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"""Create a "virtual" Python installation
Based on a script created by Ian Bicking."""
import sys, os, optparse, shutil
join = os.path.join
py_version = 'python%s.%s' % (sys.version_info[0], sys.version_info[1])
def mkdir(path):
if not os.path.exists(path):
print 'Creating %s' % path
os.makedirs(path)
else:
if verbose:
print 'Directory %s already exists'
def symlink(src, dest):
if not os.path.exists(dest):
if verbose:
print 'Creating symlink %s' % dest
os.symlink(src, dest)
else:
print 'Symlink %s already exists' % dest
def rmtree(dir):
if os.path.exists(dir):
print 'Deleting tree %s' % dir
shutil.rmtree(dir)
else:
if verbose:
print 'Do not need to delete %s; already gone' % dir
def make_exe(fn):
if os.name == 'posix':
oldmode = os.stat(fn).st_mode & 07777
newmode = (oldmode | 0555) & 07777
os.chmod(fn, newmode)
if verbose:
print 'Changed mode of %s to %s' % (fn, oct(newmode))
def main():
if os.name != 'posix':
print "This script only works on Unix-like platforms, sorry."
return
parser = optparse.OptionParser()
parser.add_option('-v', '--verbose', action='count', dest='verbose',
default=0, help="Increase verbosity")
parser.add_option('--prefix', dest="prefix", default='~',
help="The base directory to install to (default ~)")
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 copy the contents of the global site-packages dir to the "
"non-root site-packages")
options, args = parser.parse_args()
global verbose
home_dir = os.path.expanduser(options.prefix)
lib_dir = join(home_dir, 'lib', py_version)
inc_dir = join(home_dir, 'include', py_version)
bin_dir = join(home_dir, 'bin')
if sys.executable.startswith(bin_dir):
print 'Please use the *system* python to run this script'
return
verbose = options.verbose
assert not args, "No arguments allowed"
if options.clear:
rmtree(lib_dir)
rmtree(inc_dir)
print 'Not deleting', bin_dir
prefix = sys.prefix
mkdir(lib_dir)
stdlib_dir = join(prefix, 'lib', py_version)
for fn in os.listdir(stdlib_dir):
if fn != 'site-packages':
symlink(join(stdlib_dir, fn), join(lib_dir, fn))
mkdir(join(lib_dir, 'site-packages'))
if not options.no_site_packages:
for fn in os.listdir(join(stdlib_dir, 'site-packages')):
symlink(join(stdlib_dir, 'site-packages', fn),
join(lib_dir, 'site-packages', fn))
mkdir(inc_dir)
stdinc_dir = join(prefix, 'include', py_version)
for fn in os.listdir(stdinc_dir):
symlink(join(stdinc_dir, fn), join(inc_dir, fn))
if sys.exec_prefix != sys.prefix:
exec_dir = join(sys.exec_prefix, 'lib', py_version)
for fn in os.listdir(exec_dir):
symlink(join(exec_dir, fn), join(lib_dir, fn))
mkdir(bin_dir)
print 'Copying %s to %s' % (sys.executable, bin_dir)
py_executable = join(bin_dir, 'python')
if sys.executable != py_executable:
shutil.copyfile(sys.executable, py_executable)
make_exe(py_executable)
pydistutils = os.path.expanduser('~/.pydistutils.cfg')
if os.path.exists(pydistutils):
print 'Please make sure you remove any previous custom paths from'
print "your", pydistutils, "file."
print "You're now ready to download ez_setup.py, and run"
print py_executable, "ez_setup.py"
if __name__ == '__main__':
main()
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