1# This Source Code Form is subject to the terms of the Mozilla Public 2# License, v. 2.0. If a copy of the MPL was not distributed with this 3# file, You can obtain one at http://mozilla.org/MPL/2.0/. 4 5# This script is not to be imported. 6assert __name__ == '__main__' 7import os 8import sys 9# If some older version of virtualenv is installed, it may interfere with this one. 10# So filter-out site-packages and dist-packages directories where it might be installed. 11# This is kinda sorta like invoking python with -S, but invoking a virtualenv python 2.7 12# with -S is broken (sys.path becomes completely wrong, and even `import os` fails). 13# (And while yes, it is kind of silly to use a virtualenv python to run virtualenv, we 14# do) 15sys.path = [p for p in sys.path if os.path.basename(p) not in ('site-packages', 'dist-packages')] 16try: 17 import importlib.util 18 spec = importlib.util.spec_from_file_location('main', os.path.join(os.path.dirname(__file__), '__main__.py')) 19 mod = importlib.util.module_from_spec(spec) 20 spec.loader.exec_module(mod) 21except ImportError: 22 import imp 23 mod_info = imp.find_module('__main__', [os.path.dirname(__file__)]) 24 mod = imp.load_module('main', *mod_info) 25 26 27# Fake zipfile module to make `mod.VersionedFindLoad` able to read the extracted 28# files rather than the zipapp. 29class fake_zipfile(object): 30 class ZipFile(object): 31 def __init__(self, path, mode): 32 self._path = path 33 self._mode = mode 34 35 def open(self, path): 36 # The caller expects a raw file object, with no unicode handling. 37 return open(os.path.join(self._path, path), self._mode + 'b') 38 39 def close(self): 40 pass 41 42mod.zipfile = fake_zipfile 43 44 45def run(): 46 with mod.VersionedFindLoad() as finder: 47 sys.meta_path.insert(0, finder) 48 finder._register_distutils_finder() 49 from virtualenv.__main__ import run as run_virtualenv 50 51 run_virtualenv() 52 53 54if __name__ == "__main__": 55 run() 56