Revert of Removed virtualenv from depot_tools

bootstrap/virtualenv/setup.py

Index: bootstrap/virtualenv/setup.py
diff --git a/bootstrap/virtualenv/setup.py b/bootstrap/virtualenv/setup.py
new file mode 100644
index 0000000000000000000000000000000000000000..ce35314fb5eb719fda7d03efd3d9b995b56de460
--- /dev/null
+++ b/bootstrap/virtualenv/setup.py
@@ -0,0 +1,111 @@
+import os
+import re
+import shutil
+import sys
+
+if sys.version_info[:2] < (2, 6):
+    sys.exit('virtualenv requires Python 2.6 or higher.')
+
+try:
+    from setuptools import setup
+    from setuptools.command.test import test as TestCommand
+
+    class PyTest(TestCommand):
+        user_options = [('pytest-args=', 'a', "Arguments to pass to py.test")]
+
+        def initialize_options(self):
+            TestCommand.initialize_options(self)
+            self.pytest_args = None
+
+        def finalize_options(self):
+            TestCommand.finalize_options(self)
+            self.test_args = []
+            self.test_suite = True
+
+        def run_tests(self):
+            # import here, because outside the eggs aren't loaded
+            import pytest
+            errno = pytest.main(self.pytest_args)
+            sys.exit(errno)
+
+    setup_params = {
+        'entry_points': {
+            'console_scripts': [
+                'virtualenv=virtualenv:main',
+                'virtualenv-%s.%s=virtualenv:main' % sys.version_info[:2]
+            ],
+        },
+        'zip_safe': False,
+        'cmdclass': {'test': PyTest},
+        'tests_require': ['pytest', 'mock'],
+    }
+except ImportError:
+    from distutils.core import setup
+    if sys.platform == 'win32':
+        print('Note: without Setuptools installed you will '
+              'have to use "python -m virtualenv ENV"')
+        setup_params = {}
+    else:
+        script = 'scripts/virtualenv'
+        script_ver = script + '-%s.%s' % sys.version_info[:2]
+        shutil.copy(script, script_ver)
+        setup_params = {'scripts': [script, script_ver]}
+
+
+def read_file(*paths):
+    here = os.path.dirname(os.path.abspath(__file__))
+    with open(os.path.join(here, *paths)) as f:
+        return f.read()
+
+# Get long_description from index.rst:
+long_description = read_file('docs', 'index.rst')
+long_description = long_description.strip().split('split here', 1)[0]
+# Add release history
+long_description += "\n\n" + read_file('docs', 'changes.rst')
+
+
+def get_version():
+    version_file = read_file('virtualenv.py')
+    version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
+                              version_file, re.M)
+    if version_match:
+        return version_match.group(1)
+    raise RuntimeError("Unable to find version string.")
+
+
+# Hack to prevent stupid TypeError: 'NoneType' object is not callable error on
+# exit of python setup.py test # in multiprocessing/util.py _exit_function when
+# running python setup.py test (see
+# http://www.eby-sarna.com/pipermail/peak/2010-May/003357.html)
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
+setup(
+    name='virtualenv',
+    version=get_version(),
+    description="Virtual Python Environment builder",
+    long_description=long_description,
+    classifiers=[
+        'Development Status :: 5 - Production/Stable',
+        'Intended Audience :: Developers',
+        'License :: OSI Approved :: MIT License',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.6',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.1',
+        'Programming Language :: Python :: 3.2',
+    ],
+    keywords='setuptools deployment installation distutils',
+    author='Ian Bicking',
+    author_email='ianb@colorstudy.com',
+    maintainer='Jannis Leidel, Carl Meyer and Brian Rosner',
+    maintainer_email='python-virtualenv@groups.google.com',
+    url='https://virtualenv.pypa.io/',
+    license='MIT',
+    py_modules=['virtualenv'],
+    packages=['virtualenv_support'],
+    package_data={'virtualenv_support': ['*.whl']},
+    **setup_params)