reupload

env/lib/python3.6/site-packages/wheel/archive.py

@@ -0,0 +1,77 @@
+"""
+Archive tools for wheel.
+"""
+
+import os
+import os.path
+import time
+import zipfile
+from distutils import log
+
+
+def archive_wheelfile(base_name, base_dir):
+    """Archive all files under `base_dir` in a whl file and name it like
+    `base_name`.
+    """
+    olddir = os.path.abspath(os.curdir)
+    base_name = os.path.abspath(base_name)
+    try:
+        os.chdir(base_dir)
+        return make_wheelfile_inner(base_name)
+    finally:
+        os.chdir(olddir)
+
+
+def make_wheelfile_inner(base_name, base_dir='.'):
+    """Create a whl file from all the files under 'base_dir'.
+
+    Places .dist-info at the end of the archive."""
+
+    zip_filename = base_name + ".whl"
+
+    log.info("creating '%s' and adding '%s' to it", zip_filename, base_dir)
+
+    # Some applications need reproducible .whl files, but they can't do this
+    # without forcing the timestamp of the individual ZipInfo objects.  See
+    # issue #143.
+    timestamp = os.environ.get('SOURCE_DATE_EPOCH')
+    if timestamp is None:
+        date_time = None
+    else:
+        date_time = time.gmtime(int(timestamp))[0:6]
+
+    score = {'WHEEL': 1, 'METADATA': 2, 'RECORD': 3}
+
+    def writefile(path, date_time):
+        st = os.stat(path)
+        if date_time is None:
+            mtime = time.gmtime(st.st_mtime)
+            date_time = mtime[0:6]
+        zinfo = zipfile.ZipInfo(path, date_time)
+        zinfo.external_attr = st.st_mode << 16
+        zinfo.compress_type = zipfile.ZIP_DEFLATED
+        with open(path, 'rb') as fp:
+            zip.writestr(zinfo, fp.read())
+        log.info("adding '%s'" % path)
+
+    with zipfile.ZipFile(zip_filename, "w", compression=zipfile.ZIP_DEFLATED,
+                         allowZip64=True) as zip:
+        deferred = []
+        for dirpath, dirnames, filenames in os.walk(base_dir):
+            # Sort the directory names so that `os.walk` will walk them in a
+            # defined order on the next iteration.
+            dirnames.sort()
+            for name in sorted(filenames):
+                path = os.path.normpath(os.path.join(dirpath, name))
+
+                if os.path.isfile(path):
+                    if dirpath.endswith('.dist-info'):
+                        deferred.append((score.get(name, 0), path))
+                    else:
+                        writefile(path, date_time)
+
+        deferred.sort()
+        for score, path in deferred:
+            writefile(path, date_time)
+
+    return zip_filename

env/lib/python3.6/site-packages/wheel/bdist_wheel.py

@@ -0,0 +1,409 @@
+"""
+Create a wheel (.whl) distribution.
+
+A wheel is a built archive format.
+"""
+
+import csv
+import hashlib
+import os
+import subprocess
+import shutil
+import sys
+import re
+from email.generator import Generator
+from distutils.core import Command
+from distutils.sysconfig import get_python_version
+from distutils import log as logger
+from shutil import rmtree
+
+import pkg_resources
+
+from .pep425tags import get_abbr_impl, get_impl_ver, get_abi_tag, get_platform
+from .util import native, open_for_csv
+from .archive import archive_wheelfile
+from .pkginfo import write_pkg_info
+from .metadata import pkginfo_to_metadata
+from . import pep425tags
+from . import __version__ as wheel_version
+
+
+safe_name = pkg_resources.safe_name
+safe_version = pkg_resources.safe_version
+
+PY_LIMITED_API_PATTERN = r'cp3\d'
+
+
+def safer_name(name):
+    return safe_name(name).replace('-', '_')
+
+
+def safer_version(version):
+    return safe_version(version).replace('-', '_')
+
+
+class bdist_wheel(Command):
+
+    description = 'create a wheel distribution'
+
+    user_options = [('bdist-dir=', 'b',
+                     "temporary directory for creating the distribution"),
+                    ('plat-name=', 'p',
+                     "platform name to embed in generated filenames "
+                     "(default: %s)" % get_platform()),
+                    ('keep-temp', 'k',
+                     "keep the pseudo-installation tree around after " +
+                     "creating the distribution archive"),
+                    ('dist-dir=', 'd',
+                     "directory to put final built distributions in"),
+                    ('skip-build', None,
+                     "skip rebuilding everything (for testing/debugging)"),
+                    ('relative', None,
+                     "build the archive using relative paths"
+                     "(default: false)"),
+                    ('owner=', 'u',
+                     "Owner name used when creating a tar file"
+                     " [default: current user]"),
+                    ('group=', 'g',
+                     "Group name used when creating a tar file"
+                     " [default: current group]"),
+                    ('universal', None,
+                     "make a universal wheel"
+                     " (default: false)"),
+                    ('python-tag=', None,
+                     "Python implementation compatibility tag"
+                     " (default: py%s)" % get_impl_ver()[0]),
+                    ('build-number=', None,
+                     "Build number for this particular version. "
+                     "As specified in PEP-0427, this must start with a digit. "
+                     "[default: None]"),
+                    ('py-limited-api=', None,
+                     "Python tag (cp32|cp33|cpNN) for abi3 wheel tag"
+                     " (default: false)"),
+                    ]
+
+    boolean_options = ['keep-temp', 'skip-build', 'relative', 'universal']
+
+    def initialize_options(self):
+        self.bdist_dir = None
+        self.data_dir = None
+        self.plat_name = None
+        self.plat_tag = None
+        self.format = 'zip'
+        self.keep_temp = False
+        self.dist_dir = None
+        self.distinfo_dir = None
+        self.egginfo_dir = None
+        self.root_is_pure = None
+        self.skip_build = None
+        self.relative = False
+        self.owner = None
+        self.group = None
+        self.universal = False
+        self.python_tag = 'py' + get_impl_ver()[0]
+        self.build_number = None
+        self.py_limited_api = False
+        self.plat_name_supplied = False
+
+    def finalize_options(self):
+        if self.bdist_dir is None:
+            bdist_base = self.get_finalized_command('bdist').bdist_base
+            self.bdist_dir = os.path.join(bdist_base, 'wheel')
+
+        self.data_dir = self.wheel_dist_name + '.data'
+        self.plat_name_supplied = self.plat_name is not None
+
+        need_options = ('dist_dir', 'plat_name', 'skip_build')
+
+        self.set_undefined_options('bdist',
+                                   *zip(need_options, need_options))
+
+        self.root_is_pure = not (self.distribution.has_ext_modules()
+                                 or self.distribution.has_c_libraries())
+
+        if self.py_limited_api and not re.match(PY_LIMITED_API_PATTERN, self.py_limited_api):
+            raise ValueError("py-limited-api must match '%s'" % PY_LIMITED_API_PATTERN)
+
+        # Support legacy [wheel] section for setting universal
+        wheel = self.distribution.get_option_dict('wheel')
+        if 'universal' in wheel:
+            # please don't define this in your global configs
+            val = wheel['universal'][1].strip()
+            if val.lower() in ('1', 'true', 'yes'):
+                self.universal = True
+
+        if self.build_number is not None and not self.build_number[:1].isdigit():
+            raise ValueError("Build tag (build-number) must start with a digit.")
+
+    @property
+    def wheel_dist_name(self):
+        """Return distribution full name with - replaced with _"""
+        components = (safer_name(self.distribution.get_name()),
+                      safer_version(self.distribution.get_version()))
+        if self.build_number:
+            components += (self.build_number,)
+        return '-'.join(components)
+
+    def get_tag(self):
+        # bdist sets self.plat_name if unset, we should only use it for purepy
+        # wheels if the user supplied it.
+        if self.plat_name_supplied:
+            plat_name = self.plat_name
+        elif self.root_is_pure:
+            plat_name = 'any'
+        else:
+            plat_name = self.plat_name or get_platform()
+            if plat_name in ('linux-x86_64', 'linux_x86_64') and sys.maxsize == 2147483647:
+                plat_name = 'linux_i686'
+        plat_name = plat_name.replace('-', '_').replace('.', '_')
+
+        if self.root_is_pure:
+            if self.universal:
+                impl = 'py2.py3'
+            else:
+                impl = self.python_tag
+            tag = (impl, 'none', plat_name)
+        else:
+            impl_name = get_abbr_impl()
+            impl_ver = get_impl_ver()
+            impl = impl_name + impl_ver
+            # We don't work on CPython 3.1, 3.0.
+            if self.py_limited_api and (impl_name + impl_ver).startswith('cp3'):
+                impl = self.py_limited_api
+                abi_tag = 'abi3'
+            else:
+                abi_tag = str(get_abi_tag()).lower()
+            tag = (impl, abi_tag, plat_name)
+            supported_tags = pep425tags.get_supported(
+                supplied_platform=plat_name if self.plat_name_supplied else None)
+            # XXX switch to this alternate implementation for non-pure:
+            if not self.py_limited_api:
+                assert tag == supported_tags[0], "%s != %s" % (tag, supported_tags[0])
+            assert tag in supported_tags, "would build wheel with unsupported tag {}".format(tag)
+        return tag
+
+    def get_archive_basename(self):
+        """Return archive name without extension"""
+
+        impl_tag, abi_tag, plat_tag = self.get_tag()
+
+        archive_basename = "%s-%s-%s-%s" % (
+            self.wheel_dist_name,
+            impl_tag,
+            abi_tag,
+            plat_tag)
+        return archive_basename
+
+    def run(self):
+        build_scripts = self.reinitialize_command('build_scripts')
+        build_scripts.executable = 'python'
+
+        if not self.skip_build:
+            self.run_command('build')
+
+        install = self.reinitialize_command('install',
+                                            reinit_subcommands=True)
+        install.root = self.bdist_dir
+        install.compile = False
+        install.skip_build = self.skip_build
+        install.warn_dir = False
+
+        # A wheel without setuptools scripts is more cross-platform.
+        # Use the (undocumented) `no_ep` option to setuptools'
+        # install_scripts command to avoid creating entry point scripts.
+        install_scripts = self.reinitialize_command('install_scripts')
+        install_scripts.no_ep = True
+
+        # Use a custom scheme for the archive, because we have to decide
+        # at installation time which scheme to use.
+        for key in ('headers', 'scripts', 'data', 'purelib', 'platlib'):
+            setattr(install,
+                    'install_' + key,
+                    os.path.join(self.data_dir, key))
+
+        basedir_observed = ''
+
+        if os.name == 'nt':
+            # win32 barfs if any of these are ''; could be '.'?
+            # (distutils.command.install:change_roots bug)
+            basedir_observed = os.path.normpath(os.path.join(self.data_dir, '..'))
+            self.install_libbase = self.install_lib = basedir_observed
+
+        setattr(install,
+                'install_purelib' if self.root_is_pure else 'install_platlib',
+                basedir_observed)
+
+        logger.info("installing to %s", self.bdist_dir)
+
+        self.run_command('install')
+
+        archive_basename = self.get_archive_basename()
+
+        pseudoinstall_root = os.path.join(self.dist_dir, archive_basename)
+        if not self.relative:
+            archive_root = self.bdist_dir
+        else:
+            archive_root = os.path.join(
+                self.bdist_dir,
+                self._ensure_relative(install.install_base))
+
+        self.set_undefined_options(
+            'install_egg_info', ('target', 'egginfo_dir'))
+        self.distinfo_dir = os.path.join(self.bdist_dir,
+                                         '%s.dist-info' % self.wheel_dist_name)
+        self.egg2dist(self.egginfo_dir,
+                      self.distinfo_dir)
+
+        self.write_wheelfile(self.distinfo_dir)
+
+        self.write_record(self.bdist_dir, self.distinfo_dir)
+
+        # Make the archive
+        if not os.path.exists(self.dist_dir):
+            os.makedirs(self.dist_dir)
+        wheel_name = archive_wheelfile(pseudoinstall_root, archive_root)
+
+        # Sign the archive
+        if 'WHEEL_TOOL' in os.environ:
+            subprocess.call([os.environ['WHEEL_TOOL'], 'sign', wheel_name])
+
+        # Add to 'Distribution.dist_files' so that the "upload" command works
+        getattr(self.distribution, 'dist_files', []).append(
+            ('bdist_wheel', get_python_version(), wheel_name))
+
+        if not self.keep_temp:
+            logger.info('removing %s', self.bdist_dir)
+            if not self.dry_run:
+                rmtree(self.bdist_dir)
+
+    def write_wheelfile(self, wheelfile_base, generator='bdist_wheel (' + wheel_version + ')'):
+        from email.message import Message
+        msg = Message()
+        msg['Wheel-Version'] = '1.0'  # of the spec
+        msg['Generator'] = generator
+        msg['Root-Is-Purelib'] = str(self.root_is_pure).lower()
+        if self.build_number is not None:
+            msg['Build'] = self.build_number
+
+        # Doesn't work for bdist_wininst
+        impl_tag, abi_tag, plat_tag = self.get_tag()
+        for impl in impl_tag.split('.'):
+            for abi in abi_tag.split('.'):
+                for plat in plat_tag.split('.'):
+                    msg['Tag'] = '-'.join((impl, abi, plat))
+
+        wheelfile_path = os.path.join(wheelfile_base, 'WHEEL')
+        logger.info('creating %s', wheelfile_path)
+        with open(wheelfile_path, 'w') as f:
+            Generator(f, maxheaderlen=0).flatten(msg)
+
+    def _ensure_relative(self, path):
+        # copied from dir_util, deleted
+        drive, path = os.path.splitdrive(path)
+        if path[0:1] == os.sep:
+            path = drive + path[1:]
+        return path
+
+    def license_file(self):
+        """Return license filename from a license-file key in setup.cfg, or None."""
+        metadata = self.distribution.get_option_dict('metadata')
+        if 'license_file' not in metadata:
+            return None
+        return metadata['license_file'][1]
+
+    def egg2dist(self, egginfo_path, distinfo_path):
+        """Convert an .egg-info directory into a .dist-info directory"""
+        def adios(p):
+            """Appropriately delete directory, file or link."""
+            if os.path.exists(p) and not os.path.islink(p) and os.path.isdir(p):
+                shutil.rmtree(p)
+            elif os.path.exists(p):
+                os.unlink(p)
+
+        adios(distinfo_path)
+
+        if not os.path.exists(egginfo_path):
+            # There is no egg-info. This is probably because the egg-info
+            # file/directory is not named matching the distribution name used
+            # to name the archive file. Check for this case and report
+            # accordingly.
+            import glob
+            pat = os.path.join(os.path.dirname(egginfo_path), '*.egg-info')
+            possible = glob.glob(pat)
+            err = "Egg metadata expected at %s but not found" % (egginfo_path,)
+            if possible:
+                alt = os.path.basename(possible[0])
+                err += " (%s found - possible misnamed archive file?)" % (alt,)
+
+            raise ValueError(err)
+
+        if os.path.isfile(egginfo_path):
+            # .egg-info is a single file
+            pkginfo_path = egginfo_path
+            pkg_info = pkginfo_to_metadata(egginfo_path, egginfo_path)
+            os.mkdir(distinfo_path)
+        else:
+            # .egg-info is a directory
+            pkginfo_path = os.path.join(egginfo_path, 'PKG-INFO')
+            pkg_info = pkginfo_to_metadata(egginfo_path, pkginfo_path)
+
+            # ignore common egg metadata that is useless to wheel
+            shutil.copytree(egginfo_path, distinfo_path,
+                            ignore=lambda x, y: {'PKG-INFO', 'requires.txt', 'SOURCES.txt',
+                                                 'not-zip-safe'}
+                            )
+
+            # delete dependency_links if it is only whitespace
+            dependency_links_path = os.path.join(distinfo_path, 'dependency_links.txt')
+            with open(dependency_links_path, 'r') as dependency_links_file:
+                dependency_links = dependency_links_file.read().strip()
+            if not dependency_links:
+                adios(dependency_links_path)
+
+        write_pkg_info(os.path.join(distinfo_path, 'METADATA'), pkg_info)
+
+        # XXX heuristically copy any LICENSE/LICENSE.txt?
+        license = self.license_file()
+        if license:
+            license_filename = 'LICENSE.txt'
+            shutil.copy(license, os.path.join(distinfo_path, license_filename))
+
+        adios(egginfo_path)
+
+    def write_record(self, bdist_dir, distinfo_dir):
+        from .util import urlsafe_b64encode
+
+        record_path = os.path.join(distinfo_dir, 'RECORD')
+        record_relpath = os.path.relpath(record_path, bdist_dir)
+
+        def walk():
+            for dir, dirs, files in os.walk(bdist_dir):
+                dirs.sort()
+                for f in sorted(files):
+                    yield os.path.join(dir, f)
+
+        def skip(path):
+            """Wheel hashes every possible file."""
+            return (path == record_relpath)
+
+        with open_for_csv(record_path, 'w+') as record_file:
+            writer = csv.writer(record_file)
+            for path in walk():
+                relpath = os.path.relpath(path, bdist_dir)
+                if skip(relpath):
+                    hash = ''
+                    size = ''
+                else:
+                    with open(path, 'rb') as f:
+                        data = f.read()
+                    digest = hashlib.sha256(data).digest()
+                    hash = 'sha256=' + native(urlsafe_b64encode(digest))
+                    size = len(data)
+
+                record_path = os.path.relpath(path, bdist_dir).replace(os.path.sep, '/')
+
+                # On Python 2, re-encode the path as UTF-8 from the default file system encoding
+                if isinstance(record_path, bytes):
+                    record_path = record_path.decode(sys.getfilesystemencoding()).encode('utf-8')
+
+                writer.writerow((record_path, hash, size))

env/lib/python3.6/site-packages/wheel/egg2wheel.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+import distutils.dist
+import os.path
+import re
+import shutil
+import sys
+import tempfile
+import zipfile
+from argparse import ArgumentParser
+from distutils.archive_util import make_archive
+from glob import iglob
+
+import wheel.bdist_wheel
+from wheel.tool import WheelError
+from wheel.wininst2wheel import _bdist_wheel_tag
+
+egg_info_re = re.compile(r'''
+    (?P<name>.+?)-(?P<ver>.+?)
+    (-(?P<pyver>py\d\.\d)
+     (-(?P<arch>.+?))?
+    )?.egg$''', re.VERBOSE)
+
+
+def egg2wheel(egg_path, dest_dir):
+    filename = os.path.basename(egg_path)
+    match = egg_info_re.match(filename)
+    if not match:
+        raise WheelError('Invalid egg file name: {}'.format(filename))
+
+    egg_info = match.groupdict()
+    dir = tempfile.mkdtemp(suffix="_e2w")
+    if os.path.isfile(egg_path):
+        # assume we have a bdist_egg otherwise
+        egg = zipfile.ZipFile(egg_path)
+        egg.extractall(dir)
+    else:
+        # support buildout-style installed eggs directories
+        for pth in os.listdir(egg_path):
+            src = os.path.join(egg_path, pth)
+            if os.path.isfile(src):
+                shutil.copy2(src, dir)
+            else:
+                shutil.copytree(src, os.path.join(dir, pth))
+
+    pyver = egg_info['pyver']
+    if pyver:
+        pyver = pyver.replace('.', '')
+
+    arch = (egg_info['arch'] or 'any').replace('.', '_').replace('-', '_')
+
+    # assume all binary eggs are for CPython
+    abi = 'cp' + pyver[2:] if arch != 'any' else 'none'
+
+    root_is_purelib = egg_info['arch'] is None
+    if root_is_purelib:
+        bw = wheel.bdist_wheel.bdist_wheel(distutils.dist.Distribution())
+    else:
+        bw = _bdist_wheel_tag(distutils.dist.Distribution())
+
+    bw.root_is_pure = root_is_purelib
+    bw.python_tag = pyver
+    bw.plat_name_supplied = True
+    bw.plat_name = egg_info['arch'] or 'any'
+    if not root_is_purelib:
+        bw.full_tag_supplied = True
+        bw.full_tag = (pyver, abi, arch)
+
+    dist_info_dir = os.path.join(dir, '{name}-{ver}.dist-info'.format(**egg_info))
+    bw.egg2dist(os.path.join(dir, 'EGG-INFO'), dist_info_dir)
+    bw.write_wheelfile(dist_info_dir, generator='egg2wheel')
+    bw.write_record(dir, dist_info_dir)
+    wheel_name = '{name}-{ver}-{pyver}-{}-{}'.format(abi, arch, **egg_info)
+    filename = make_archive(os.path.join(dest_dir, wheel_name), 'zip', root_dir=dir)
+    os.rename(filename, filename[:-3] + 'whl')
+    shutil.rmtree(dir)
+
+
+def main():
+    parser = ArgumentParser()
+    parser.add_argument('eggs', nargs='*', help="Eggs to convert")
+    parser.add_argument('--dest-dir', '-d', default=os.path.curdir,
+                        help="Directory to store wheels (default %(default)s)")
+    parser.add_argument('--verbose', '-v', action='store_true')
+    args = parser.parse_args()
+    for pat in args.eggs:
+        for egg in iglob(pat):
+            if args.verbose:
+                print("{}... ".format(egg))
+                sys.stdout.flush()
+
+            egg2wheel(egg, args.dest_dir)
+            if args.verbose:
+                print("OK")
+
+
+if __name__ == "__main__":
+    main()

env/lib/python3.6/site-packages/wheel/install.py

@@ -0,0 +1,512 @@
+"""
+Operations on existing wheel files, including basic installation.
+"""
+# XXX see patched pip to install
+
+from __future__ import print_function
+
+import csv
+import hashlib
+import os.path
+import re
+import shutil
+import sys
+import warnings
+import zipfile
+
+from . import signatures
+from .paths import get_install_paths
+from .pep425tags import get_supported
+from .pkginfo import read_pkg_info_bytes
+from .util import (
+    urlsafe_b64encode, from_json, urlsafe_b64decode, native, binary, HashingFile, open_for_csv)
+
+try:
+    _big_number = sys.maxsize
+except NameError:
+    _big_number = sys.maxint
+
+# The next major version after this version of the 'wheel' tool:
+VERSION_TOO_HIGH = (1, 0)
+
+# Non-greedy matching of an optional build number may be too clever (more
+# invalid wheel filenames will match). Separate regex for .dist-info?
+WHEEL_INFO_RE = re.compile(
+    r"""^(?P<namever>(?P<name>.+?)-(?P<ver>\d.*?))(-(?P<build>\d.*?))?
+     -(?P<pyver>[a-z].+?)-(?P<abi>.+?)-(?P<plat>.+?)(\.whl|\.dist-info)$""",
+    re.VERBOSE).match
+
+
+def parse_version(version):
+    """Use parse_version from pkg_resources or distutils as available."""
+    global parse_version
+    try:
+        from pkg_resources import parse_version
+    except ImportError:
+        from distutils.version import LooseVersion as parse_version
+    return parse_version(version)
+
+
+class reify(object):
+    """Put the result of a method which uses this (non-data)
+    descriptor decorator in the instance dict after the first call,
+    effectively replacing the decorator with an instance variable.
+    """
+
+    def __init__(self, wrapped):
+        self.wrapped = wrapped
+        self.__doc__ = wrapped.__doc__
+
+    def __get__(self, inst, objtype=None):
+        if inst is None:
+            return self
+        val = self.wrapped(inst)
+        setattr(inst, self.wrapped.__name__, val)
+        return val
+
+
+class BadWheelFile(ValueError):
+    pass
+
+
+class WheelFile(object):
+    """Parse wheel-specific attributes from a wheel (.whl) file and offer
+    basic installation and verification support.
+
+    WheelFile can be used to simply parse a wheel filename by avoiding the
+    methods that require the actual file contents."""
+
+    WHEEL_INFO = "WHEEL"
+    RECORD = "RECORD"
+
+    def __init__(self,
+                 filename,
+                 fp=None,
+                 append=False,
+                 context=get_supported):
+        """
+        :param fp: A seekable file-like object or None to open(filename).
+        :param append: Open archive in append mode.
+        :param context: Function returning list of supported tags. Wheels
+        must have the same context to be sortable.
+        """
+        self.filename = filename
+        self.fp = fp
+        self.append = append
+        self.context = context
+        basename = os.path.basename(filename)
+        self.parsed_filename = WHEEL_INFO_RE(basename)
+        if not basename.endswith('.whl') or self.parsed_filename is None:
+            raise BadWheelFile("Bad filename '%s'" % filename)
+
+    def __repr__(self):
+        return self.filename
+
+    @property
+    def distinfo_name(self):
+        return "%s.dist-info" % self.parsed_filename.group('namever')
+
+    @property
+    def datadir_name(self):
+        return "%s.data" % self.parsed_filename.group('namever')
+
+    @property
+    def record_name(self):
+        return "%s/%s" % (self.distinfo_name, self.RECORD)
+
+    @property
+    def wheelinfo_name(self):
+        return "%s/%s" % (self.distinfo_name, self.WHEEL_INFO)
+
+    @property
+    def tags(self):
+        """A wheel file is compatible with the Cartesian product of the
+        period-delimited tags in its filename.
+        To choose a wheel file among several candidates having the same
+        distribution version 'ver', an installer ranks each triple of
+        (pyver, abi, plat) that its Python installation can run, sorting
+        the wheels by the best-ranked tag it supports and then by their
+        arity which is just len(list(compatibility_tags)).
+        """
+        tags = self.parsed_filename.groupdict()
+        for pyver in tags['pyver'].split('.'):
+            for abi in tags['abi'].split('.'):
+                for plat in tags['plat'].split('.'):
+                    yield (pyver, abi, plat)
+
+    compatibility_tags = tags
+
+    @property
+    def arity(self):
+        """The number of compatibility tags the wheel declares."""
+        return len(list(self.compatibility_tags))
+
+    @property
+    def rank(self):
+        """
+        Lowest index of any of this wheel's tags in self.context(), and the
+        arity e.g. (0, 1)
+        """
+        return self.compatibility_rank(self.context())
+
+    @property
+    def compatible(self):
+        return self.rank[0] != _big_number  # bad API!
+
+    # deprecated:
+    def compatibility_rank(self, supported):
+        """Rank the wheel against the supported tags. Smaller ranks are more
+        compatible!
+
+        :param supported: A list of compatibility tags that the current
+            Python implemenation can run.
+        """
+        preferences = []
+        for tag in self.compatibility_tags:
+            try:
+                preferences.append(supported.index(tag))
+            # Tag not present
+            except ValueError:
+                pass
+        if len(preferences):
+            return (min(preferences), self.arity)
+        return (_big_number, 0)
+
+    # deprecated
+    def supports_current_python(self, x):
+        assert self.context == x, 'context mismatch'
+        return self.compatible
+
+    # Comparability.
+    # Wheels are equal if they refer to the same file.
+    # If two wheels are not equal, compare based on (in this order):
+    #   1. Name
+    #   2. Version
+    #   3. Compatibility rank
+    #   4. Filename (as a tiebreaker)
+    @property
+    def _sort_key(self):
+        return (self.parsed_filename.group('name'),
+                parse_version(self.parsed_filename.group('ver')),
+                tuple(-x for x in self.rank),
+                self.filename)
+
+    def __eq__(self, other):
+        return self.filename == other.filename
+
+    def __ne__(self, other):
+        return self.filename != other.filename
+
+    def __lt__(self, other):
+        if self.context != other.context:
+            raise TypeError("{0}.context != {1}.context".format(self, other))
+
+        return self._sort_key < other._sort_key
+
+        # XXX prune
+
+        sn = self.parsed_filename.group('name')
+        on = other.parsed_filename.group('name')
+        if sn != on:
+            return sn < on
+        sv = parse_version(self.parsed_filename.group('ver'))
+        ov = parse_version(other.parsed_filename.group('ver'))
+        if sv != ov:
+            return sv < ov
+        # Compatibility
+        if self.context != other.context:
+            raise TypeError("{0}.context != {1}.context".format(self, other))
+        sc = self.rank
+        oc = other.rank
+        if sc is not None and oc is not None and sc != oc:
+            # Smaller compatibility ranks are "better" than larger ones,
+            # so we have to reverse the sense of the comparison here!
+            return sc > oc
+        elif sc is None and oc is not None:
+            return False
+        return self.filename < other.filename
+
+    def __gt__(self, other):
+        return other < self
+
+    def __le__(self, other):
+        return self == other or self < other
+
+    def __ge__(self, other):
+        return self == other or other < self
+
+    #
+    # Methods using the file's contents:
+    #
+
+    @reify
+    def zipfile(self):
+        mode = "r"
+        if self.append:
+            mode = "a"
+        vzf = VerifyingZipFile(self.fp if self.fp else self.filename, mode)
+        if not self.append:
+            self.verify(vzf)
+        return vzf
+
+    @reify
+    def parsed_wheel_info(self):
+        """Parse wheel metadata (the .data/WHEEL file)"""
+        return read_pkg_info_bytes(self.zipfile.read(self.wheelinfo_name))
+
+    def check_version(self):
+        version = self.parsed_wheel_info['Wheel-Version']
+        if tuple(map(int, version.split('.'))) >= VERSION_TOO_HIGH:
+            raise ValueError("Wheel version is too high")
+
+    @reify
+    def install_paths(self):
+        """
+        Consult distutils to get the install paths for our dist.  A dict with
+        ('purelib', 'platlib', 'headers', 'scripts', 'data').
+
+        We use the name from our filename as the dist name, which means headers
+        could be installed in the wrong place if the filesystem-escaped name
+        is different than the Name.  Who cares?
+        """
+        name = self.parsed_filename.group('name')
+        return get_install_paths(name)
+
+    def install(self, force=False, overrides={}):
+        """
+        Install the wheel into site-packages.
+        """
+
+        # Utility to get the target directory for a particular key
+        def get_path(key):
+            return overrides.get(key) or self.install_paths[key]
+
+        # The base target location is either purelib or platlib
+        if self.parsed_wheel_info['Root-Is-Purelib'] == 'true':
+            root = get_path('purelib')
+        else:
+            root = get_path('platlib')
+
+        # Parse all the names in the archive
+        name_trans = {}
+        for info in self.zipfile.infolist():
+            name = info.filename
+            # Zip files can contain entries representing directories.
+            # These end in a '/'.
+            # We ignore these, as we create directories on demand.
+            if name.endswith('/'):
+                continue
+
+            # Pathnames in a zipfile namelist are always /-separated.
+            # In theory, paths could start with ./ or have other oddities
+            # but this won't happen in practical cases of well-formed wheels.
+            # We'll cover the simple case of an initial './' as it's both easy
+            # to do and more common than most other oddities.
+            if name.startswith('./'):
+                name = name[2:]
+
+            # Split off the base directory to identify files that are to be
+            # installed in non-root locations
+            basedir, sep, filename = name.partition('/')
+            if sep and basedir == self.datadir_name:
+                # Data file. Target destination is elsewhere
+                key, sep, filename = filename.partition('/')
+                if not sep:
+                    raise ValueError("Invalid filename in wheel: {0}".format(name))
+                target = get_path(key)
+            else:
+                # Normal file. Target destination is root
+                key = ''
+                target = root
+                filename = name
+
+            # Map the actual filename from the zipfile to its intended target
+            # directory and the pathname relative to that directory.
+            dest = os.path.normpath(os.path.join(target, filename))
+            name_trans[info] = (key, target, filename, dest)
+
+        # We're now ready to start processing the actual install. The process
+        # is as follows:
+        #   1. Prechecks - is the wheel valid, is its declared architecture
+        #      OK, etc. [[Responsibility of the caller]]
+        #   2. Overwrite check - do any of the files to be installed already
+        #      exist?
+        #   3. Actual install - put the files in their target locations.
+        #   4. Update RECORD - write a suitably modified RECORD file to
+        #      reflect the actual installed paths.
+
+        if not force:
+            for info, v in name_trans.items():
+                k = info.filename
+                key, target, filename, dest = v
+                if os.path.exists(dest):
+                    raise ValueError(
+                        "Wheel file {0} would overwrite {1}. Use force if this is intended".format(
+                            k, dest))
+
+        # Get the name of our executable, for use when replacing script
+        # wrapper hashbang lines.
+        # We encode it using getfilesystemencoding, as that is "the name of
+        # the encoding used to convert Unicode filenames into system file
+        # names".
+        exename = sys.executable.encode(sys.getfilesystemencoding())
+        record_data = []
+        record_name = self.distinfo_name + '/RECORD'
+        for info, (key, target, filename, dest) in name_trans.items():
+            name = info.filename
+            source = self.zipfile.open(info)
+            # Skip the RECORD file
+            if name == record_name:
+                continue
+            ddir = os.path.dirname(dest)
+            if not os.path.isdir(ddir):
+                os.makedirs(ddir)
+
+            temp_filename = dest + '.part'
+            try:
+                with HashingFile(temp_filename, 'wb') as destination:
+                    if key == 'scripts':
+                        hashbang = source.readline()
+                        if hashbang.startswith(b'#!python'):
+                            hashbang = b'#!' + exename + binary(os.linesep)
+                        destination.write(hashbang)
+
+                    shutil.copyfileobj(source, destination)
+            except BaseException:
+                if os.path.exists(temp_filename):
+                    os.unlink(temp_filename)
+
+                raise
+
+            os.rename(temp_filename, dest)
+            reldest = os.path.relpath(dest, root)
+            reldest.replace(os.sep, '/')
+            record_data.append((reldest, destination.digest(), destination.length))
+            destination.close()
+            source.close()
+            # preserve attributes (especially +x bit for scripts)
+            attrs = info.external_attr >> 16
+            if attrs:  # tends to be 0 if Windows.
+                os.chmod(dest, info.external_attr >> 16)
+
+        record_name = os.path.join(root, self.record_name)
+        with open_for_csv(record_name, 'w+') as record_file:
+            writer = csv.writer(record_file)
+            for reldest, digest, length in sorted(record_data):
+                writer.writerow((reldest, digest, length))
+            writer.writerow((self.record_name, '', ''))
+
+    def verify(self, zipfile=None):
+        """Configure the VerifyingZipFile `zipfile` by verifying its signature
+        and setting expected hashes for every hash in RECORD.
+        Caller must complete the verification process by completely reading
+        every file in the archive (e.g. with extractall)."""
+        sig = None
+        if zipfile is None:
+            zipfile = self.zipfile
+        zipfile.strict = True
+
+        record_name = '/'.join((self.distinfo_name, 'RECORD'))
+        sig_name = '/'.join((self.distinfo_name, 'RECORD.jws'))
+        # tolerate s/mime signatures:
+        smime_sig_name = '/'.join((self.distinfo_name, 'RECORD.p7s'))
+        zipfile.set_expected_hash(record_name, None)
+        zipfile.set_expected_hash(sig_name, None)
+        zipfile.set_expected_hash(smime_sig_name, None)
+        record = zipfile.read(record_name)
+
+        record_digest = urlsafe_b64encode(hashlib.sha256(record).digest())
+        try:
+            sig = from_json(native(zipfile.read(sig_name)))
+        except KeyError:  # no signature
+            pass
+        if sig:
+            headers, payload = signatures.verify(sig)
+            if payload['hash'] != "sha256=" + native(record_digest):
+                msg = "RECORD.jws claimed RECORD hash {} != computed hash {}."
+                raise BadWheelFile(msg.format(payload['hash'],
+                                              native(record_digest)))
+
+        reader = csv.reader((native(r, 'utf-8') for r in record.splitlines()))
+
+        for row in reader:
+            filename = row[0]
+            hash = row[1]
+            if not hash:
+                if filename not in (record_name, sig_name):
+                    print("%s has no hash!" % filename, file=sys.stderr)
+                continue
+
+            algo, data = row[1].split('=', 1)
+            assert algo == "sha256", "Unsupported hash algorithm"
+            zipfile.set_expected_hash(filename, urlsafe_b64decode(binary(data)))
+
+
+class VerifyingZipFile(zipfile.ZipFile):
+    """ZipFile that can assert that each of its extracted contents matches
+    an expected sha256 hash. Note that each file must be completely read in
+    order for its hash to be checked."""
+
+    def __init__(self, file, mode="r",
+                 compression=zipfile.ZIP_STORED,
+                 allowZip64=True):
+        super(VerifyingZipFile, self).__init__(file, mode, compression, allowZip64)
+
+        self.strict = False
+        self._expected_hashes = {}
+        self._hash_algorithm = hashlib.sha256
+
+    def set_expected_hash(self, name, hash):
+        """
+        :param name: name of zip entry
+        :param hash: bytes of hash (or None for "don't care")
+        """
+        self._expected_hashes[name] = hash
+
+    def open(self, name_or_info, mode="r", pwd=None):
+        """Return file-like object for 'name'."""
+        # A non-monkey-patched version would contain most of zipfile.py
+        ef = super(VerifyingZipFile, self).open(name_or_info, mode, pwd)
+        if isinstance(name_or_info, zipfile.ZipInfo):
+            name = name_or_info.filename
+        else:
+            name = name_or_info
+
+        if name in self._expected_hashes and self._expected_hashes[name] is not None:
+            expected_hash = self._expected_hashes[name]
+            try:
+                _update_crc_orig = ef._update_crc
+            except AttributeError:
+                warnings.warn('Need ZipExtFile._update_crc to implement '
+                              'file hash verification (in Python >= 2.7)')
+                return ef
+            running_hash = self._hash_algorithm()
+            if hasattr(ef, '_eof'):  # py33
+                def _update_crc(data):
+                    _update_crc_orig(data)
+                    running_hash.update(data)
+                    if ef._eof and running_hash.digest() != expected_hash:
+                        raise BadWheelFile("Bad hash for file %r" % ef.name)
+            else:
+                def _update_crc(data, eof=None):
+                    _update_crc_orig(data, eof=eof)
+                    running_hash.update(data)
+                    if eof and running_hash.digest() != expected_hash:
+                        raise BadWheelFile("Bad hash for file %r" % ef.name)
+            ef._update_crc = _update_crc
+        elif self.strict and name not in self._expected_hashes:
+            raise BadWheelFile("No expected hash for file %r" % ef.name)
+        return ef
+
+    def pop(self):
+        """Truncate the last file off this zipfile.
+        Assumes infolist() is in the same order as the files (true for
+        ordinary zip files created by Python)"""
+        if not self.fp:
+            raise RuntimeError(
+                  "Attempt to pop from ZIP archive that was already closed")
+        last = self.infolist().pop()
+        del self.NameToInfo[last.filename]
+        self.fp.seek(last.header_offset, os.SEEK_SET)
+        self.fp.truncate()
+        self._didModify = True

env/lib/python3.6/site-packages/wheel/metadata.py

@@ -0,0 +1,130 @@
+"""
+Tools for converting old- to new-style metadata.
+"""
+
+import os.path
+import re
+import textwrap
+from collections import namedtuple
+
+import pkg_resources
+
+from .pkginfo import read_pkg_info
+
+# Wheel itself is probably the only program that uses non-extras markers
+# in METADATA/PKG-INFO. Support its syntax with the extra at the end only.
+EXTRA_RE = re.compile("""^(?P<package>.*?)(;\s*(?P<condition>.*?)(extra == '(?P<extra>.*?)')?)$""")
+
+MayRequiresKey = namedtuple('MayRequiresKey', ('condition', 'extra'))
+
+
+def requires_to_requires_dist(requirement):
+    """Compose the version predicates for requirement in PEP 345 fashion."""
+    requires_dist = []
+    for op, ver in requirement.specs:
+        requires_dist.append(op + ver)
+    if not requires_dist:
+        return ''
+    return " (%s)" % ','.join(sorted(requires_dist))
+
+
+def convert_requirements(requirements):
+    """Yield Requires-Dist: strings for parsed requirements strings."""
+    for req in requirements:
+        parsed_requirement = pkg_resources.Requirement.parse(req)
+        spec = requires_to_requires_dist(parsed_requirement)
+        extras = ",".join(parsed_requirement.extras)
+        if extras:
+            extras = "[%s]" % extras
+        yield (parsed_requirement.project_name + extras + spec)
+
+
+def generate_requirements(extras_require):
+    """
+    Convert requirements from a setup()-style dictionary to ('Requires-Dist', 'requirement')
+    and ('Provides-Extra', 'extra') tuples.
+
+    extras_require is a dictionary of {extra: [requirements]} as passed to setup(),
+    using the empty extra {'': [requirements]} to hold install_requires.
+    """
+    for extra, depends in extras_require.items():
+        condition = ''
+        if extra and ':' in extra:  # setuptools extra:condition syntax
+            extra, condition = extra.split(':', 1)
+            extra = pkg_resources.safe_extra(extra)
+        if extra:
+            yield ('Provides-Extra', extra)
+            if condition:
+                condition = "(" + condition + ") and "
+            condition += "extra == '%s'" % extra
+        if condition:
+            condition = '; ' + condition
+        for new_req in convert_requirements(depends):
+            yield ('Requires-Dist', new_req + condition)
+
+
+def pkginfo_to_metadata(egg_info_path, pkginfo_path):
+    """
+    Convert .egg-info directory with PKG-INFO to the Metadata 2.1 format
+    """
+    pkg_info = read_pkg_info(pkginfo_path)
+    pkg_info.replace_header('Metadata-Version', '2.1')
+    requires_path = os.path.join(egg_info_path, 'requires.txt')
+    if os.path.exists(requires_path):
+        with open(requires_path) as requires_file:
+            requires = requires_file.read()
+        for extra, reqs in sorted(pkg_resources.split_sections(requires),
+                                  key=lambda x: x[0] or ''):
+            for item in generate_requirements({extra: reqs}):
+                pkg_info[item[0]] = item[1]
+
+    description = pkg_info['Description']
+    if description:
+        pkg_info.set_payload(dedent_description(pkg_info))
+        del pkg_info['Description']
+
+    return pkg_info
+
+
+def pkginfo_unicode(pkg_info, field):
+    """Hack to coax Unicode out of an email Message() - Python 3.3+"""
+    text = pkg_info[field]
+    field = field.lower()
+    if not isinstance(text, str):
+        if not hasattr(pkg_info, 'raw_items'):  # Python 3.2
+            return str(text)
+        for item in pkg_info.raw_items():
+            if item[0].lower() == field:
+                text = item[1].encode('ascii', 'surrogateescape') \
+                    .decode('utf-8')
+                break
+
+    return text
+
+
+def dedent_description(pkg_info):
+    """
+    Dedent and convert pkg_info['Description'] to Unicode.
+    """
+    description = pkg_info['Description']
+
+    # Python 3 Unicode handling, sorta.
+    surrogates = False
+    if not isinstance(description, str):
+        surrogates = True
+        description = pkginfo_unicode(pkg_info, 'Description')
+
+    description_lines = description.splitlines()
+    description_dedent = '\n'.join(
+        # if the first line of long_description is blank,
+        # the first line here will be indented.
+        (description_lines[0].lstrip(),
+         textwrap.dedent('\n'.join(description_lines[1:])),
+         '\n'))
+
+    if surrogates:
+        description_dedent = description_dedent \
+            .encode("utf8") \
+            .decode("ascii", "surrogateescape")
+
+    return description_dedent

env/lib/python3.6/site-packages/wheel/paths.py

@@ -0,0 +1,43 @@
+"""
+Installation paths.
+
+Map the .data/ subdirectory names to install paths.
+"""
+
+import distutils.command.install as install
+import distutils.dist as dist
+import os.path
+import sys
+
+
+def get_install_command(name):
+    # late binding due to potential monkeypatching
+    d = dist.Distribution({'name': name})
+    i = install.install(d)
+    i.finalize_options()
+    return i
+
+
+def get_install_paths(name):
+    """
+    Return the (distutils) install paths for the named dist.
+
+    A dict with ('purelib', 'platlib', 'headers', 'scripts', 'data') keys.
+    """
+    paths = {}
+
+    i = get_install_command(name)
+
+    for key in install.SCHEME_KEYS:
+        paths[key] = getattr(i, 'install_' + key)
+
+    # pip uses a similar path as an alternative to the system's (read-only)
+    # include directory:
+    if hasattr(sys, 'real_prefix'):  # virtualenv
+        paths['headers'] = os.path.join(sys.prefix,
+                                        'include',
+                                        'site',
+                                        'python' + sys.version[:3],
+                                        name)
+
+    return paths

env/lib/python3.6/site-packages/wheel/pep425tags.py

@@ -0,0 +1,180 @@
+"""Generate and work with PEP 425 Compatibility Tags."""
+
+import distutils.util
+import platform
+import sys
+import sysconfig
+import warnings
+
+
+def get_config_var(var):
+    try:
+        return sysconfig.get_config_var(var)
+    except IOError as e:  # pip Issue #1074
+        warnings.warn("{0}".format(e), RuntimeWarning)
+        return None
+
+
+def get_abbr_impl():
+    """Return abbreviated implementation name."""
+    impl = platform.python_implementation()
+    if impl == 'PyPy':
+        return 'pp'
+    elif impl == 'Jython':
+        return 'jy'
+    elif impl == 'IronPython':
+        return 'ip'
+    elif impl == 'CPython':
+        return 'cp'
+
+    raise LookupError('Unknown Python implementation: ' + impl)
+
+
+def get_impl_ver():
+    """Return implementation version."""
+    impl_ver = get_config_var("py_version_nodot")
+    if not impl_ver or get_abbr_impl() == 'pp':
+        impl_ver = ''.join(map(str, get_impl_version_info()))
+    return impl_ver
+
+
+def get_impl_version_info():
+    """Return sys.version_info-like tuple for use in decrementing the minor
+    version."""
+    if get_abbr_impl() == 'pp':
+        # as per https://github.com/pypa/pip/issues/2882
+        return (sys.version_info[0], sys.pypy_version_info.major,
+                sys.pypy_version_info.minor)
+    else:
+        return sys.version_info[0], sys.version_info[1]
+
+
+def get_flag(var, fallback, expected=True, warn=True):
+    """Use a fallback method for determining SOABI flags if the needed config
+    var is unset or unavailable."""
+    val = get_config_var(var)
+    if val is None:
+        if warn:
+            warnings.warn("Config variable '{0}' is unset, Python ABI tag may "
+                          "be incorrect".format(var), RuntimeWarning, 2)
+        return fallback()
+    return val == expected
+
+
+def get_abi_tag():
+    """Return the ABI tag based on SOABI (if available) or emulate SOABI
+    (CPython 2, PyPy)."""
+    soabi = get_config_var('SOABI')
+    impl = get_abbr_impl()
+    if not soabi and impl in ('cp', 'pp') and hasattr(sys, 'maxunicode'):
+        d = ''
+        m = ''
+        u = ''
+        if get_flag('Py_DEBUG',
+                    lambda: hasattr(sys, 'gettotalrefcount'),
+                    warn=(impl == 'cp')):
+            d = 'd'
+        if get_flag('WITH_PYMALLOC',
+                    lambda: impl == 'cp',
+                    warn=(impl == 'cp')):
+            m = 'm'
+        if get_flag('Py_UNICODE_SIZE',
+                    lambda: sys.maxunicode == 0x10ffff,
+                    expected=4,
+                    warn=(impl == 'cp' and
+                          sys.version_info < (3, 3))) \
+                and sys.version_info < (3, 3):
+            u = 'u'
+        abi = '%s%s%s%s%s' % (impl, get_impl_ver(), d, m, u)
+    elif soabi and soabi.startswith('cpython-'):
+        abi = 'cp' + soabi.split('-')[1]
+    elif soabi:
+        abi = soabi.replace('.', '_').replace('-', '_')
+    else:
+        abi = None
+    return abi
+
+
+def get_platform():
+    """Return our platform name 'win32', 'linux_x86_64'"""
+    # XXX remove distutils dependency
+    result = distutils.util.get_platform().replace('.', '_').replace('-', '_')
+    if result == "linux_x86_64" and sys.maxsize == 2147483647:
+        # pip pull request #3497
+        result = "linux_i686"
+    return result
+
+
+def get_supported(versions=None, supplied_platform=None):
+    """Return a list of supported tags for each version specified in
+    `versions`.
+
+    :param versions: a list of string versions, of the form ["33", "32"],
+        or None. The first version will be assumed to support our ABI.
+    """
+    supported = []
+
+    # Versions must be given with respect to the preference
+    if versions is None:
+        versions = []
+        version_info = get_impl_version_info()
+        major = version_info[:-1]
+        # Support all previous minor Python versions.
+        for minor in range(version_info[-1], -1, -1):
+            versions.append(''.join(map(str, major + (minor,))))
+
+    impl = get_abbr_impl()
+
+    abis = []
+
+    abi = get_abi_tag()
+    if abi:
+        abis[0:0] = [abi]
+
+    abi3s = set()
+    import imp
+    for suffix in imp.get_suffixes():
+        if suffix[0].startswith('.abi'):
+            abi3s.add(suffix[0].split('.', 2)[1])
+
+    abis.extend(sorted(list(abi3s)))
+
+    abis.append('none')
+
+    platforms = []
+    if supplied_platform:
+        platforms.append(supplied_platform)
+    platforms.append(get_platform())
+
+    # Current version, current API (built specifically for our Python):
+    for abi in abis:
+        for arch in platforms:
+            supported.append(('%s%s' % (impl, versions[0]), abi, arch))
+
+    # abi3 modules compatible with older version of Python
+    for version in versions[1:]:
+        # abi3 was introduced in Python 3.2
+        if version in ('31', '30'):
+            break
+        for abi in abi3s:   # empty set if not Python 3
+            for arch in platforms:
+                supported.append(("%s%s" % (impl, version), abi, arch))
+
+    # No abi / arch, but requires our implementation:
+    for i, version in enumerate(versions):
+        supported.append(('%s%s' % (impl, version), 'none', 'any'))
+        if i == 0:
+            # Tagged specifically as being cross-version compatible
+            # (with just the major version specified)
+            supported.append(('%s%s' % (impl, versions[0][0]), 'none', 'any'))
+
+    # Major Python version + platform; e.g. binaries not using the Python API
+    supported.append(('py%s' % (versions[0][0]), 'none', arch))
+
+    # No abi / arch, generic Python
+    for i, version in enumerate(versions):
+        supported.append(('py%s' % (version,), 'none', 'any'))
+        if i == 0:
+            supported.append(('py%s' % (version[0]), 'none', 'any'))
+
+    return supported

env/lib/python3.6/site-packages/wheel/pkginfo.py

@@ -0,0 +1,43 @@
+"""Tools for reading and writing PKG-INFO / METADATA without caring
+about the encoding."""
+
+from email.parser import Parser
+
+try:
+    unicode
+    _PY3 = False
+except NameError:
+    _PY3 = True
+
+if not _PY3:
+    from email.generator import Generator
+
+    def read_pkg_info_bytes(bytestr):
+        return Parser().parsestr(bytestr)
+
+    def read_pkg_info(path):
+        with open(path, "r") as headers:
+            message = Parser().parse(headers)
+        return message
+
+    def write_pkg_info(path, message):
+        with open(path, 'w') as metadata:
+            Generator(metadata, mangle_from_=False, maxheaderlen=0).flatten(message)
+else:
+    from email.generator import BytesGenerator
+
+    def read_pkg_info_bytes(bytestr):
+        headers = bytestr.decode(encoding="ascii", errors="surrogateescape")
+        message = Parser().parsestr(headers)
+        return message
+
+    def read_pkg_info(path):
+        with open(path, "r",
+                  encoding="ascii",
+                  errors="surrogateescape") as headers:
+            message = Parser().parse(headers)
+        return message
+
+    def write_pkg_info(path, message):
+        with open(path, "wb") as out:
+            BytesGenerator(out, mangle_from_=False, maxheaderlen=0).flatten(message)

env/lib/python3.6/site-packages/wheel/signatures/djbec.py

@@ -0,0 +1,323 @@
+# Ed25519 digital signatures
+# Based on https://ed25519.cr.yp.to/python/ed25519.py
+# See also https://ed25519.cr.yp.to/software.html
+# Adapted by Ron Garret
+# Sped up considerably using coordinate transforms found on:
+# https://www.hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
+# Specifically add-2008-hwcd-4 and dbl-2008-hwcd
+
+import hashlib
+import random
+
+try:  # pragma nocover
+    unicode
+    PY3 = False
+
+    def asbytes(b):
+        """Convert array of integers to byte string"""
+        return ''.join(chr(x) for x in b)
+
+    def joinbytes(b):
+        """Convert array of bytes to byte string"""
+        return ''.join(b)
+
+    def bit(h, i):
+        """Return i'th bit of bytestring h"""
+        return (ord(h[i // 8]) >> (i % 8)) & 1
+except NameError:  # pragma nocover
+    PY3 = True
+    asbytes = bytes
+    joinbytes = bytes
+
+    def bit(h, i):
+        return (h[i // 8] >> (i % 8)) & 1
+
+b = 256
+q = 2 ** 255 - 19
+l = 2 ** 252 + 27742317777372353535851937790883648493  # noqa: E741
+
+
+def H(m):
+    return hashlib.sha512(m).digest()
+
+
+def expmod(b, e, m):
+    if e == 0:
+        return 1
+
+    t = expmod(b, e // 2, m) ** 2 % m
+    if e & 1:
+        t = (t * b) % m
+
+    return t
+
+
+# Can probably get some extra speedup here by replacing this with
+# an extended-euclidean, but performance seems OK without that
+def inv(x):
+    return expmod(x, q - 2, q)
+
+
+d = -121665 * inv(121666)
+I = expmod(2, (q - 1) // 4, q)  # noqa: E741
+
+
+def xrecover(y):
+    xx = (y * y - 1) * inv(d * y * y + 1)
+    x = expmod(xx, (q + 3) // 8, q)
+    if (x * x - xx) % q != 0:
+        x = (x * I) % q
+
+    if x % 2 != 0:
+        x = q - x
+
+    return x
+
+
+By = 4 * inv(5)
+Bx = xrecover(By)
+B = [Bx % q, By % q]
+
+
+# def edwards(P,Q):
+#    x1 = P[0]
+#    y1 = P[1]
+#    x2 = Q[0]
+#    y2 = Q[1]
+#    x3 = (x1*y2+x2*y1) * inv(1+d*x1*x2*y1*y2)
+#    y3 = (y1*y2+x1*x2) * inv(1-d*x1*x2*y1*y2)
+#    return (x3 % q,y3 % q)
+
+# def scalarmult(P,e):
+#    if e == 0: return [0,1]
+#    Q = scalarmult(P,e/2)
+#    Q = edwards(Q,Q)
+#    if e & 1: Q = edwards(Q,P)
+#    return Q
+
+# Faster (!) version based on:
+# https://www.hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
+
+def xpt_add(pt1, pt2):
+    (X1, Y1, Z1, T1) = pt1
+    (X2, Y2, Z2, T2) = pt2
+    A = ((Y1 - X1) * (Y2 + X2)) % q
+    B = ((Y1 + X1) * (Y2 - X2)) % q
+    C = (Z1 * 2 * T2) % q
+    D = (T1 * 2 * Z2) % q
+    E = (D + C) % q
+    F = (B - A) % q
+    G = (B + A) % q
+    H = (D - C) % q
+    X3 = (E * F) % q
+    Y3 = (G * H) % q
+    Z3 = (F * G) % q
+    T3 = (E * H) % q
+    return (X3, Y3, Z3, T3)
+
+
+def xpt_double(pt):
+    (X1, Y1, Z1, _) = pt
+    A = (X1 * X1)
+    B = (Y1 * Y1)
+    C = (2 * Z1 * Z1)
+    D = (-A) % q
+    J = (X1 + Y1) % q
+    E = (J * J - A - B) % q
+    G = (D + B) % q
+    F = (G - C) % q
+    H = (D - B) % q
+    X3 = (E * F) % q
+    Y3 = (G * H) % q
+    Z3 = (F * G) % q
+    T3 = (E * H) % q
+    return X3, Y3, Z3, T3
+
+
+def pt_xform(pt):
+    (x, y) = pt
+    return x, y, 1, (x * y) % q
+
+
+def pt_unxform(pt):
+    (x, y, z, _) = pt
+    return (x * inv(z)) % q, (y * inv(z)) % q
+
+
+def xpt_mult(pt, n):
+    if n == 0:
+        return pt_xform((0, 1))
+
+    _ = xpt_double(xpt_mult(pt, n >> 1))
+    return xpt_add(_, pt) if n & 1 else _
+
+
+def scalarmult(pt, e):
+    return pt_unxform(xpt_mult(pt_xform(pt), e))
+
+
+def encodeint(y):
+    bits = [(y >> i) & 1 for i in range(b)]
+    e = [(sum([bits[i * 8 + j] << j for j in range(8)]))
+         for i in range(b // 8)]
+    return asbytes(e)
+
+
+def encodepoint(P):
+    x = P[0]
+    y = P[1]
+    bits = [(y >> i) & 1 for i in range(b - 1)] + [x & 1]
+    e = [(sum([bits[i * 8 + j] << j for j in range(8)]))
+         for i in range(b // 8)]
+    return asbytes(e)
+
+
+def publickey(sk):
+    h = H(sk)
+    a = 2 ** (b - 2) + sum(2 ** i * bit(h, i) for i in range(3, b - 2))
+    A = scalarmult(B, a)
+    return encodepoint(A)
+
+
+def Hint(m):
+    h = H(m)
+    return sum(2 ** i * bit(h, i) for i in range(2 * b))
+
+
+def signature(m, sk, pk):
+    h = H(sk)
+    a = 2 ** (b - 2) + sum(2 ** i * bit(h, i) for i in range(3, b - 2))
+    inter = joinbytes([h[i] for i in range(b // 8, b // 4)])
+    r = Hint(inter + m)
+    R = scalarmult(B, r)
+    S = (r + Hint(encodepoint(R) + pk + m) * a) % l
+    return encodepoint(R) + encodeint(S)
+
+
+def isoncurve(P):
+    x = P[0]
+    y = P[1]
+    return (-x * x + y * y - 1 - d * x * x * y * y) % q == 0
+
+
+def decodeint(s):
+    return sum(2 ** i * bit(s, i) for i in range(0, b))
+
+
+def decodepoint(s):
+    y = sum(2 ** i * bit(s, i) for i in range(0, b - 1))
+    x = xrecover(y)
+    if x & 1 != bit(s, b - 1):
+        x = q - x
+
+    P = [x, y]
+    if not isoncurve(P):
+        raise Exception("decoding point that is not on curve")
+
+    return P
+
+
+def checkvalid(s, m, pk):
+    if len(s) != b // 4:
+        raise Exception("signature length is wrong")
+    if len(pk) != b // 8:
+        raise Exception("public-key length is wrong")
+
+    R = decodepoint(s[0:b // 8])
+    A = decodepoint(pk)
+    S = decodeint(s[b // 8:b // 4])
+    h = Hint(encodepoint(R) + pk + m)
+    v1 = scalarmult(B, S)
+    #  v2 = edwards(R,scalarmult(A,h))
+    v2 = pt_unxform(xpt_add(pt_xform(R), pt_xform(scalarmult(A, h))))
+    return v1 == v2
+
+
+##########################################################
+#
+# Curve25519 reference implementation by Matthew Dempsky, from:
+# https://cr.yp.to/highspeed/naclcrypto-20090310.pdf
+
+# P = 2 ** 255 - 19
+P = q
+A = 486662
+
+
+# def expmod(b, e, m):
+#    if e == 0: return 1
+#    t = expmod(b, e / 2, m) ** 2 % m
+#    if e & 1: t = (t * b) % m
+#    return t
+
+# def inv(x): return expmod(x, P - 2, P)
+
+
+def add(n, m, d):
+    (xn, zn) = n
+    (xm, zm) = m
+    (xd, zd) = d
+    x = 4 * (xm * xn - zm * zn) ** 2 * zd
+    z = 4 * (xm * zn - zm * xn) ** 2 * xd
+    return (x % P, z % P)
+
+
+def double(n):
+    (xn, zn) = n
+    x = (xn ** 2 - zn ** 2) ** 2
+    z = 4 * xn * zn * (xn ** 2 + A * xn * zn + zn ** 2)
+    return (x % P, z % P)
+
+
+def curve25519(n, base=9):
+    one = (base, 1)
+    two = double(one)
+
+    # f(m) evaluates to a tuple
+    # containing the mth multiple and the
+    # (m+1)th multiple of base.
+    def f(m):
+        if m == 1:
+            return (one, two)
+
+        (pm, pm1) = f(m // 2)
+        if m & 1:
+            return (add(pm, pm1, one), double(pm1))
+
+        return (double(pm), add(pm, pm1, one))
+
+    ((x, z), _) = f(n)
+    return (x * inv(z)) % P
+
+
+def genkey(n=0):
+    n = n or random.randint(0, P)
+    n &= ~7
+    n &= ~(128 << 8 * 31)
+    n |= 64 << 8 * 31
+    return n
+
+
+# def str2int(s):
+#    return int(hexlify(s), 16)
+#    # return sum(ord(s[i]) << (8 * i) for i in range(32))
+#
+# def int2str(n):
+#    return unhexlify("%x" % n)
+#    # return ''.join([chr((n >> (8 * i)) & 255) for i in range(32)])
+
+#################################################
+
+
+def dsa_test():
+    import os
+    msg = str(random.randint(q, q + q)).encode('utf-8')
+    sk = os.urandom(32)
+    pk = publickey(sk)
+    sig = signature(msg, sk, pk)
+    return checkvalid(sig, msg, pk)
+
+
+def dh_test():
+    sk1 = genkey()
+    sk2 = genkey()
+    return curve25519(sk1, curve25519(sk2)) == curve25519(sk2, curve25519(sk1))

env/lib/python3.6/site-packages/wheel/signatures/ed25519py.py

@@ -0,0 +1,50 @@
+import os
+import warnings
+from collections import namedtuple
+
+from . import djbec
+
+__all__ = ['crypto_sign', 'crypto_sign_open', 'crypto_sign_keypair', 'Keypair',
+           'PUBLICKEYBYTES', 'SECRETKEYBYTES', 'SIGNATUREBYTES']
+
+PUBLICKEYBYTES = 32
+SECRETKEYBYTES = 64
+SIGNATUREBYTES = 64
+
+Keypair = namedtuple('Keypair', ('vk', 'sk'))  # verifying key, secret key
+
+
+def crypto_sign_keypair(seed=None):
+    """Return (verifying, secret) key from a given seed, or os.urandom(32)"""
+    if seed is None:
+        seed = os.urandom(PUBLICKEYBYTES)
+    else:
+        warnings.warn("ed25519ll should choose random seed.",
+                      RuntimeWarning)
+    if len(seed) != 32:
+        raise ValueError("seed must be 32 random bytes or None.")
+    skbytes = seed
+    vkbytes = djbec.publickey(skbytes)
+    return Keypair(vkbytes, skbytes+vkbytes)
+
+
+def crypto_sign(msg, sk):
+    """Return signature+message given message and secret key.
+    The signature is the first SIGNATUREBYTES bytes of the return value.
+    A copy of msg is in the remainder."""
+    if len(sk) != SECRETKEYBYTES:
+        raise ValueError("Bad signing key length %d" % len(sk))
+    vkbytes = sk[PUBLICKEYBYTES:]
+    skbytes = sk[:PUBLICKEYBYTES]
+    sig = djbec.signature(msg, skbytes, vkbytes)
+    return sig + msg
+
+
+def crypto_sign_open(signed, vk):
+    """Return message given signature+message and the verifying key."""
+    if len(vk) != PUBLICKEYBYTES:
+        raise ValueError("Bad verifying key length %d" % len(vk))
+    rc = djbec.checkvalid(signed[:SIGNATUREBYTES], signed[SIGNATUREBYTES:], vk)
+    if not rc:
+        raise ValueError("rc != True", rc)
+    return signed[SIGNATUREBYTES:]

env/lib/python3.6/site-packages/wheel/signatures/keys.py

@@ -0,0 +1,101 @@
+"""Store and retrieve wheel signing / verifying keys.
+
+Given a scope (a package name, + meaning "all packages", or - meaning
+"no packages"), return a list of verifying keys that are trusted for that
+scope.
+
+Given a package name, return a list of (scope, key) suggested keys to sign
+that package (only the verifying keys; the private signing key is stored
+elsewhere).
+
+Keys here are represented as urlsafe_b64encoded strings with no padding.
+
+Tentative command line interface:
+
+# list trusts
+wheel trust
+# trust a particular key for all
+wheel trust + key
+# trust key for beaglevote
+wheel trust beaglevote key
+# stop trusting a key for all
+wheel untrust + key
+
+# generate a key pair
+wheel keygen
+
+# import a signing key from a file
+wheel import keyfile
+
+# export a signing key
+wheel export key
+"""
+
+import json
+import os.path
+
+from ..util import native, load_config_paths, save_config_path
+
+
+class WheelKeys(object):
+    SCHEMA = 1
+    CONFIG_NAME = 'wheel.json'
+
+    def __init__(self):
+        self.data = {'signers': [], 'verifiers': []}
+
+    def load(self):
+        # XXX JSON is not a great database
+        for path in load_config_paths('wheel'):
+            conf = os.path.join(native(path), self.CONFIG_NAME)
+            if os.path.exists(conf):
+                with open(conf, 'r') as infile:
+                    self.data = json.load(infile)
+                    for x in ('signers', 'verifiers'):
+                        if x not in self.data:
+                            self.data[x] = []
+                    if 'schema' not in self.data:
+                        self.data['schema'] = self.SCHEMA
+                    elif self.data['schema'] != self.SCHEMA:
+                        raise ValueError(
+                            "Bad wheel.json version {0}, expected {1}".format(
+                                self.data['schema'], self.SCHEMA))
+                break
+        return self
+
+    def save(self):
+        # Try not to call this a very long time after load()
+        path = save_config_path('wheel')
+        conf = os.path.join(native(path), self.CONFIG_NAME)
+        with open(conf, 'w+') as out:
+            json.dump(self.data, out, indent=2)
+        return self
+
+    def trust(self, scope, vk):
+        """Start trusting a particular key for given scope."""
+        self.data['verifiers'].append({'scope': scope, 'vk': vk})
+        return self
+
+    def untrust(self, scope, vk):
+        """Stop trusting a particular key for given scope."""
+        self.data['verifiers'].remove({'scope': scope, 'vk': vk})
+        return self
+
+    def trusted(self, scope=None):
+        """Return list of [(scope, trusted key), ...] for given scope."""
+        trust = [(x['scope'], x['vk']) for x in self.data['verifiers']
+                 if x['scope'] in (scope, '+')]
+        trust.sort(key=lambda x: x[0])
+        trust.reverse()
+        return trust
+
+    def signers(self, scope):
+        """Return list of signing key(s)."""
+        sign = [(x['scope'], x['vk']) for x in self.data['signers'] if x['scope'] in (scope, '+')]
+        sign.sort(key=lambda x: x[0])
+        sign.reverse()
+        return sign
+
+    def add_signer(self, scope, vk):
+        """Remember verifying key vk as being valid for signing in scope."""
+        self.data['signers'].append({'scope': scope, 'vk': vk})

env/lib/python3.6/site-packages/wheel/util.py

@@ -0,0 +1,156 @@
+"""Utility functions."""
+
+import base64
+import hashlib
+import json
+import os
+import sys
+
+__all__ = ['urlsafe_b64encode', 'urlsafe_b64decode', 'utf8',
+           'to_json', 'from_json', 'matches_requirement']
+
+
+# For encoding ascii back and forth between bytestrings, as is repeatedly
+# necessary in JSON-based crypto under Python 3
+if sys.version_info[0] < 3:
+    text_type = unicode  # noqa: F821
+
+    def native(s, encoding='ascii'):
+        return s
+else:
+    text_type = str
+
+    def native(s, encoding='ascii'):
+        if isinstance(s, bytes):
+            return s.decode(encoding)
+        return s
+
+
+def urlsafe_b64encode(data):
+    """urlsafe_b64encode without padding"""
+    return base64.urlsafe_b64encode(data).rstrip(binary('='))
+
+
+def urlsafe_b64decode(data):
+    """urlsafe_b64decode without padding"""
+    pad = b'=' * (4 - (len(data) & 3))
+    return base64.urlsafe_b64decode(data + pad)
+
+
+def to_json(o):
+    """Convert given data to JSON."""
+    return json.dumps(o, sort_keys=True)
+
+
+def from_json(j):
+    """Decode a JSON payload."""
+    return json.loads(j)
+
+
+def open_for_csv(name, mode):
+    if sys.version_info[0] < 3:
+        kwargs = {}
+        mode += 'b'
+    else:
+        kwargs = {'newline': '', 'encoding': 'utf-8'}
+
+    return open(name, mode, **kwargs)
+
+
+def utf8(data):
+    """Utf-8 encode data."""
+    if isinstance(data, text_type):
+        return data.encode('utf-8')
+    return data
+
+
+def binary(s):
+    if isinstance(s, text_type):
+        return s.encode('ascii')
+    return s
+
+
+class HashingFile(object):
+    def __init__(self, path, mode, hashtype='sha256'):
+        self.fd = open(path, mode)
+        self.hashtype = hashtype
+        self.hash = hashlib.new(hashtype)
+        self.length = 0
+
+    def write(self, data):
+        self.hash.update(data)
+        self.length += len(data)
+        self.fd.write(data)
+
+    def close(self):
+        self.fd.close()
+
+    def digest(self):
+        if self.hashtype == 'md5':
+            return self.hash.hexdigest()
+        digest = self.hash.digest()
+        return self.hashtype + '=' + native(urlsafe_b64encode(digest))
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.fd.close()
+
+
+if sys.platform == 'win32':
+    import ctypes.wintypes
+    # CSIDL_APPDATA for reference - not used here for compatibility with
+    # dirspec, which uses LOCAL_APPDATA and COMMON_APPDATA in that order
+    csidl = {'CSIDL_APPDATA': 26, 'CSIDL_LOCAL_APPDATA': 28, 'CSIDL_COMMON_APPDATA': 35}
+
+    def get_path(name):
+        SHGFP_TYPE_CURRENT = 0
+        buf = ctypes.create_unicode_buffer(ctypes.wintypes.MAX_PATH)
+        ctypes.windll.shell32.SHGetFolderPathW(0, csidl[name], 0, SHGFP_TYPE_CURRENT, buf)
+        return buf.value
+
+    def save_config_path(*resource):
+        appdata = get_path("CSIDL_LOCAL_APPDATA")
+        path = os.path.join(appdata, *resource)
+        if not os.path.isdir(path):
+            os.makedirs(path)
+        return path
+
+    def load_config_paths(*resource):
+        ids = ["CSIDL_LOCAL_APPDATA", "CSIDL_COMMON_APPDATA"]
+        for id in ids:
+            base = get_path(id)
+            path = os.path.join(base, *resource)
+            if os.path.exists(path):
+                yield path
+else:
+    def save_config_path(*resource):
+        import xdg.BaseDirectory
+        return xdg.BaseDirectory.save_config_path(*resource)
+
+    def load_config_paths(*resource):
+        import xdg.BaseDirectory
+        return xdg.BaseDirectory.load_config_paths(*resource)
+
+
+def matches_requirement(req, wheels):
+    """List of wheels matching a requirement.
+
+    :param req: The requirement to satisfy
+    :param wheels: List of wheels to search.
+    """
+    try:
+        from pkg_resources import Distribution, Requirement
+    except ImportError:
+        raise RuntimeError("Cannot use requirements without pkg_resources")
+
+    req = Requirement.parse(req)
+
+    selected = []
+    for wf in wheels:
+        f = wf.parsed_filename
+        dist = Distribution(project_name=f.group("name"), version=f.group("ver"))
+        if dist in req:
+            selected.append(wf)
+    return selected

env/lib/python3.6/site-packages/wheel/wininst2wheel.py

@@ -0,0 +1,219 @@
+#!/usr/bin/env python
+import distutils.dist
+import os.path
+import re
+import sys
+import tempfile
+import zipfile
+from argparse import ArgumentParser
+from glob import iglob
+from shutil import rmtree
+
+import wheel.bdist_wheel
+from wheel.archive import archive_wheelfile
+
+egg_info_re = re.compile(r'''(^|/)(?P<name>[^/]+?)-(?P<ver>.+?)
+    (-(?P<pyver>.+?))?(-(?P<arch>.+?))?.egg-info(/|$)''', re.VERBOSE)
+
+
+def parse_info(wininfo_name, egginfo_name):
+    """Extract metadata from filenames.
+
+    Extracts the 4 metadataitems needed (name, version, pyversion, arch) from
+    the installer filename and the name of the egg-info directory embedded in
+    the zipfile (if any).
+
+    The egginfo filename has the format::
+
+        name-ver(-pyver)(-arch).egg-info
+
+    The installer filename has the format::
+
+        name-ver.arch(-pyver).exe
+
+    Some things to note:
+
+    1. The installer filename is not definitive. An installer can be renamed
+       and work perfectly well as an installer. So more reliable data should
+       be used whenever possible.
+    2. The egg-info data should be preferred for the name and version, because
+       these come straight from the distutils metadata, and are mandatory.
+    3. The pyver from the egg-info data should be ignored, as it is
+       constructed from the version of Python used to build the installer,
+       which is irrelevant - the installer filename is correct here (even to
+       the point that when it's not there, any version is implied).
+    4. The architecture must be taken from the installer filename, as it is
+       not included in the egg-info data.
+    5. Architecture-neutral installers still have an architecture because the
+       installer format itself (being executable) is architecture-specific. We
+       should therefore ignore the architecture if the content is pure-python.
+    """
+
+    egginfo = None
+    if egginfo_name:
+        egginfo = egg_info_re.search(egginfo_name)
+        if not egginfo:
+            raise ValueError("Egg info filename %s is not valid" % (egginfo_name,))
+
+    # Parse the wininst filename
+    # 1. Distribution name (up to the first '-')
+    w_name, sep, rest = wininfo_name.partition('-')
+    if not sep:
+        raise ValueError("Installer filename %s is not valid" % (wininfo_name,))
+
+    # Strip '.exe'
+    rest = rest[:-4]
+    # 2. Python version (from the last '-', must start with 'py')
+    rest2, sep, w_pyver = rest.rpartition('-')
+    if sep and w_pyver.startswith('py'):
+        rest = rest2
+        w_pyver = w_pyver.replace('.', '')
+    else:
+        # Not version specific - use py2.py3. While it is possible that
+        # pure-Python code is not compatible with both Python 2 and 3, there
+        # is no way of knowing from the wininst format, so we assume the best
+        # here (the user can always manually rename the wheel to be more
+        # restrictive if needed).
+        w_pyver = 'py2.py3'
+    # 3. Version and architecture
+    w_ver, sep, w_arch = rest.rpartition('.')
+    if not sep:
+        raise ValueError("Installer filename %s is not valid" % (wininfo_name,))
+
+    if egginfo:
+        w_name = egginfo.group('name')
+        w_ver = egginfo.group('ver')
+
+    return {'name': w_name, 'ver': w_ver, 'arch': w_arch, 'pyver': w_pyver}
+
+
+def bdist_wininst2wheel(path, dest_dir=os.path.curdir):
+    bdw = zipfile.ZipFile(path)
+
+    # Search for egg-info in the archive
+    egginfo_name = None
+    for filename in bdw.namelist():
+        if '.egg-info' in filename:
+            egginfo_name = filename
+            break
+
+    info = parse_info(os.path.basename(path), egginfo_name)
+
+    root_is_purelib = True
+    for zipinfo in bdw.infolist():
+        if zipinfo.filename.startswith('PLATLIB'):
+            root_is_purelib = False
+            break
+    if root_is_purelib:
+        paths = {'purelib': ''}
+    else:
+        paths = {'platlib': ''}
+
+    dist_info = "%(name)s-%(ver)s" % info
+    datadir = "%s.data/" % dist_info
+
+    # rewrite paths to trick ZipFile into extracting an egg
+    # XXX grab wininst .ini - between .exe, padding, and first zip file.
+    members = []
+    egginfo_name = ''
+    for zipinfo in bdw.infolist():
+        key, basename = zipinfo.filename.split('/', 1)
+        key = key.lower()
+        basepath = paths.get(key, None)
+        if basepath is None:
+            basepath = datadir + key.lower() + '/'
+        oldname = zipinfo.filename
+        newname = basepath + basename
+        zipinfo.filename = newname
+        del bdw.NameToInfo[oldname]
+        bdw.NameToInfo[newname] = zipinfo
+        # Collect member names, but omit '' (from an entry like "PLATLIB/"
+        if newname:
+            members.append(newname)
+        # Remember egg-info name for the egg2dist call below
+        if not egginfo_name:
+            if newname.endswith('.egg-info'):
+                egginfo_name = newname
+            elif '.egg-info/' in newname:
+                egginfo_name, sep, _ = newname.rpartition('/')
+    dir = tempfile.mkdtemp(suffix="_b2w")
+    bdw.extractall(dir, members)
+
+    # egg2wheel
+    abi = 'none'
+    pyver = info['pyver']
+    arch = (info['arch'] or 'any').replace('.', '_').replace('-', '_')
+    # Wininst installers always have arch even if they are not
+    # architecture-specific (because the format itself is).
+    # So, assume the content is architecture-neutral if root is purelib.
+    if root_is_purelib:
+        arch = 'any'
+    # If the installer is architecture-specific, it's almost certainly also
+    # CPython-specific.
+    if arch != 'any':
+        pyver = pyver.replace('py', 'cp')
+    wheel_name = '-'.join((
+                          dist_info,
+                          pyver,
+                          abi,
+                          arch
+                          ))
+    if root_is_purelib:
+        bw = wheel.bdist_wheel.bdist_wheel(distutils.dist.Distribution())
+    else:
+        bw = _bdist_wheel_tag(distutils.dist.Distribution())
+
+    bw.root_is_pure = root_is_purelib
+    bw.python_tag = pyver
+    bw.plat_name_supplied = True
+    bw.plat_name = info['arch'] or 'any'
+
+    if not root_is_purelib:
+        bw.full_tag_supplied = True
+        bw.full_tag = (pyver, abi, arch)
+
+    dist_info_dir = os.path.join(dir, '%s.dist-info' % dist_info)
+    bw.egg2dist(os.path.join(dir, egginfo_name), dist_info_dir)
+    bw.write_wheelfile(dist_info_dir, generator='wininst2wheel')
+    bw.write_record(dir, dist_info_dir)
+
+    archive_wheelfile(os.path.join(dest_dir, wheel_name), dir)
+    rmtree(dir)
+
+
+class _bdist_wheel_tag(wheel.bdist_wheel.bdist_wheel):
+    # allow the client to override the default generated wheel tag
+    # The default bdist_wheel implementation uses python and abi tags
+    # of the running python process. This is not suitable for
+    # generating/repackaging prebuild binaries.
+
+    full_tag_supplied = False
+    full_tag = None  # None or a (pytag, soabitag, plattag) triple
+
+    def get_tag(self):
+        if self.full_tag_supplied and self.full_tag is not None:
+            return self.full_tag
+        else:
+            return super(_bdist_wheel_tag, self).get_tag()
+
+
+def main():
+    parser = ArgumentParser()
+    parser.add_argument('installers', nargs='*', help="Installers to convert")
+    parser.add_argument('--dest-dir', '-d', default=os.path.curdir,
+                        help="Directory to store wheels (default %(default)s)")
+    parser.add_argument('--verbose', '-v', action='store_true')
+    args = parser.parse_args()
+    for pat in args.installers:
+        for installer in iglob(pat):
+            if args.verbose:
+                print("{}... ".format(installer))
+                sys.stdout.flush()
+
+            bdist_wininst2wheel(installer, args.dest_dir)
+            if args.verbose:
+                print("OK")
+
+
+if __name__ == "__main__":
+    main()