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Easy Install
------------

A tool for doing automatic download/extract/build of distutils-based Python
packages.  For detailed documentation, see the accompanying EasyInstall.txt
file, or visit the `EasyInstall home page`__.

__ https://setuptools.readthedocs.io/en/latest/easy_install.html

"""

from glob import glob
from distutils.util import get_platform
from distutils.util import convert_path, subst_vars
from distutils.errors import (
    DistutilsArgError, DistutilsOptionError,
    DistutilsError, DistutilsPlatformError,
)
from distutils.command.install import INSTALL_SCHEMES, SCHEME_KEYS
from distutils import log, dir_util
from distutils.command.build_scripts import first_line_re
from distutils.spawn import find_executable
import sys
import os
import zipimport
import shutil
import tempfile
import zipfile
import re
import stat
import random
import textwrap
import warnings
import site
import struct
import contextlib
import subprocess
import shlex
import io
import configparser


from sysconfig import get_config_vars, get_path

from setuptools import SetuptoolsDeprecationWarning

from setuptools import Command
from setuptools.sandbox import run_setup
from setuptools.command import setopt
from setuptools.archive_util import unpack_archive
from setuptools.package_index import (
    PackageIndex, parse_requirement_arg, URL_SCHEME,
)
from setuptools.command import bdist_egg, egg_info
from setuptools.wheel import Wheel
from pkg_resources import (
    yield_lines, normalize_path, resource_string, ensure_directory,
    get_distribution, find_distributions, Environment, Requirement,
    Distribution, PathMetadata, EggMetadata, WorkingSet, DistributionNotFound,
    VersionConflict, DEVELOP_DIST,
)
import pkg_resources

# Turn on PEP440Warnings
warnings.filterwarnings("default", category=pkg_resources.PEP440Warning)

__all__ = [
    'samefile', 'easy_install', 'PthDistributions', 'extract_wininst_cfg',
    'get_exe_prefixes',
]


def is_64bit():
    return struct.calcsize("P") == 8


def samefile(p1, p2):
    """
    Determine if two paths reference the same file.

    Augments os.path.samefile to work on Windows and
    suppresses errors if the path doesn't exist.
    """
    both_exist = os.path.exists(p1) and os.path.exists(p2)
    use_samefile = hasattr(os.path, 'samefile') and both_exist
    if use_samefile:
        return os.path.samefile(p1, p2)
    norm_p1 = os.path.normpath(os.path.normcase(p1))
    norm_p2 = os.path.normpath(os.path.normcase(p2))
    return norm_p1 == norm_p2


def _to_bytes(s):
    return s.encode('utf8')


def isascii(s):
    try:
        s.encode('ascii')
        return True
    except UnicodeError:
        return False


def _one_liner(text):
    return textwrap.dedent(text).strip().replace('\n', '; ')


class easy_install(Command):
    """Manage a download/build/install process"""
    description = "Find/get/install Python packages"
    command_consumes_arguments = True

    user_options = [
        ('prefix=', None, "installation prefix"),
        ("zip-ok", "z", "install package as a zipfile"),
        ("multi-version", "m", "make apps have to require() a version"),
        ("upgrade", "U", "force upgrade (searches PyPI for latest versions)"),
        ("install-dir=", "d", "install package to DIR"),
        ("script-dir=", "s", "install scripts to DIR"),
        ("exclude-scripts", "x", "Don't install scripts"),
        ("always-copy", "a", "Copy all needed packages to install dir"),
        ("index-url=", "i", "base URL of Python Package Index"),
        ("find-links=", "f", "additional URL(s) to search for packages"),
        ("build-directory=", "b",
         "download/extract/build in DIR; keep the results"),
        ('optimize=', 'O',
         "also compile with optimization: -O1 for \"python -O\", "
         "-O2 for \"python -OO\", and -O0 to disable [default: -O0]"),
        ('record=', None,
         "filename in which to record list of installed files"),
        ('always-unzip', 'Z', "don't install as a zipfile, no matter what"),
        ('site-dirs=