--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/venv/lib/python2.7/site-packages/pip/req/req_install.py	Mon Oct 12 17:43:33 2015 -0400
@@ -0,0 +1,1161 @@
+from __future__ import absolute_import
+
+import logging
+import os
+import re
+import shutil
+import sys
+import tempfile
+import warnings
+import zipfile
+
+from distutils.util import change_root
+from distutils import sysconfig
+from email.parser import FeedParser
+
+from pip._vendor import pkg_resources, six
+from pip._vendor.distlib.markers import interpret as markers_interpret
+from pip._vendor.six.moves import configparser
+
+import pip.wheel
+
+from pip.compat import native_str, WINDOWS
+from pip.download import is_url, url_to_path, path_to_url, is_archive_file
+from pip.exceptions import (
+    InstallationError, UninstallationError, UnsupportedWheel,
+)
+from pip.locations import (
+    bin_py, running_under_virtualenv, PIP_DELETE_MARKER_FILENAME, bin_user,
+)
+from pip.utils import (
+    display_path, rmtree, ask_path_exists, backup_dir, is_installable_dir,
+    dist_in_usersite, dist_in_site_packages, egg_link_path, make_path_relative,
+    call_subprocess, read_text_file, FakeFile, _make_build_dir,
+)
+from pip.utils.deprecation import RemovedInPip7Warning, RemovedInPip8Warning
+from pip.utils.logging import indent_log
+from pip.req.req_uninstall import UninstallPathSet
+from pip.vcs import vcs
+from pip.wheel import move_wheel_files, Wheel
+from pip._vendor.packaging.version import Version
+
+
+_FILTER_INSTALL_OUTPUT_REGEX = re.compile(r"""
+    (?:^running\s.*) |
+    (?:^writing\s.*) |
+    (?:creating\s.*) |
+    (?:[Cc]opying\s.*) |
+    (?:^reading\s.*') |
+    (?:^removing\s.*\.egg-info'\s\(and\severything\sunder\sit\)$) |
+    (?:^byte-compiling) |
+    (?:^SyntaxError:) |
+    (?:^SyntaxWarning:) |
+    (?:^\s*Skipping\simplicit\sfixer:) |
+    (?:^\s*(warning:\s)?no\spreviously-included\s(files|directories)) |
+    (?:^\s*warning:\sno\sfiles\sfound matching\s\'.*\') |
+    (?:^\s*changing\smode\sof) |
+    # Not sure what this warning is, but it seems harmless:
+    (?:^warning:\smanifest_maker:\sstandard\sfile\s'-c'\snot found$)
+    """, re.VERBOSE)
+
+
+logger = logging.getLogger(__name__)
+
+
+def _filter_install(line):
+    level = logging.INFO
+    if _FILTER_INSTALL_OUTPUT_REGEX.search(line.strip()):
+        level = logging.DEBUG
+    return (level, line)
+
+
+class InstallRequirement(object):
+
+    def __init__(self, req, comes_from, source_dir=None, editable=False,
+                 link=None, as_egg=False, update=True, editable_options=None,
+                 pycompile=True, markers=None, isolated=False):
+        self.extras = ()
+        if isinstance(req, six.string_types):
+            req = pkg_resources.Requirement.parse(req)
+            self.extras = req.extras
+
+        self.req = req
+        self.comes_from = comes_from
+        self.source_dir = source_dir
+        self.editable = editable
+
+        if editable_options is None:
+            editable_options = {}
+
+        self.editable_options = editable_options
+        self.link = link
+        self.as_egg = as_egg
+        self.markers = markers
+        self._egg_info_path = None
+        # This holds the pkg_resources.Distribution object if this requirement
+        # is already available:
+        self.satisfied_by = None
+        # This hold the pkg_resources.Distribution object if this requirement
+        # conflicts with another installed distribution:
+        self.conflicts_with = None
+        # Temporary build location
+        self._temp_build_dir = None
+        # Used to store the global directory where the _temp_build_dir should
+        # have been created. Cf _correct_build_location method.
+        self._ideal_global_dir = None
+        # True if the editable should be updated:
+        self.update = update
+        # Set to True after successful installation
+        self.install_succeeded = None
+        # UninstallPathSet of uninstalled distribution (for possible rollback)
+        self.uninstalled = None
+        self.use_user_site = False
+        self.target_dir = None
+
+        self.pycompile = pycompile
+
+        self.isolated = isolated
+
+    @property
+    def url(self):
+        warnings.warn(
+            "The InstallRequirement.url attribute has been removed and should "
+            "not be used. It was temporary left here as a shim for projects "
+            "which used it even though it was not a public API.",
+            RemovedInPip7Warning,
+        )
+
+        return self.link.url
+
+    @classmethod
+    def from_editable(cls, editable_req, comes_from=None, default_vcs=None,
+                      isolated=False):
+        from pip.index import Link
+
+        name, url, extras_override, editable_options = parse_editable(
+            editable_req, default_vcs)
+        if url.startswith('file:'):
+            source_dir = url_to_path(url)
+        else:
+            source_dir = None
+
+        res = cls(name, comes_from, source_dir=source_dir,
+                  editable=True,
+                  link=Link(url),
+                  editable_options=editable_options,
+                  isolated=isolated)
+
+        if extras_override is not None:
+            res.extras = extras_override
+
+        return res
+
+    @classmethod
+    def from_line(cls, name, comes_from=None, isolated=False):
+        """Creates an InstallRequirement from a name, which might be a
+        requirement, directory containing 'setup.py', filename, or URL.
+        """
+        from pip.index import Link
+
+        if is_url(name):
+            marker_sep = '; '
+        else:
+            marker_sep = ';'
+        if marker_sep in name:
+            name, markers = name.split(marker_sep, 1)
+            markers = markers.strip()
+            if not markers:
+                markers = None
+        else:
+            markers = None
+        name = name.strip()
+        req = None
+        path = os.path.normpath(os.path.abspath(name))
+        link = None
+
+        if is_url(name):
+            link = Link(name)
+        elif (os.path.isdir(path) and
+                (os.path.sep in name or name.startswith('.'))):
+            if not is_installable_dir(path):
+                raise InstallationError(
+                    "Directory %r is not installable. File 'setup.py' not "
+                    "found." % name
+                )
+            link = Link(path_to_url(name))
+        elif is_archive_file(path):
+            if not os.path.isfile(path):
+                logger.warning(
+                    'Requirement %r looks like a filename, but the file does '
+                    'not exist',
+                    name
+                )
+            link = Link(path_to_url(name))
+
+        # it's a local file, dir, or url
+        if link:
+            # Handle relative file URLs
+            if link.scheme == 'file' and re.search(r'\.\./', link.url):
+                link = Link(
+                    path_to_url(os.path.normpath(os.path.abspath(link.path))))
+            # wheel file
+            if link.is_wheel:
+                wheel = Wheel(link.filename)  # can raise InvalidWheelFilename
+                if not wheel.supported():
+                    raise UnsupportedWheel(
+                        "%s is not a supported wheel on this platform." %
+                        wheel.filename
+                    )
+                req = "%s==%s" % (wheel.name, wheel.version)
+            else:
+                # set the req to the egg fragment.  when it's not there, this
+                # will become an 'unnamed' requirement
+                req = link.egg_fragment
+
+        # a requirement specifier
+        else:
+            req = name
+
+        return cls(req, comes_from, link=link, markers=markers,
+                   isolated=isolated)
+
+    def __str__(self):
+        if self.req:
+            s = str(self.req)
+            if self.link:
+                s += ' from %s' % self.link.url
+        else:
+            s = self.link.url if self.link else None
+        if self.satisfied_by is not None:
+            s += ' in %s' % display_path(self.satisfied_by.location)
+        if self.comes_from:
+            if isinstance(self.comes_from, six.string_types):
+                comes_from = self.comes_from
+            else:
+                comes_from = self.comes_from.from_path()
+            if comes_from:
+                s += ' (from %s)' % comes_from
+        return s
+
+    def __repr__(self):
+        return '<%s object: %s editable=%r>' % (
+            self.__class__.__name__, str(self), self.editable)
+
+    def populate_link(self, finder, upgrade):
+        """Ensure that if a link can be found for this, that it is found.
+
+        Note that self.link may still be None - if Upgrade is False and the
+        requirement is already installed.
+        """
+        if self.link is None:
+            self.link = finder.find_requirement(self, upgrade)
+
+    @property
+    def specifier(self):
+        return self.req.specifier
+
+    def from_path(self):
+        if self.req is None:
+            return None
+        s = str(self.req)
+        if self.comes_from:
+            if isinstance(self.comes_from, six.string_types):
+                comes_from = self.comes_from
+            else:
+                comes_from = self.comes_from.from_path()
+            if comes_from:
+                s += '->' + comes_from
+        return s
+
+    def build_location(self, build_dir):
+        if self._temp_build_dir is not None:
+            return self._temp_build_dir
+        if self.req is None:
+            # for requirement via a path to a directory: the name of the
+            # package is not available yet so we create a temp directory
+            # Once run_egg_info will have run, we'll be able
+            # to fix it via _correct_build_location
+            self._temp_build_dir = tempfile.mkdtemp('-build', 'pip-')
+            self._ideal_build_dir = build_dir
+            return self._temp_build_dir
+        if self.editable:
+            name = self.name.lower()
+        else:
+            name = self.name
+        # FIXME: Is there a better place to create the build_dir? (hg and bzr
+        # need this)
+        if not os.path.exists(build_dir):
+            logger.debug('Creating directory %s', build_dir)
+            _make_build_dir(build_dir)
+        return os.path.join(build_dir, name)
+
+    def _correct_build_location(self):
+        """Move self._temp_build_dir to self._ideal_build_dir/self.req.name
+
+        For some requirements (e.g. a path to a directory), the name of the
+        package is not available until we run egg_info, so the build_location
+        will return a temporary directory and store the _ideal_build_dir.
+
+        This is only called by self.egg_info_path to fix the temporary build
+        directory.
+        """
+        if self.source_dir is not None:
+            return
+        assert self.req is not None
+        assert self._temp_build_dir
+        assert self._ideal_build_dir
+        old_location = self._temp_build_dir
+        self._temp_build_dir = None
+        new_location = self.build_location(self._ideal_build_dir)
+        if os.path.exists(new_location):
+            raise InstallationError(
+                'A package already exists in %s; please remove it to continue'
+                % display_path(new_location))
+        logger.debug(
+            'Moving package %s from %s to new location %s',
+            self, display_path(old_location), display_path(new_location),
+        )
+        shutil.move(old_location, new_location)
+        self._temp_build_dir = new_location
+        self._ideal_build_dir = None
+        self.source_dir = new_location
+        self._egg_info_path = None
+
+    @property
+    def name(self):
+        if self.req is None:
+            return None
+        return native_str(self.req.project_name)
+
+    @property
+    def setup_py(self):
+        assert self.source_dir, "No source dir for %s" % self
+        try:
+            import setuptools  # noqa
+        except ImportError:
+            # Setuptools is not available
+            raise InstallationError(
+                "setuptools must be installed to install from a source "
+                "distribution"
+            )
+
+        setup_file = 'setup.py'
+
+        if self.editable_options and 'subdirectory' in self.editable_options:
+            setup_py = os.path.join(self.source_dir,
+                                    self.editable_options['subdirectory'],
+                                    setup_file)
+
+        else:
+            setup_py = os.path.join(self.source_dir, setup_file)
+
+        # Python2 __file__ should not be unicode
+        if six.PY2 and isinstance(setup_py, six.text_type):
+            setup_py = setup_py.encode(sys.getfilesystemencoding())
+
+        return setup_py
+
+    def run_egg_info(self):
+        assert self.source_dir
+        if self.name:
+            logger.debug(
+                'Running setup.py (path:%s) egg_info for package %s',
+                self.setup_py, self.name,
+            )
+        else:
+            logger.debug(
+                'Running setup.py (path:%s) egg_info for package from %s',
+                self.setup_py, self.link,
+            )
+
+        with indent_log():
+            # if it's distribute>=0.7, it won't contain an importable
+            # setuptools, and having an egg-info dir blocks the ability of
+            # setup.py to find setuptools plugins, so delete the egg-info dir
+            # if no setuptools. it will get recreated by the run of egg_info
+            # NOTE: this self.name check only works when installing from a
+            #       specifier (not archive path/urls)
+            # TODO: take this out later
+            if (self.name == 'distribute' and not
+                    os.path.isdir(
+                        os.path.join(self.source_dir, 'setuptools'))):
+                rmtree(os.path.join(self.source_dir, 'distribute.egg-info'))
+
+            script = self._run_setup_py
+            script = script.replace('__SETUP_PY__', repr(self.setup_py))
+            script = script.replace('__PKG_NAME__', repr(self.name))
+            base_cmd = [sys.executable, '-c', script]
+            if self.isolated:
+                base_cmd += ["--no-user-cfg"]
+            egg_info_cmd = base_cmd + ['egg_info']
+            # We can't put the .egg-info files at the root, because then the
+            # source code will be mistaken for an installed egg, causing
+            # problems
+            if self.editable:
+                egg_base_option = []
+            else:
+                egg_info_dir = os.path.join(self.source_dir, 'pip-egg-info')
+                if not os.path.exists(egg_info_dir):
+                    os.makedirs(egg_info_dir)
+                egg_base_option = ['--egg-base', 'pip-egg-info']
+            cwd = self.source_dir
+            if self.editable_options and \
+                    'subdirectory' in self.editable_options:
+                cwd = os.path.join(cwd, self.editable_options['subdirectory'])
+            call_subprocess(
+                egg_info_cmd + egg_base_option,
+                cwd=cwd,
+                filter_stdout=_filter_install,
+                show_stdout=False,
+                command_level=logging.DEBUG,
+                command_desc='python setup.py egg_info')
+
+        if not self.req:
+            if isinstance(
+                    pkg_resources.parse_version(self.pkg_info()["Version"]),
+                    Version):
+                op = "=="
+            else:
+                op = "==="
+            self.req = pkg_resources.Requirement.parse(
+                "".join([
+                    self.pkg_info()["Name"],
+                    op,
+                    self.pkg_info()["Version"],
+                ]))
+            self._correct_build_location()
+
+    # FIXME: This is a lame hack, entirely for PasteScript which has
+    # a self-provided entry point that causes this awkwardness
+    _run_setup_py = """
+__file__ = __SETUP_PY__
+from setuptools.command import egg_info
+import pkg_resources
+import os
+import tokenize
+def replacement_run(self):
+    self.mkpath(self.egg_info)
+    installer = self.distribution.fetch_build_egg
+    for ep in pkg_resources.iter_entry_points('egg_info.writers'):
+        # require=False is the change we're making:
+        writer = ep.load(require=False)
+        if writer:
+            writer(self, ep.name, os.path.join(self.egg_info,ep.name))
+    self.find_sources()
+egg_info.egg_info.run = replacement_run
+exec(compile(
+    getattr(tokenize, 'open', open)(__file__).read().replace('\\r\\n', '\\n'),
+    __file__,
+    'exec'
+))
+"""
+
+    def egg_info_data(self, filename):
+        if self.satisfied_by is not None:
+            if not self.satisfied_by.has_metadata(filename):
+                return None
+            return self.satisfied_by.get_metadata(filename)
+        assert self.source_dir
+        filename = self.egg_info_path(filename)
+        if not os.path.exists(filename):
+            return None
+        data = read_text_file(filename)
+        return data
+
+    def egg_info_path(self, filename):
+        if self._egg_info_path is None:
+            if self.editable:
+                base = self.source_dir
+            else:
+                base = os.path.join(self.source_dir, 'pip-egg-info')
+            filenames = os.listdir(base)
+            if self.editable:
+                filenames = []
+                for root, dirs, files in os.walk(base):
+                    for dir in vcs.dirnames:
+                        if dir in dirs:
+                            dirs.remove(dir)
+                    # Iterate over a copy of ``dirs``, since mutating
+                    # a list while iterating over it can cause trouble.
+                    # (See https://github.com/pypa/pip/pull/462.)
+                    for dir in list(dirs):
+                        # Don't search in anything that looks like a virtualenv
+                        # environment
+                        if (
+                                os.path.exists(
+                                    os.path.join(root, dir, 'bin', 'python')
+                                ) or
+                                os.path.exists(
+                                    os.path.join(
+                                        root, dir, 'Scripts', 'Python.exe'
+                                    )
+                                )):
+                            dirs.remove(dir)
+                        # Also don't search through tests
+                        elif dir == 'test' or dir == 'tests':
+                            dirs.remove(dir)
+                    filenames.extend([os.path.join(root, dir)
+                                     for dir in dirs])
+                filenames = [f for f in filenames if f.endswith('.egg-info')]
+
+            if not filenames:
+                raise InstallationError(
+                    'No files/directories in %s (from %s)' % (base, filename)
+                )
+            assert filenames, \
+                "No files/directories in %s (from %s)" % (base, filename)
+
+            # if we have more than one match, we pick the toplevel one.  This
+            # can easily be the case if there is a dist folder which contains
+            # an extracted tarball for testing purposes.
+            if len(filenames) > 1:
+                filenames.sort(
+                    key=lambda x: x.count(os.path.sep) +
+                    (os.path.altsep and x.count(os.path.altsep) or 0)
+                )
+            self._egg_info_path = os.path.join(base, filenames[0])
+        return os.path.join(self._egg_info_path, filename)
+
+    def pkg_info(self):
+        p = FeedParser()
+        data = self.egg_info_data('PKG-INFO')
+        if not data:
+            logger.warning(
+                'No PKG-INFO file found in %s',
+                display_path(self.egg_info_path('PKG-INFO')),
+            )
+        p.feed(data or '')
+        return p.close()
+
+    _requirements_section_re = re.compile(r'\[(.*?)\]')
+
+    @property
+    def installed_version(self):
+        # Create a requirement that we'll look for inside of setuptools.
+        req = pkg_resources.Requirement.parse(self.name)
+
+        # We want to avoid having this cached, so we need to construct a new
+        # working set each time.
+        working_set = pkg_resources.WorkingSet()
+
+        # Get the installed distribution from our working set
+        dist = working_set.find(req)
+
+        # Check to see if we got an installed distribution or not, if we did
+        # we want to return it's version.
+        if dist:
+            return dist.version
+
+    def assert_source_matches_version(self):
+        assert self.source_dir
+        version = self.pkg_info()['version']
+        if version not in self.req:
+            logger.warning(
+                'Requested %s, but installing version %s',
+                self,
+                self.installed_version,
+            )
+        else:
+            logger.debug(
+                'Source in %s has version %s, which satisfies requirement %s',
+                display_path(self.source_dir),
+                version,
+                self,
+            )
+
+    def update_editable(self, obtain=True):
+        if not self.link:
+            logger.debug(
+                "Cannot update repository at %s; repository location is "
+                "unknown",
+                self.source_dir,
+            )
+            return
+        assert self.editable
+        assert self.source_dir
+        if self.link.scheme == 'file':
+            # Static paths don't get updated
+            return
+        assert '+' in self.link.url, "bad url: %r" % self.link.url
+        if not self.update:
+            return
+        vc_type, url = self.link.url.split('+', 1)
+        backend = vcs.get_backend(vc_type)
+        if backend:
+            vcs_backend = backend(self.link.url)
+            if obtain:
+                vcs_backend.obtain(self.source_dir)
+            else:
+                vcs_backend.export(self.source_dir)
+        else:
+            assert 0, (
+                'Unexpected version control type (in %s): %s'
+                % (self.link, vc_type))
+
+    def uninstall(self, auto_confirm=False):
+        """
+        Uninstall the distribution currently satisfying this requirement.
+
+        Prompts before removing or modifying files unless
+        ``auto_confirm`` is True.
+
+        Refuses to delete or modify files outside of ``sys.prefix`` -
+        thus uninstallation within a virtual environment can only
+        modify that virtual environment, even if the virtualenv is
+        linked to global site-packages.
+
+        """
+        if not self.check_if_exists():
+            raise UninstallationError(
+                "Cannot uninstall requirement %s, not installed" % (self.name,)
+            )
+        dist = self.satisfied_by or self.conflicts_with
+
+        paths_to_remove = UninstallPathSet(dist)
+        develop_egg_link = egg_link_path(dist)
+        develop_egg_link_egg_info = '{0}.egg-info'.format(
+            pkg_resources.to_filename(dist.project_name))
+        egg_info_exists = dist.egg_info and os.path.exists(dist.egg_info)
+        # Special case for distutils installed package
+        distutils_egg_info = getattr(dist._provider, 'path', None)
+
+        # Uninstall cases order do matter as in the case of 2 installs of the
+        # same package, pip needs to uninstall the currently detected version
+        if (egg_info_exists and dist.egg_info.endswith('.egg-info') and
+                not dist.egg_info.endswith(develop_egg_link_egg_info)):
+            # if dist.egg_info.endswith(develop_egg_link_egg_info), we
+            # are in fact in the develop_egg_link case
+            paths_to_remove.add(dist.egg_info)
+            if dist.has_metadata('installed-files.txt'):
+                for installed_file in dist.get_metadata(
+                        'installed-files.txt').splitlines():
+                    path = os.path.normpath(
+                        os.path.join(dist.egg_info, installed_file)
+                    )
+                    paths_to_remove.add(path)
+            # FIXME: need a test for this elif block
+            # occurs with --single-version-externally-managed/--record outside
+            # of pip
+            elif dist.has_metadata('top_level.txt'):
+                if dist.has_metadata('namespace_packages.txt'):
+                    namespaces = dist.get_metadata('namespace_packages.txt')
+                else:
+                    namespaces = []
+                for top_level_pkg in [
+                        p for p
+                        in dist.get_metadata('top_level.txt').splitlines()
+                        if p and p not in namespaces]:
+                    path = os.path.join(dist.location, top_level_pkg)
+                    paths_to_remove.add(path)
+                    paths_to_remove.add(path + '.py')
+                    paths_to_remove.add(path + '.pyc')
+
+        elif distutils_egg_info:
+            warnings.warn(
+                "Uninstalling a distutils installed project ({0}) has been "
+                "deprecated and will be removed in a future version. This is "
+                "due to the fact that uninstalling a distutils project will "
+                "only partially uninstall the project.".format(self.name),
+                RemovedInPip8Warning,
+            )
+            paths_to_remove.add(distutils_egg_info)
+
+        elif dist.location.endswith('.egg'):
+            # package installed by easy_install
+            # We cannot match on dist.egg_name because it can slightly vary
+            # i.e. setuptools-0.6c11-py2.6.egg vs setuptools-0.6rc11-py2.6.egg
+            paths_to_remove.add(dist.location)
+            easy_install_egg = os.path.split(dist.location)[1]
+            easy_install_pth = os.path.join(os.path.dirname(dist.location),
+                                            'easy-install.pth')
+            paths_to_remove.add_pth(easy_install_pth, './' + easy_install_egg)
+
+        elif develop_egg_link:
+            # develop egg
+            with open(develop_egg_link, 'r') as fh:
+                link_pointer = os.path.normcase(fh.readline().strip())
+            assert (link_pointer == dist.location), (
+                'Egg-link %s does not match installed location of %s '
+                '(at %s)' % (link_pointer, self.name, dist.location)
+            )
+            paths_to_remove.add(develop_egg_link)
+            easy_install_pth = os.path.join(os.path.dirname(develop_egg_link),
+                                            'easy-install.pth')
+            paths_to_remove.add_pth(easy_install_pth, dist.location)
+
+        elif egg_info_exists and dist.egg_info.endswith('.dist-info'):
+            for path in pip.wheel.uninstallation_paths(dist):
+                paths_to_remove.add(path)
+
+        else:
+            logger.debug(
+                'Not sure how to uninstall: %s - Check: %s',
+                dist, dist.location)
+
+        # find distutils scripts= scripts
+        if dist.has_metadata('scripts') and dist.metadata_isdir('scripts'):
+            for script in dist.metadata_listdir('scripts'):
+                if dist_in_usersite(dist):
+                    bin_dir = bin_user
+                else:
+                    bin_dir = bin_py
+                paths_to_remove.add(os.path.join(bin_dir, script))
+                if WINDOWS:
+                    paths_to_remove.add(os.path.join(bin_dir, script) + '.bat')
+
+        # find console_scripts
+        if dist.has_metadata('entry_points.txt'):
+            config = configparser.SafeConfigParser()
+            config.readfp(
+                FakeFile(dist.get_metadata_lines('entry_points.txt'))
+            )
+            if config.has_section('console_scripts'):
+                for name, value in config.items('console_scripts'):
+                    if dist_in_usersite(dist):
+                        bin_dir = bin_user
+                    else:
+                        bin_dir = bin_py
+                    paths_to_remove.add(os.path.join(bin_dir, name))
+                    if WINDOWS:
+                        paths_to_remove.add(
+                            os.path.join(bin_dir, name) + '.exe'
+                        )
+                        paths_to_remove.add(
+                            os.path.join(bin_dir, name) + '.exe.manifest'
+                        )
+                        paths_to_remove.add(
+                            os.path.join(bin_dir, name) + '-script.py'
+                        )
+
+        paths_to_remove.remove(auto_confirm)
+        self.uninstalled = paths_to_remove
+
+    def rollback_uninstall(self):
+        if self.uninstalled:
+            self.uninstalled.rollback()
+        else:
+            logger.error(
+                "Can't rollback %s, nothing uninstalled.", self.project_name,
+            )
+
+    def commit_uninstall(self):
+        if self.uninstalled:
+            self.uninstalled.commit()
+        else:
+            logger.error(
+                "Can't commit %s, nothing uninstalled.", self.project_name,
+            )
+
+    def archive(self, build_dir):
+        assert self.source_dir
+        create_archive = True
+        archive_name = '%s-%s.zip' % (self.name, self.pkg_info()["version"])
+        archive_path = os.path.join(build_dir, archive_name)
+        if os.path.exists(archive_path):
+            response = ask_path_exists(
+                'The file %s exists. (i)gnore, (w)ipe, (b)ackup ' %
+                display_path(archive_path), ('i', 'w', 'b'))
+            if response == 'i':
+                create_archive = False
+            elif response == 'w':
+                logger.warning('Deleting %s', display_path(archive_path))
+                os.remove(archive_path)
+            elif response == 'b':
+                dest_file = backup_dir(archive_path)
+                logger.warning(
+                    'Backing up %s to %s',
+                    display_path(archive_path),
+                    display_path(dest_file),
+                )
+                shutil.move(archive_path, dest_file)
+        if create_archive:
+            zip = zipfile.ZipFile(
+                archive_path, 'w', zipfile.ZIP_DEFLATED,
+                allowZip64=True
+            )
+            dir = os.path.normcase(os.path.abspath(self.source_dir))
+            for dirpath, dirnames, filenames in os.walk(dir):
+                if 'pip-egg-info' in dirnames:
+                    dirnames.remove('pip-egg-info')
+                for dirname in dirnames:
+                    dirname = os.path.join(dirpath, dirname)
+                    name = self._clean_zip_name(dirname, dir)
+                    zipdir = zipfile.ZipInfo(self.name + '/' + name + '/')
+                    zipdir.external_attr = 0x1ED << 16  # 0o755
+                    zip.writestr(zipdir, '')
+                for filename in filenames:
+                    if filename == PIP_DELETE_MARKER_FILENAME:
+                        continue
+                    filename = os.path.join(dirpath, filename)
+                    name = self._clean_zip_name(filename, dir)
+                    zip.write(filename, self.name + '/' + name)
+            zip.close()
+            logger.info('Saved %s', display_path(archive_path))
+
+    def _clean_zip_name(self, name, prefix):
+        assert name.startswith(prefix + os.path.sep), (
+            "name %r doesn't start with prefix %r" % (name, prefix)
+        )
+        name = name[len(prefix) + 1:]
+        name = name.replace(os.path.sep, '/')
+        return name
+
+    def match_markers(self):
+        if self.markers is not None:
+            return markers_interpret(self.markers)
+        else:
+            return True
+
+    def install(self, install_options, global_options=(), root=None):
+        if self.editable:
+            self.install_editable(install_options, global_options)
+            return
+        if self.is_wheel:
+            version = pip.wheel.wheel_version(self.source_dir)
+            pip.wheel.check_compatibility(version, self.name)
+
+            self.move_wheel_files(self.source_dir, root=root)
+            self.install_succeeded = True
+            return
+
+        if self.isolated:
+            global_options = list(global_options) + ["--no-user-cfg"]
+
+        temp_location = tempfile.mkdtemp('-record', 'pip-')
+        record_filename = os.path.join(temp_location, 'install-record.txt')
+        try:
+            install_args = [sys.executable]
+            install_args.append('-c')
+            install_args.append(
+                "import setuptools, tokenize;__file__=%r;"
+                "exec(compile(getattr(tokenize, 'open', open)(__file__).read()"
+                ".replace('\\r\\n', '\\n'), __file__, 'exec'))" % self.setup_py
+            )
+            install_args += list(global_options) + \
+                ['install', '--record', record_filename]
+
+            if not self.as_egg:
+                install_args += ['--single-version-externally-managed']
+
+            if root is not None:
+                install_args += ['--root', root]
+
+            if self.pycompile:
+                install_args += ["--compile"]
+            else:
+                install_args += ["--no-compile"]
+
+            if running_under_virtualenv():
+                py_ver_str = 'python' + sysconfig.get_python_version()
+                install_args += ['--install-headers',
+                                 os.path.join(sys.prefix, 'include', 'site',
+                                              py_ver_str, self.name)]
+            logger.info('Running setup.py install for %s', self.name)
+            with indent_log():
+                call_subprocess(
+                    install_args + install_options,
+                    cwd=self.source_dir,
+                    filter_stdout=_filter_install,
+                    show_stdout=False,
+                )
+
+            if not os.path.exists(record_filename):
+                logger.debug('Record file %s not found', record_filename)
+                return
+            self.install_succeeded = True
+            if self.as_egg:
+                # there's no --always-unzip option we can pass to install
+                # command so we unable to save the installed-files.txt
+                return
+
+            def prepend_root(path):
+                if root is None or not os.path.isabs(path):
+                    return path
+                else:
+                    return change_root(root, path)
+
+            with open(record_filename) as f:
+                for line in f:
+                    directory = os.path.dirname(line)
+                    if directory.endswith('.egg-info'):
+                        egg_info_dir = prepend_root(directory)
+                        break
+                else:
+                    logger.warning(
+                        'Could not find .egg-info directory in install record'
+                        ' for %s',
+                        self,
+                    )
+                    # FIXME: put the record somewhere
+                    # FIXME: should this be an error?
+                    return
+            new_lines = []
+            with open(record_filename) as f:
+                for line in f:
+                    filename = line.strip()
+                    if os.path.isdir(filename):
+                        filename += os.path.sep
+                    new_lines.append(
+                        make_path_relative(
+                            prepend_root(filename), egg_info_dir)
+                    )
+            inst_files_path = os.path.join(egg_info_dir, 'installed-files.txt')
+            with open(inst_files_path, 'w') as f:
+                f.write('\n'.join(new_lines) + '\n')
+        finally:
+            if os.path.exists(record_filename):
+                os.remove(record_filename)
+            rmtree(temp_location)
+
+    def ensure_has_source_dir(self, parent_dir):
+        """Ensure that a source_dir is set.
+
+        This will create a temporary build dir if the name of the requirement
+        isn't known yet.
+
+        :param parent_dir: The ideal pip parent_dir for the source_dir.
+            Generally src_dir for editables and build_dir for sdists.
+        :return: self.source_dir
+        """
+        if self.source_dir is None:
+            self.source_dir = self.build_location(parent_dir)
+        return self.source_dir
+
+    def remove_temporary_source(self):
+        """Remove the source files from this requirement, if they are marked
+        for deletion"""
+        if self.source_dir and os.path.exists(
+                os.path.join(self.source_dir, PIP_DELETE_MARKER_FILENAME)):
+            logger.debug('Removing source in %s', self.source_dir)
+            rmtree(self.source_dir)
+        self.source_dir = None
+        if self._temp_build_dir and os.path.exists(self._temp_build_dir):
+            rmtree(self._temp_build_dir)
+        self._temp_build_dir = None
+
+    def install_editable(self, install_options, global_options=()):
+        logger.info('Running setup.py develop for %s', self.name)
+
+        if self.isolated:
+            global_options = list(global_options) + ["--no-user-cfg"]
+
+        with indent_log():
+            # FIXME: should we do --install-headers here too?
+            cwd = self.source_dir
+            if self.editable_options and \
+                    'subdirectory' in self.editable_options:
+                cwd = os.path.join(cwd, self.editable_options['subdirectory'])
+            call_subprocess(
+                [
+                    sys.executable,
+                    '-c',
+                    "import setuptools, tokenize; __file__=%r; exec(compile("
+                    "getattr(tokenize, 'open', open)(__file__).read().replace"
+                    "('\\r\\n', '\\n'), __file__, 'exec'))" % self.setup_py
+                ] +
+                list(global_options) +
+                ['develop', '--no-deps'] +
+                list(install_options),
+
+                cwd=cwd, filter_stdout=self._filter_install,
+                show_stdout=False)
+
+        self.install_succeeded = True
+
+    def _filter_install(self, line):
+        return _filter_install(line)
+
+    def check_if_exists(self):
+        """Find an installed distribution that satisfies or conflicts
+        with this requirement, and set self.satisfied_by or
+        self.conflicts_with appropriately.
+        """
+        if self.req is None:
+            return False
+        try:
+            # DISTRIBUTE TO SETUPTOOLS UPGRADE HACK (1 of 3 parts)
+            # if we've already set distribute as a conflict to setuptools
+            # then this check has already run before.  we don't want it to
+            # run again, and return False, since it would block the uninstall
+            # TODO: remove this later
+            if (self.req.project_name == 'setuptools' and
+                    self.conflicts_with and
+                    self.conflicts_with.project_name == 'distribute'):
+                return True
+            else:
+                self.satisfied_by = pkg_resources.get_distribution(self.req)
+        except pkg_resources.DistributionNotFound:
+            return False
+        except pkg_resources.VersionConflict:
+            existing_dist = pkg_resources.get_distribution(
+                self.req.project_name
+            )
+            if self.use_user_site:
+                if dist_in_usersite(existing_dist):
+                    self.conflicts_with = existing_dist
+                elif (running_under_virtualenv() and
+                        dist_in_site_packages(existing_dist)):
+                    raise InstallationError(
+                        "Will not install to the user site because it will "
+                        "lack sys.path precedence to %s in %s" %
+                        (existing_dist.project_name, existing_dist.location)
+                    )
+            else:
+                self.conflicts_with = existing_dist
+        return True
+
+    @property
+    def is_wheel(self):
+        return self.link and self.link.is_wheel
+
+    def move_wheel_files(self, wheeldir, root=None):
+        move_wheel_files(
+            self.name, self.req, wheeldir,
+            user=self.use_user_site,
+            home=self.target_dir,
+            root=root,
+            pycompile=self.pycompile,
+            isolated=self.isolated,
+        )
+
+    def get_dist(self):
+        """Return a pkg_resources.Distribution built from self.egg_info_path"""
+        egg_info = self.egg_info_path('').rstrip('/')
+        base_dir = os.path.dirname(egg_info)
+        metadata = pkg_resources.PathMetadata(base_dir, egg_info)
+        dist_name = os.path.splitext(os.path.basename(egg_info))[0]
+        return pkg_resources.Distribution(
+            os.path.dirname(egg_info),
+            project_name=dist_name,
+            metadata=metadata)
+
+
+def _strip_postfix(req):
+    """
+        Strip req postfix ( -dev, 0.2, etc )
+    """
+    # FIXME: use package_to_requirement?
+    match = re.search(r'^(.*?)(?:-dev|-\d.*)$', req)
+    if match:
+        # Strip off -dev, -0.2, etc.
+        req = match.group(1)
+    return req
+
+
+def _build_req_from_url(url):
+
+    parts = [p for p in url.split('#', 1)[0].split('/') if p]
+
+    req = None
+    if parts[-2] in ('tags', 'branches', 'tag', 'branch'):
+        req = parts[-3]
+    elif parts[-1] == 'trunk':
+        req = parts[-2]
+    return req
+
+
+def _build_editable_options(req):
+
+    """
+        This method generates a dictionary of the query string
+        parameters contained in a given editable URL.
+    """
+    regexp = re.compile(r"[\?#&](?P<name>[^&=]+)=(?P<value>[^&=]+)")
+    matched = regexp.findall(req)
+
+    if matched:
+        ret = dict()
+        for option in matched:
+            (name, value) = option
+            if name in ret:
+                raise Exception("%s option already defined" % name)
+            ret[name] = value
+        return ret
+    return None
+
+
+def parse_editable(editable_req, default_vcs=None):
+    """Parses an editable requirement into:
+        - a requirement name
+        - an URL
+        - extras
+        - editable options
+    Accepted requirements:
+        svn+http://blahblah@rev#egg=Foobar[baz]&subdirectory=version_subdir
+        .[some_extra]
+    """
+
+    url = editable_req
+    extras = None
+
+    # If a file path is specified with extras, strip off the extras.
+    m = re.match(r'^(.+)(\[[^\]]+\])$', url)
+    if m:
+        url_no_extras = m.group(1)
+        extras = m.group(2)
+    else:
+        url_no_extras = url
+
+    if os.path.isdir(url_no_extras):
+        if not os.path.exists(os.path.join(url_no_extras, 'setup.py')):
+            raise InstallationError(
+                "Directory %r is not installable. File 'setup.py' not found." %
+                url_no_extras
+            )
+        # Treating it as code that has already been checked out
+        url_no_extras = path_to_url(url_no_extras)
+
+    if url_no_extras.lower().startswith('file:'):
+        if extras:
+            return (
+                None,
+                url_no_extras,
+                pkg_resources.Requirement.parse(
+                    '__placeholder__' + extras
+                ).extras,
+                {},
+            )
+        else:
+            return None, url_no_extras, None, {}
+
+    for version_control in vcs:
+        if url.lower().startswith('%s:' % version_control):
+            url = '%s+%s' % (version_control, url)
+            break
+
+    if '+' not in url:
+        if default_vcs:
+            url = default_vcs + '+' + url
+        else:
+            raise InstallationError(
+                '%s should either be a path to a local project or a VCS url '
+                'beginning with svn+, git+, hg+, or bzr+' %
+                editable_req
+            )
+
+    vc_type = url.split('+', 1)[0].lower()
+
+    if not vcs.get_backend(vc_type):
+        error_message = 'For --editable=%s only ' % editable_req + \
+            ', '.join([backend.name + '+URL' for backend in vcs.backends]) + \
+            ' is currently supported'
+        raise InstallationError(error_message)
+
+    try:
+        options = _build_editable_options(editable_req)
+    except Exception as exc:
+        raise InstallationError(
+            '--editable=%s error in editable options:%s' % (editable_req, exc)
+        )
+    if not options or 'egg' not in options:
+        req = _build_req_from_url(editable_req)
+        if not req:
+            raise InstallationError(
+                '--editable=%s is not the right format; it must have '
+                '#egg=Package' % editable_req
+            )
+    else:
+        req = options['egg']
+
+    package = _strip_postfix(req)
+    return package, url, None, options