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bootstrap.py
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#!/usr/bin/env python
## WARNING: This file is generated
#!/usr/bin/env python
"""Create a "virtual" Python installation
"""
import sys
import os
import optparse
import shutil
import logging
import distutils.sysconfig
try:
import subprocess
except ImportError, e:
if sys.version_info <= (2, 3):
print 'ERROR: %s' % e
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
join = os.path.join
py_version = 'python%s.%s' % (sys.version_info[0], sys.version_info[1])
is_jython = sys.platform.startswith('java')
expected_exe = is_jython and 'jython' or 'python'
REQUIRED_MODULES = ['os', 'posix', 'posixpath', 'ntpath', 'genericpath',
'fnmatch', 'locale', 'encodings', 'codecs',
'stat', 'UserDict', 'readline', 'copy_reg', 'types',
're', 'sre', 'sre_parse', 'sre_constants', 'sre_compile',
'lib-dynload', 'config', 'zlib']
if sys.version_info[:2] == (2, 6):
REQUIRED_MODULES.extend(['warnings', 'linecache', '_abcoll', 'abc'])
if sys.version_info[:2] <= (2, 3):
REQUIRED_MODULES.extend(['sets', '__future__'])
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 or 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)
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 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 symlink and hasattr(os, 'symlink'):
logger.info('Symlinking %s', dest)
os.symlink(os.path.abspath(src), dest)
else:
logger.info('Copying to %s', dest)
if os.path.isdir(src):
shutil.copytree(src, dest, True)
else:
shutil.copy2(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)
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)
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 & 07777
newmode = (oldmode | 0555) & 07777
os.chmod(fn, newmode)
logger.info('Changed mode of %s to %s', fn, oct(newmode))
def install_setuptools(py_executable, unzip=False):
setup_fn = 'setuptools-0.6c9-py%s.egg' % sys.version[:3]
search_dirs = ['.', os.path.dirname(__file__), join(os.path.dirname(__file__), 'support-files')]
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:
search_dirs.append(os.path.join(os.path.dirname(virtualenv.__file__), 'support-files'))
for dir in search_dirs:
if os.path.exists(join(dir, setup_fn)):
setup_fn = join(dir, setup_fn)
break
if is_jython and os._name == 'nt':
# Jython's .bat sys.executable can't handle a command line
# argument with newlines
import tempfile
fd, ez_setup = tempfile.mkstemp('.py')
os.write(fd, EZ_SETUP_PY)
os.close(fd)
cmd = [py_executable, ez_setup]
else:
cmd = [py_executable, '-c', EZ_SETUP_PY]
if unzip:
cmd.append('--always-unzip')
env = {}
if logger.stdout_level_matches(logger.DEBUG):
cmd.append('-v')
if os.path.exists(setup_fn):
logger.info('Using existing Setuptools egg: %s', 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:
logger.info('No Setuptools egg found; downloading')
cmd.extend(['--always-copy', '-U', 'setuptools'])
logger.start_progress('Installing setuptools...')
logger.indent += 2
cwd = None
if not os.access(os.getcwd(), os.W_OK):
cwd = '/tmp'
try:
call_subprocess(cmd, show_stdout=False,
filter_stdout=filter_ez_setup,
extra_env=env,
cwd=cwd)
finally:
logger.indent -= 2
logger.end_progress()
if is_jython and os._name == 'nt':
os.remove(ez_setup)
def filter_ez_setup(line):
if not line.strip():
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
def main():
if "--no-site-packages" not in sys.argv:
sys.argv.insert(1, "--no-site-packages")
parser = optparse.OptionParser(
version="1.3.4dev",
usage="%prog [OPTIONS] DEST_DIR")
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(
'--unzip-setuptools',
dest='unzip_setuptools',
action='store_true',
help="Unzip Setuptools 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')
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]
os.execvpe(interpreter, [interpreter, file] + sys.argv[1:], env)
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 os.environ.get('PYTHONHOME'):
if sys.platform == 'win32':
name = '%PYTHONHOME%'
else:
name = '$PYTHONHOME'
logger.warn('%s is set; this can cause problems creating environments' % name)
if options.relocatable:
make_environment_relocatable(home_dir)
return
create_environment(home_dir, site_packages=not options.no_site_packages, clear=options.clear,
unzip_setuptools=options.unzip_setuptools)
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):
cmd_parts = []
for part in cmd:
if len(part) > 40:
part = part[:30]+"..."+part[-5:]
if ' ' in part or '\n' in part or '"' in part or "'" in part:
part = '"%s"' % part.replace('"', '\\"')
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:
env = os.environ.copy()
env.update(extra_env)
else:
env = None
try:
proc = subprocess.Popen(
cmd, stderr=subprocess.STDOUT, stdin=None, stdout=stdout,
cwd=cwd, env=env)
except Exception, e:
logger.fatal(
"Error %s while executing command %s" % (e, cmd_desc))
raise
all_output = []
if stdout is not None:
stdout = proc.stdout
while 1:
line = stdout.readline()
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:
if all_output:
logger.notify('Complete output from command %s:' % cmd_desc)
logger.notify('\n'.join(all_output) + '\n----------------------------------------')
raise OSError(
"Command %s failed with error code %s"
% (cmd_desc, proc.returncode))
else:
logger.warn(
"Command %s had error code %s"
% (cmd_desc, proc.returncode))
def create_environment(home_dir, site_packages=True, clear=False,
unzip_setuptools=False):
"""
Creates a new environment in ``home_dir``.
If ``site_packages`` is true (the default) then the global
``site-packages/`` directory will be on the path.
If ``clear`` is true (default False) then the environment will
first be cleared.
"""
home_dir, lib_dir, inc_dir, bin_dir = path_locations(home_dir)
py_executable = install_python(
home_dir, lib_dir, inc_dir, bin_dir,
site_packages=site_packages, clear=clear)
install_distutils(lib_dir, home_dir)
install_setuptools(py_executable, unzip=unzip_setuptools)
install_activate(home_dir, bin_dir)
def path_locations(home_dir):
"""Return the path locations for the environment (where libraries are,
where scripts go, etc)"""
# XXX: We'd use distutils.sysconfig.get_python_inc/lib but its
# prefix arg is broken: http://bugs.python.org/issue3386
if sys.platform == 'win32':
# Windows has lots of problems with executables with spaces in
# the name; this function will remove them (using the ~1
# format):
mkdir(home_dir)
if ' ' in home_dir:
try:
import win32api
except ImportError:
print 'Error: the path "%s" has a space in it' % home_dir
print 'To handle these kinds of paths, the win32api module must be installed:'
print ' http://sourceforge.net/projects/pywin32/'
sys.exit(3)
home_dir = win32api.GetShortPathName(home_dir)
lib_dir = join(home_dir, 'Lib')
inc_dir = join(home_dir, 'Include')
bin_dir = join(home_dir, 'Scripts')
elif is_jython:
lib_dir = join(home_dir, 'Lib')
inc_dir = join(home_dir, 'Include')
bin_dir = join(home_dir, 'bin')
else:
lib_dir = join(home_dir, 'lib', py_version)
inc_dir = join(home_dir, 'include', py_version)
bin_dir = join(home_dir, 'bin')
return home_dir, lib_dir, inc_dir, bin_dir
def install_python(home_dir, lib_dir, inc_dir, bin_dir, site_packages, clear):
"""Install just the base environment, no distutils patches etc"""
if sys.executable.startswith(bin_dir):
print 'Please use the *system* python to run this script'
return
if clear:
rmtree(lib_dir)
## FIXME: why not delete it?
## Maybe it should delete everything with #!/path/to/venv/python in it
logger.notify('Not deleting %s', bin_dir)
if hasattr(sys, 'real_prefix'):
logger.notify('Using real prefix %r' % sys.real_prefix)
prefix = sys.real_prefix
else:
prefix = sys.prefix
mkdir(lib_dir)
fix_lib64(lib_dir)
stdlib_dirs = [os.path.dirname(os.__file__)]
if sys.platform == 'win32':
stdlib_dirs.append(join(os.path.dirname(stdlib_dirs[0]), 'DLLs'))
elif sys.platform == 'darwin':
stdlib_dirs.append(join(stdlib_dirs[0], 'site-packages'))
for stdlib_dir in stdlib_dirs:
if not os.path.isdir(stdlib_dir):
continue
if hasattr(os, 'symlink'):
logger.info('Symlinking Python bootstrap modules')
else:
logger.info('Copying Python bootstrap modules')
logger.indent += 2
try:
for fn in os.listdir(stdlib_dir):
if fn != 'site-packages' and os.path.splitext(fn)[0] in REQUIRED_MODULES:
copyfile(join(stdlib_dir, fn), join(lib_dir, fn))
finally:
logger.indent -= 2
mkdir(join(lib_dir, 'site-packages'))
writefile(join(lib_dir, 'site.py'), SITE_PY)
writefile(join(lib_dir, 'orig-prefix.txt'), prefix)
site_packages_filename = join(lib_dir, 'no-global-site-packages.txt')
if not site_packages:
writefile(site_packages_filename, '')
else:
if os.path.exists(site_packages_filename):
logger.info('Deleting %s' % site_packages_filename)
os.unlink(site_packages_filename)
stdinc_dir = join(prefix, 'include', py_version)
if os.path.exists(stdinc_dir):
copyfile(stdinc_dir, inc_dir)
else:
logger.debug('No include dir %s' % stdinc_dir)
if sys.exec_prefix != prefix:
if sys.platform == 'win32':
exec_dir = join(sys.exec_prefix, 'lib')
elif is_jython:
exec_dir = join(sys.exec_prefix, 'Lib')
else:
exec_dir = join(sys.exec_prefix, 'lib', py_version)
for fn in os.listdir(exec_dir):
copyfile(join(exec_dir, fn), join(lib_dir, fn))
if is_jython:
# Jython has either jython-dev.jar and javalib/ dir, or just
# jython.jar
for name in 'jython-dev.jar', 'javalib', 'jython.jar':
src = join(prefix, name)
if os.path.exists(src):
copyfile(src, join(home_dir, name))
# XXX: registry should always exist after Jython 2.5rc1
src = join(prefix, 'registry')
if os.path.exists(src):
copyfile(src, join(home_dir, 'registry'), symlink=False)
copyfile(join(prefix, 'cachedir'), join(home_dir, 'cachedir'),
symlink=False)
mkdir(bin_dir)
py_executable = join(bin_dir, os.path.basename(sys.executable))
if 'Python.framework' in prefix:
if py_executable.endswith('/Python'):
# The name of the python executable is not quite what
# we want, rename it.
py_executable = os.path.join(
os.path.dirname(py_executable), 'python')
logger.notify('New %s executable in %s', expected_exe, py_executable)
if sys.executable != py_executable:
## FIXME: could I just hard link?
executable = sys.executable
if sys.platform == 'cygwin' and os.path.exists(executable + '.exe'):
# Cygwin misreports sys.executable sometimes
executable += '.exe'
py_executable += '.exe'
logger.info('Executable actually exists in %s' % executable)
shutil.copyfile(executable, py_executable)
make_exe(py_executable)
if sys.platform == 'win32' or sys.platform == 'cygwin':
pythonw = os.path.join(os.path.dirname(sys.executable), 'pythonw.exe')
if os.path.exists(pythonw):
logger.info('Also created pythonw.exe')
shutil.copyfile(pythonw, os.path.join(os.path.dirname(py_executable), 'pythonw.exe'))
if os.path.splitext(os.path.basename(py_executable))[0] != expected_exe:
secondary_exe = os.path.join(os.path.dirname(py_executable),
expected_exe)
py_executable_ext = os.path.splitext(py_executable)[1]
if py_executable_ext == '.exe':
# python2.4 gives an extension of '.4' :P
secondary_exe += py_executable_ext
if os.path.exists(secondary_exe):
logger.warn('Not overwriting existing %s script %s (you must use %s)'
% (expected_exe, secondary_exe, py_executable))
else:
logger.notify('Also creating executable in %s' % secondary_exe)
shutil.copyfile(sys.executable, secondary_exe)
make_exe(secondary_exe)
if 'Python.framework' in prefix:
logger.debug('MacOSX Python framework detected')
# Make sure we use the the embedded interpreter inside
# the framework, even if sys.executable points to
# the stub executable in ${sys.prefix}/bin
# See http://groups.google.com/group/python-virtualenv/
# browse_thread/thread/17cab2f85da75951
shutil.copy(
os.path.join(
prefix, 'Resources/Python.app/Contents/MacOS/Python'),
py_executable)
# Copy the framework's dylib into the virtual
# environment
virtual_lib = os.path.join(home_dir, '.Python')
if os.path.exists(virtual_lib):
os.unlink(virtual_lib)
copyfile(
os.path.join(prefix, 'Python'),
virtual_lib)
# And then change the install_name of the copied python executable
try:
call_subprocess(
["install_name_tool", "-change",
os.path.join(prefix, 'Python'),
'@executable_path/../.Python',
py_executable])
except:
logger.fatal(
"Could not call install_name_tool -- you must have Apple's development tools installed")
raise
# Some tools depend on pythonX.Y being present
pth = py_executable + '%s.%s' % (
sys.version_info[0], sys.version_info[1])
if os.path.exists(pth):
os.unlink(pth)
os.symlink('python', pth)
if sys.platform == 'win32' and ' ' in py_executable:
# There's a bug with subprocess on Windows when using a first
# argument that has a space in it. Instead we have to quote
# the value:
py_executable = '"%s"' % py_executable
cmd = [py_executable, '-c', 'import sys; print sys.prefix']
logger.info('Testing executable with %s %s "%s"' % tuple(cmd))
proc = subprocess.Popen(cmd,
stdout=subprocess.PIPE)
proc_stdout, proc_stderr = proc.communicate()
proc_stdout = os.path.normcase(os.path.abspath(proc_stdout.strip()))
if proc_stdout != os.path.normcase(os.path.abspath(home_dir)):
logger.fatal(
'ERROR: The executable %s is not functioning' % py_executable)
logger.fatal(
'ERROR: It thinks sys.prefix is %r (should be %r)'
% (proc_stdout, os.path.normcase(os.path.abspath(home_dir))))
logger.fatal(
'ERROR: virtualenv is not compatible with this system or executable')
sys.exit(100)
else:
logger.info('Got sys.prefix result: %r' % proc_stdout)
pydistutils = os.path.expanduser('~/.pydistutils.cfg')
if os.path.exists(pydistutils):
logger.notify('Please make sure you remove any previous custom paths from '
'your %s file.' % pydistutils)
## FIXME: really this should be calculated earlier
return py_executable
def install_activate(home_dir, bin_dir):
if sys.platform == 'win32' or is_jython and os._name == 'nt':
files = {'activate.bat': ACTIVATE_BAT,
'deactivate.bat': DEACTIVATE_BAT}
if os.environ.get('OS') == 'Windows_NT' and os.environ.get('OSTYPE') == 'cygwin':
files['activate'] = ACTIVATE_SH
else:
files = {'activate': ACTIVATE_SH}
files['activate_this.py'] = ACTIVATE_THIS
for name, content in files.items():
content = content.replace('__VIRTUAL_ENV__', os.path.abspath(home_dir))
content = content.replace('__VIRTUAL_NAME__', os.path.basename(os.path.abspath(home_dir)))
content = content.replace('__BIN_NAME__', os.path.basename(bin_dir))
writefile(os.path.join(bin_dir, name), content)
def install_distutils(lib_dir, home_dir):
distutils_path = os.path.join(lib_dir, 'distutils')
mkdir(distutils_path)
## FIXME: maybe this prefix setting should only be put in place if
## there's a local distutils.cfg with a prefix setting?
home_dir = os.path.abspath(home_dir)
## FIXME: this is breaking things, removing for now:
#distutils_cfg = DISTUTILS_CFG + "\n[install]\nprefix=%s\n" % home_dir
writefile(os.path.join(distutils_path, '__init__.py'), DISTUTILS_INIT)
writefile(os.path.join(distutils_path, 'distutils.cfg'), DISTUTILS_CFG, overwrite=False)
def fix_lib64(lib_dir):
"""
Some platforms (particularly Gentoo on x64) put things in lib64/pythonX.Y
instead of lib/pythonX.Y. If this is such a platform we'll just create a
symlink so lib64 points to lib
"""
if [p for p in distutils.sysconfig.get_config_vars().values()
if isinstance(p, basestring) and 'lib64' in p]:
logger.debug('This system uses lib64; symlinking lib64 to lib')
assert os.path.basename(lib_dir) == 'python%s' % sys.version[:3], (
"Unexpected python lib dir: %r" % lib_dir)
lib_parent = os.path.dirname(lib_dir)
assert os.path.basename(lib_parent) == 'lib', (
"Unexpected parent dir: %r" % lib_parent)
copyfile(lib_parent, os.path.join(os.path.dirname(lib_parent), 'lib64'))
def resolve_interpreter(exe):
"""
If the executable given isn't an absolute path, search $PATH for the interpreter
"""
if os.path.abspath(exe) != exe:
paths = os.environ.get('PATH', '').split(os.pathsep)
for path in paths:
if os.path.exists(os.path.join(path, exe)):
exe = os.path.join(path, exe)
break
if not os.path.exists(exe):
logger.fatal('The executable %s (from --python=%s) does not exist' % (exe, exe))
sys.exit(3)
return exe
############################################################
## Relocating the environment:
def make_environment_relocatable(home_dir):
"""
Makes the already-existing environment use relative paths, and takes out
the #!-based environment selection in scripts.
"""
activate_this = os.path.join(home_dir, 'bin', 'activate_this.py')
if not os.path.exists(activate_this):
logger.fatal(
'The environment doesn\'t have a file %s -- please re-run virtualenv '
'on this environment to update it' % activate_this)
fixup_scripts(home_dir)
fixup_pth_and_egg_link(home_dir)
## FIXME: need to fix up distutils.cfg
OK_ABS_SCRIPTS = ['python', 'python%s' % sys.version[:3],
'activate', 'activate.bat', 'activate_this.py']
def fixup_scripts(home_dir):
# This is what we expect at the top of scripts:
shebang = '#!%s/bin/python' % os.path.normcase(os.path.abspath(home_dir))
# This is what we'll put:
new_shebang = '#!/usr/bin/env python%s' % sys.version[:3]
activate = "import os; activate_this=os.path.join(os.path.dirname(__file__), 'activate_this.py'); execfile(activate_this, dict(__file__=activate_this)); del os, activate_this"
bin_dir = os.path.join(home_dir, 'bin')
for filename in os.listdir(bin_dir):
filename = os.path.join(bin_dir, filename)
f = open(filename, 'rb')
lines = f.readlines()
f.close()
if not lines:
logger.warn('Script %s is an empty file' % filename)
continue
if lines[0].strip() != shebang:
if os.path.basename(filename) in OK_ABS_SCRIPTS:
logger.debug('Cannot make script %s relative' % filename)
elif lines[0].strip() == new_shebang:
logger.info('Script %s has already been made relative' % filename)
else:
logger.warn('Script %s cannot be made relative (it\'s not a normal script that starts with %s)'
% (filename, shebang))
continue
logger.notify('Making script %s relative' % filename)
lines = [new_shebang+'\n', activate+'\n'] + lines[1:]
f = open(filename, 'wb')
f.writelines(lines)
f.close()
def fixup_pth_and_egg_link(home_dir):
"""Makes .pth and .egg-link files use relative paths"""
home_dir = os.path.normcase(os.path.abspath(home_dir))
for path in sys.path:
if not path:
path = '.'
if not os.path.isdir(path):
continue
path = os.path.normcase(os.path.abspath(path))
if not path.startswith(home_dir):
logger.debug('Skipping system (non-environment) directory %s' % path)
continue
for filename in os.listdir(path):
filename = os.path.join(path, filename)
if filename.endswith('.pth'):
if not os.access(filename, os.W_OK):
logger.warn('Cannot write .pth file %s, skipping' % filename)
else:
fixup_pth_file(filename)
if filename.endswith('.egg-link'):
if not os.access(filename, os.W_OK):
logger.warn('Cannot write .egg-link file %s, skipping' % filename)
else:
fixup_egg_link(filename)
def fixup_pth_file(filename):
lines = []
prev_lines = []
f = open(filename)
prev_lines = f.readlines()
f.close()
for line in prev_lines:
line = line.strip()
if (not line or line.startswith('#') or line.startswith('import ')
or os.path.abspath(line) != line):
lines.append(line)
else:
new_value = make_relative_path(filename, line)
if line != new_value:
logger.debug('Rewriting path %s as %s (in %s)' % (line, new_value, filename))
lines.append(new_value)
if lines == prev_lines:
logger.info('No changes to .pth file %s' % filename)
return
logger.notify('Making paths in .pth file %s relative' % filename)
f = open(filename, 'w')
f.write('\n'.join(lines) + '\n')
f.close()
def fixup_egg_link(filename):
f = open(filename)
link = f.read().strip()
f.close()
if os.path.abspath(link) != link:
logger.debug('Link in %s already relative' % filename)
return
new_link = make_relative_path(filename, link)
logger.notify('Rewriting link %s in %s as %s' % (link, filename, new_link))
f = open(filename, 'w')
f.write(new_link)
f.close()
def make_relative_path(source, dest, dest_is_directory=True):
"""
Make a filename relative, where the filename is dest, and it is
being referred to from the filename source.
>>> make_relative_path('/usr/share/something/a-file.pth',
... '/usr/share/another-place/src/Directory')
'../another-place/src/Directory'
>>> make_relative_path('/usr/share/something/a-file.pth',
... '/home/user/src/Directory')
'../../../home/user/src/Directory'
>>> make_relative_path('/usr/share/a-file.pth', '/usr/share/')
'./'
"""
source = os.path.dirname(source)
if not dest_is_directory:
dest_filename = os.path.basename(dest)
dest = os.path.dirname(dest)
dest = os.path.normpath(os.path.abspath(dest))
source = os.path.normpath(os.path.abspath(source))
dest_parts = dest.strip(os.path.sep).split(os.path.sep)
source_parts = source.strip(os.path.sep).split(os.path.sep)
while dest_parts and source_parts and dest_parts[0] == source_parts[0]:
dest_parts.pop(0)
source_parts.pop(0)
full_parts = ['..']*len(source_parts) + dest_parts
if not dest_is_directory:
full_parts.append(dest_filename)
if not full_parts:
# Special case for the current directory (otherwise it'd be '')
return './'
return os.path.sep.join(full_parts)
############################################################
## Bootstrap script creation:
def create_bootstrap_script(extra_text, python_version=''):
"""
Creates a bootstrap script, which is like this script but with
extend_parser, adjust_options, and after_install hooks.
This returns a string that (written to disk of course) can be used
as a bootstrap script with your own customizations. The script
will be the standard virtualenv.py script, with your extra text
added (your extra text should be Python code).
If you include these functions, they will be called:
``extend_parser(optparse_parser)``:
You can add or remove options from the parser here.
``adjust_options(options, args)``:
You can change options here, or change the args (if you accept
different kinds of arguments, be sure you modify ``args`` so it is
only ``[DEST_DIR]``).
``after_install(options, home_dir)``:
After everything is installed, this function is called. This
is probably the function you are most likely to use. An
example would be::
def after_install(options, home_dir):
subprocess.call([join(home_dir, 'bin', 'easy_install'),
'MyPackage'])
subprocess.call([join(home_dir, 'bin', 'my-package-script'),
'setup', home_dir])
This example immediately installs a package, and runs a setup
script from that package.
If you provide something like ``python_version='2.4'`` then the
script will start with ``#!/usr/bin/env python2.4`` instead of
``#!/usr/bin/env python``. You can use this when the script must
be run with a particular Python version.
"""
filename = __file__
if filename.endswith('.pyc'):
filename = filename[:-1]
f = open(filename, 'rb')
content = f.read()
f.close()
py_exe = 'python%s' % python_version
content = (('#!/usr/bin/env %s\n' % py_exe)
+ '## WARNING: This file is generated\n'
+ content)
return content.replace('##EXT' 'END##', extra_text)
def extend_parser(optparse_parser):
optparse_parser.add_option('-g', '--git', action='store_true', dest='git',