:
logger.notify('File %s exists with different content; not overwriting', dest)
return
logger.notify('Overwriting %s with new content', dest)
f = open(dest, 'wb')
f.write(content.encode('utf-8'))
f.close()
else:
logger.info('Content %s already in place', dest)
def rmtree(dir):
if os.path.exists(dir):
logger.notify('Deleting tree %s', dir)
shutil.rmtree(dir)
else:
logger.info('Do not need to delete %s; already gone', dir)
def make_exe(fn):
if hasattr(os, 'chmod'):
oldmode = os.stat(fn).st_mode & 0xFFF # 0o7777
newmode = (oldmode | 0x16D) & 0xFFF # 0o555, 0o7777
os.chmod(fn, newmode)
logger.info('Changed mode of %s to %s', fn, oct(newmode))
def _find_file(filename, dirs):
for dir in reversed(dirs):
if os.path.exists(join(dir, filename)):
return join(dir, filename)
return filename
def _install_req(py_executable, unzip=False, distribute=False,
search_dirs=None, never_download=False):
if search_dirs is None:
search_dirs = file_search_dirs()
if not distribute:
setup_fn = 'setuptools-0.6c11-py%s.egg' % sys.version[:3]
project_name = 'setuptools'
bootstrap_script = EZ_SETUP_PY
source = None
else:
setup_fn = None
source = 'distribute-0.6.24.tar.gz'
project_name = 'distribute'
bootstrap_script = DISTRIBUTE_SETUP_PY
if setup_fn is not None:
setup_fn = _find_file(setup_fn, search_dirs)
if source is not None:
source = _find_file(source, search_dirs)
if is_jython and os._name == 'nt':
# Jython's .bat sys.executable can't handle a command line
# argument with newlines
fd, ez_setup = tempfile.mkstemp('.py')
os.write(fd, bootstrap_script)
os.close(fd)
cmd = [py_executable, ez_setup]
else:
cmd = [py_executable, '-c', bootstrap_script]
if unzip:
cmd.append('--always-unzip')
env = {}
remove_from_env = []
if logger.stdout_level_matches(logger.DEBUG):
cmd.append('-v')
old_chdir = os.getcwd()
if setup_fn is not None and os.path.exists(setup_fn):
logger.info('Using existing %s egg: %s' % (project_name, setup_fn))
cmd.append(setup_fn)
if os.environ.get('PYTHONPATH'):
env['PYTHONPATH'] = setup_fn + os.path.pathsep + os.environ['PYTHONPATH']
else:
env['PYTHONPATH'] = setup_fn
else:
# the source is found, let's chdir
if source is not None and os.path.exists(source):
logger.info('Using existing %s egg: %s' % (project_name, source))
os.chdir(os.path.dirname(source))
# in this case, we want to be sure that PYTHONPATH is unset (not
# just empty, really unset), else CPython tries to import the
# site.py that it's in virtualenv_support
remove_from_env.append('PYTHONPATH')
else:
if never_download:
logger.fatal("Can't find any local distributions of %s to install "
"and --never-download is set. Either re-run virtualenv "
"without the --never-download option, or place a %s "
"distribution (%s) in one of these "
"locations: %r" % (project_name, project_name,
setup_fn or source,
search_dirs))
sys.exit(1)
logger.info('No %s egg found; downloading' % project_name)
cmd.extend(['--always-copy', '-U', project_name])
logger.start_progress('Installing %s...' % project_name)
logger.indent += 2
cwd = None
if project_name == 'distribute':
env['DONT_PATCH_SETUPTOOLS'] = 'true'
def _filter_ez_setup(line):
return filter_ez_setup(line, project_name)
if not os.access(os.getcwd(), os.W_OK):
cwd = tempfile.mkdtemp()
if source is not None and os.path.exists(source):
# the current working dir is hostile, let's copy the
# tarball to a temp dir
target = os.path.join(cwd, os.path.split(source)[-1])
shutil.copy(source, target)
try:
call_subprocess(cmd, show_stdout=False,
filter_stdout=_filter_ez_setup,
extra_env=env,
remove_from_env=remove_from_env,
cwd=cwd)
finally:
logger.indent -= 2
logger.end_progress()
if os.getcwd() != old_chdir:
os.chdir(old_chdir)
if is_jython and os._name == 'nt':
os.remove(ez_setup)
def file_search_dirs():
here = os.path.dirname(os.path.abspath(__file__))
dirs = ['.', here,
join(here, 'virtualenv_support')]
if os.path.splitext(os.path.dirname(__file__))[0] != 'virtualenv':
# Probably some boot script; just in case virtualenv is installed...
try:
import virtualenv
except ImportError:
pass
else:
dirs.append(os.path.join(os.path.dirname(virtualenv.__file__), 'virtualenv_support'))
return [d for d in dirs if os.path.isdir(d)]
def install_setuptools(py_executable, unzip=False,
search_dirs=None, never_download=False):
_install_req(py_executable, unzip,
search_dirs=search_dirs, never_download=never_download)
def install_distribute(py_executable, unzip=False,
search_dirs=None, never_download=False):
_install_req(py_executable, unzip, distribute=True,
search_dirs=search_dirs, never_download=never_download)
_pip_re = re.compile(r'^pip-.*(zip|tar.gz|tar.bz2|tgz|tbz)$', re.I)
def install_pip(py_executable, search_dirs=None, never_download=False):
if search_dirs is None:
search_dirs = file_search_dirs()
filenames = []
for dir in search_dirs:
filenames.extend([join(dir, fn) for fn in os.listdir(dir)
if _pip_re.search(fn)])
filenames = [(os.path.basename(filename).lower(), i, filename) for i, filename in enumerate(filenames)]
filenames.sort()
filenames = [filename for basename, i, filename in filenames]
if not filenames:
filename = 'pip'
else:
filename = filenames[-1]
easy_install_script = 'easy_install'
if sys.platform == 'win32':
easy_install_script = 'easy_install-script.py'
cmd = [join(os.path.dirname(py_executable), easy_install_script), filename]
if sys.platform == 'win32':
cmd.insert(0, py_executable)
if filename == 'pip':
if never_download:
logger.fatal("Can't find any local distributions of pip to install "
"and --never-download is set. Either re-run virtualenv "
"without the --never-download option, or place a pip "
"source distribution (zip/tar.gz/tar.bz2) in one of these "
"locations: %r" % search_dirs)
sys.exit(1)
logger.info('Installing pip from network...')
else:
logger.info('Installing existing %s distribution: %s' % (
os.path.basename(filename), filename))
logger.start_progress('Installing pip...')
logger.indent += 2
def _filter_setup(line):
return filter_ez_setup(line, 'pip')
try:
call_subprocess(cmd, show_stdout=False,
filter_stdout=_filter_setup)
finally:
logger.indent -= 2
logger.end_progress()
def filter_ez_setup(line, project_name='setuptools'):
if not line.strip():
return Logger.DEBUG
if project_name == 'distribute':
for prefix in ('Extracting', 'Now working', 'Installing', 'Before',
'Scanning', 'Setuptools', 'Egg', 'Already',
'running', 'writing', 'reading', 'installing',
'creating', 'copying', 'byte-compiling', 'removing',
'Processing'):
if line.startswith(prefix):
return Logger.DEBUG
return Logger.DEBUG
for prefix in ['Reading ', 'Best match', 'Processing setuptools',
'Copying setuptools', 'Adding setuptools',
'Installing ', 'Installed ']:
if line.startswith(prefix):
return Logger.DEBUG
return Logger.INFO
class UpdatingDefaultsHelpFormatter(optparse.IndentedHelpFormatter):
"""
Custom help formatter for use in ConfigOptionParser that updates
the defaults before expanding them, allowing them to show up correctly
in the help listing
"""
def expand_default(self, option):
if self.parser is not None:
self.parser.update_defaults(self.parser.defaults)
return optparse.IndentedHelpFormatter.expand_default(self, option)
class ConfigOptionParser(optparse.OptionParser):
"""
Custom option parser which updates its defaults by by checking the
configuration files and environmental variables
"""
def __init__(self, *args, **kwargs):
self.config = ConfigParser.RawConfigParser()
self.files = self.get_config_files()
self.config.read(self.files)
optparse.OptionParser.__init__(self, *args, **kwargs)
def get_config_files(self):
config_file = os.environ.get('VIRTUALENV_CONFIG_FILE', False)
if config_file and os.path.exists(config_file):
return [config_file]
return [default_config_file]
def update_defaults(self, defaults):
"""
Updates the given defaults with values from the config files and
the environ. Does a little special handling for certain types of
options (lists).
"""
# Then go and look for the other sources of configuration:
config = {}
# 1. config files
config.update(dict(self.get_config_section('virtualenv')))
# 2. environmental variables
config.update(dict(self.get_environ_vars()))
# Then set the options with those values
for key, val in config.items():
key = key.replace('_', '-')
if not key.startswith('--'):
key = '--%s' % key # only prefer long opts
option = self.get_option(key)
if option is not None:
# ignore empty values
if not val:
continue
# handle multiline configs
if option.action == 'append':
val = val.split()
else:
option.nargs = 1
if option.action in ('store_true', 'store_false', 'count'):
val = strtobool(val)
try:
val = option.convert_value(key, val)
except optparse.OptionValueError:
e = sys.exc_info()[1]
print("An error occured during configuration: %s" % e)
sys.exit(3)
defaults[option.dest] = val
return defaults
def get_config_section(self, name):
"""
Get a section of a configuration
"""
if self.config.has_section(name):
return self.config.items(name)
return []
def get_environ_vars(self, prefix='VIRTUALENV_'):
"""
Returns a generator with all environmental vars with prefix VIRTUALENV
"""
for key, val in os.environ.items():
if key.startswith(prefix):
yield (key.replace(prefix, '').lower(), val)
def get_default_values(self):
"""
Overridding to make updating the defaults after instantiation of
the option parser possible, update_defaults() does the dirty work.
"""
if not self.process_default_values:
# Old, pre-Optik 1.5 behaviour.
return optparse.Values(self.defaults)
defaults = self.update_defaults(self.defaults.copy()) # ours
for option in self._get_all_options():
default = defaults.get(option.dest)
if isinstance(default, basestring):
opt_str = option.get_opt_string()
defaults[option.dest] = option.check_value(opt_str, default)
return optparse.Values(defaults)
def main():
parser = ConfigOptionParser(
version=virtualenv_version,
usage="%prog [OPTIONS] DEST_DIR",
formatter=UpdatingDefaultsHelpFormatter())
parser.add_option(
'-v', '--verbose',
action='count',
dest='verbose',
default=0,
help="Increase verbosity")
parser.add_option(
'-q', '--quiet',
action='count',
dest='quiet',
default=0,
help='Decrease verbosity')
parser.add_option(
'-p', '--python',
dest='python',
metavar='PYTHON_EXE',
help='The Python interpreter to use, e.g., --python=python2.5 will use the python2.5 '
'interpreter to create the new environment. The default is the interpreter that '
'virtualenv was installed with (%s)' % sys.executable)
parser.add_option(
'--clear',
dest='clear',
action='store_true',
help="Clear out the non-root install and start from scratch")
parser.add_option(
'--no-site-packages',
dest='no_site_packages',
action='store_true',
help="Don't give access to the global site-packages dir to the "
"virtual environment")
parser.add_option(
'--system-site-packages',
dest='system_site_packages',
action='store_true',
help="Give access to the global site-packages dir to the "
"virtual environment")
parser.add_option(
'--unzip-setuptools',
dest='unzip_setuptools',
action='store_true',
help="Unzip Setuptools or Distribute when installing it")
parser.add_option(
'--relocatable',
dest='relocatable',
action='store_true',
help='Make an EXISTING virtualenv environment relocatable. '
'This fixes up scripts and makes all .pth files relative')
parser.add_option(
'--distribute',
dest='use_distribute',
action='store_true',
help='Use Distribute instead of Setuptools. Set environ variable '
'VIRTUALENV_DISTRIBUTE to make it the default ')
default_search_dirs = file_search_dirs()
parser.add_option(
'--extra-search-dir',
dest="search_dirs",
action="append",
default=default_search_dirs,
help="Directory to look for setuptools/distribute/pip distributions in. "
"You can add any number of additional --extra-search-dir paths.")
parser.add_option(
'--never-download',
dest="never_download",
action="store_true",
help="Never download anything from the network. Instead, virtualenv will fail "
"if local distributions of setuptools/distribute/pip are not present.")
parser.add_option(
'--prompt=',
dest='prompt',
help='Provides an alternative prompt prefix for this environment')
if 'extend_parser' in globals():
extend_parser(parser)
options, args = parser.parse_args()
global logger
if 'adjust_options' in globals():
adjust_options(options, args)
verbosity = options.verbose - options.quiet
logger = Logger([(Logger.level_for_integer(2-verbosity), sys.stdout)])
if options.python and not os.environ.get('VIRTUALENV_INTERPRETER_RUNNING'):
env = os.environ.copy()
interpreter = resolve_interpreter(options.python)
if interpreter == sys.executable:
logger.warn('Already using interpreter %s' % interpreter)
else:
logger.notify('Running virtualenv with interpreter %s' % interpreter)
env['VIRTUALENV_INTERPRETER_RUNNING'] = 'true'
file = __file__
if file.endswith('.pyc'):
file = file[:-1]
popen = subprocess.Popen([interpreter, file] + sys.argv[1:], env=env)
raise SystemExit(popen.wait())
# Force --distribute on Python 3, since setuptools is not available.
if majver > 2:
options.use_distribute = True
if os.environ.get('PYTHONDONTWRITEBYTECODE') and not options.use_distribute:
print(
"The PYTHONDONTWRITEBYTECODE environment variable is "
"not compatible with setuptools. Either use --distribute "
"or unset PYTHONDONTWRITEBYTECODE.")
sys.exit(2)
if not args:
print('You must provide a DEST_DIR')
parser.print_help()
sys.exit(2)
if len(args) > 1:
print('There must be only one argument: DEST_DIR (you gave %s)' % (
' '.join(args)))
parser.print_help()
sys.exit(2)
home_dir = args[0]
if os.environ.get('WORKING_ENV'):
logger.fatal('ERROR: you cannot run virtualenv while in a workingenv')
logger.fatal('Please deactivate your workingenv, then re-run this script')
sys.exit(3)
if 'PYTHONHOME' in os.environ:
logger.warn('PYTHONHOME is set. You *must* activate the virtualenv before using it')
del os.environ['PYTHONHOME']
if options.relocatable:
make_environment_relocatable(home_dir)
return
if options.no_site_packages:
logger.warn('The --no-site-packages flag is deprecated; it is now '
'the default behavior.')
create_environment(home_dir,
site_packages=options.system_site_packages,
clear=options.clear,
unzip_setuptools=options.unzip_setuptools,
use_distribute=options.use_distribute,
prompt=options.prompt,
search_dirs=options.search_dirs,
never_download=options.never_download)
if 'after_install' in globals():
after_install(options, home_dir)
def call_subprocess(cmd, show_stdout=True,
filter_stdout=None, cwd=None,
raise_on_returncode=True, extra_env=None,
remove_from_env=None):
cmd_parts = []
for part in cmd:
if len(part) > 45:
part = part[:20]+"..."+part[-20:]
if ' ' in part or '\n' in part or '"' in part or "'" in part:
part = '"%s"' % part.replace('"', '\\"')
if hasattr(part, 'decode'):
try:
part = part.decode(sys.getdefaultencoding())
except UnicodeDecodeError:
part = part.decode(sys.getfilesystemencoding())
cmd_parts.append(part)
cmd_desc = ' '.join(cmd_parts)
if show_stdout:
stdout = None
else:
stdout = subprocess.PIPE
logger.debug("Running command %s" % cmd_desc)
if extra_env or remove_from_env:
env = os.environ.copy()
if extra_env:
env.update(extra_env)
if remove_from_env:
for varname in remove_from_env:
env.pop(varname, None)
else:
env = None
try:
proc = subprocess.Popen(
cmd, stderr=subprocess.STDOUT, stdin=None, stdout=stdout,
cwd=cwd, env=env)
except Exception:
e = sys.exc_info()[1]
logger.fatal(
"Error %s while executing command %s" % (e, cmd_desc))
raise
all_output = []
if stdout is not None:
stdout = proc.stdout
encoding = sys.getdefaultencoding()
fs_encoding = sys.getfilesystemencoding()
while 1:
line = stdout.readline()
try:
line = line.decode(encoding)
except UnicodeDecodeError:
line = line.decode(fs_encoding)
if not line:
break
line = line.rstrip()
all_output.append(line)
if filter_stdout:
level = filter_stdout(line)
if isinstance(level, tuple):
level, line = level
logger.log(level, line)
if not logger.stdout_level_matches(level):
logger.show_progress()
else:
logger.info(line)
else:
proc.communicate()
proc.wait()
if proc.returncode:
if raise_on_returncode: