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  #   ˆl–äY>”*e¶…6 Ap-Ümµ1hßÅƒ}ö\ÄÃÂ &Ð    import distutils.version
import glob
import collections
import os
import os.path
import subprocess
import sys
import sysconfig
import tempfile
from importlib import resources


__all__ = ["version", "bootstrap"]
_PACKAGE_NAMES = ('setuptools', 'pip')

# Packages bundled in ensurepip._bundled have wheel_name set.
# Packages from WHEEL_PKG_DIR have wheel_path set.
_Package = collections.namedtuple('Package',
                                  ('version', 'wheel_name', 'wheel_path'))

# Directory of system wheel packages. Some Linux distribution packaging
# policies recommend against bundling dependencies. For example, Fedora
# installs wheel packages in the /usr/share/python-wheels/ directory and don't
# install the ensurepip._bundled package.
_WHEEL_PKG_DIR = "/opt/alt/python-internal/share/python-wheels/"

_wheels = {}

def _get_most_recent_wheel_version(pkg):
    prefix = os.path.join(_WHEEL_PKG_DIR, "{}-".format(pkg))
    _wheels[pkg] = {}
    for suffix in "-py2.py3-none-any.whl", "-py3-none-any.whl":
        pattern = "{}*{}".format(prefix, suffix)
        for path in glob.glob(pattern):
            version_str = path[len(prefix):-len(suffix)]
            _wheels[pkg][version_str] = os.path.basename(path)
    return str(max(_wheels[pkg], key=distutils.version.LooseVersion))

_SETUPTOOLS_VERSION = _get_most_recent_wheel_version("setuptools")
_PIP_VERSION = _get_most_recent_wheel_version("pip")
_PROJECTS = [
    ("setuptools", _SETUPTOOLS_VERSION, "py3"),
    ("pip", _PIP_VERSION, "py3"),
]


def _find_packages(path):
    packages = {}
    try:
        filenames = os.listdir(path)
    except OSError:
        # Ignore: path doesn't exist or permission error
        filenames = ()
    # Make the code deterministic if a directory contains multiple wheel files
    # of the same package, but don't attempt to implement correct version
    # comparison since this case should not happen.
    filenames = sorted(filenames)
    for filename in filenames:
        # filename is like 'pip-21.2.4-py3-none-any.whl'
        if not filename.endswith(".whl"):
            continue
        for name in _PACKAGE_NAMES:
            prefix = name + '-'
            if filename.startswith(prefix):
                break
        else:
            continue

        # Extract '21.2.4' from 'pip-21.2.4-py3-none-any.whl'
        version = filename.removeprefix(prefix).partition('-')[0]
        wheel_path = os.path.join(path, filename)
        packages[name] = _Package(version, None, wheel_path)
    return packages


def _get_packages():
    global _PACKAGES, _WHEEL_PKG_DIR
    if _PACKAGES is not None:
        return _PACKAGES

    packages = {}
    for name, version, py_tag in _PROJECTS:
        wheel_name =  _wheels[name][version]
        packages[name] = _Package(version, wheel_name, None)
    if _WHEEL_PKG_DIR:
        dir_packages = _find_packages(_WHEEL_PKG_DIR)
        # only used the wheel package directory if all packages are found there
        if all(name in dir_packages for name in _PACKAGE_NAMES):
            packages = dir_packages
    _PACKAGES = packages
    return packages
_PACKAGES = None


def _run_pip(args, additional_paths=None):
    # Run the bootstrapping in a subprocess to avoid leaking any state that happens
    # after pip has executed. Particularly, this avoids the case when pip holds onto
    # the files in *additional_paths*, preventing us to remove them at the end of the
    # invocation.
    code = f"""
import runpy
import sys
sys.path = {additional_paths or []} + sys.path
sys.argv[1:] = {args}
runpy.run_module("pip", run_name="__main__", alter_sys=True)
"""

    cmd = [
        sys.executable,
        '-W',
        'ignore::DeprecationWarning',
        '-c',
        code,
    ]
    if sys.flags.isolated:
        # run code in isolated mode if currently running isolated
        cmd.insert(1, '-I')
    return subprocess.run(cmd, check=True).returncode


def version():
    """
    Returns a string specifying the bundled version of pip.
    """
    return _get_packages()