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[Juan5212]

"""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()