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✏️ Editing: venv.py

from __future__ import annotations

import logging
from copy import copy

from virtualenv.create.via_global_ref.store import handle_store_python
from virtualenv.discovery.py_info import PythonInfo
from virtualenv.util.error import ProcessCallFailedError
from virtualenv.util.path import ensure_dir
from virtualenv.util.subprocess import run_cmd

from .api import ViaGlobalRefApi, ViaGlobalRefMeta
from .builtin.cpython.mac_os import CPython3macOsBrew
from .builtin.pypy.pypy3 import Pypy3Windows

LOGGER = logging.getLogger(__name__)

class Venv(ViaGlobalRefApi):
    def __init__(self, options, interpreter) -> None:
        self.describe = options.describe
        super().__init__(options, interpreter)
        current = PythonInfo.current()
        self.can_be_inline = interpreter is current and interpreter.executable == interpreter.system_executable
        self._context = None

def _args(self):
        return super()._args() + ([("describe", self.describe.__class__.__name__)] if self.describe else [])

@classmethod
    def can_create(cls, interpreter):
        if interpreter.has_venv:
            if CPython3macOsBrew.can_describe(interpreter):
                return CPython3macOsBrew.setup_meta(interpreter)
            meta = ViaGlobalRefMeta()
            if interpreter.platform == "win32":
                meta = handle_store_python(meta, interpreter)
            return meta
        return None

def create(self):
        if self.can_be_inline:
            self.create_inline()
        else:
            self.create_via_sub_process()
        for lib in self.libs:
            ensure_dir(lib)
        super().create()
        self.executables_for_win_pypy_less_v37()

def executables_for_win_pypy_less_v37(self):
        """
        PyPy <= 3.6 (v7.3.3) for Windows contains only pypy3.exe and pypy3w.exe
        Venv does not handle non-existing exe sources, e.g. python.exe, so this
        patch does it.
        """  # noqa: D205
        creator = self.describe
        if isinstance(creator, Pypy3Windows) and creator.less_v37:
            for exe in creator.executables(self.interpreter):
                exe.run(creator, self.symlinks)

def create_inline(self):
        from venv import EnvBuilder  # noqa: PLC0415

builder = EnvBuilder(
            system_site_packages=self.enable_system_site_package,
            clear=False,
            symlinks=self.symlinks,
            with_pip=False,
        )
        builder.create(str(self.dest))

def create_via_sub_process(self):
        cmd = self.get_host_create_cmd()
        LOGGER.info("using host built-in venv to create via %s", " ".join(cmd))
        code, out, err = run_cmd(cmd)
        if code != 0:
            raise ProcessCallFailedError(code, out, err, cmd)

def get_host_create_cmd(self):
        cmd = [self.interpreter.system_executable, "-m", "venv", "--without-pip"]
        if self.enable_system_site_package:
            cmd.append("--system-site-packages")
        cmd.extend(("--symlinks" if self.symlinks else "--copies", str(self.dest)))
        return cmd

def set_pyenv_cfg(self):
        # prefer venv options over ours, but keep our extra
        venv_content = copy(self.pyenv_cfg.refresh())
        super().set_pyenv_cfg()
        self.pyenv_cfg.update(venv_content)

def __getattribute__(self, item):
        describe = object.__getattribute__(self, "describe")
        if describe is not None and hasattr(describe, item):
            element = getattr(describe, item)
            if not callable(element) or item == "script":
                return element
        return object.__getattribute__(self, item)

__all__ = [
    "Venv",
]

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