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from __future__ import absolute_import, unicode_literals
import abc
from textwrap import dedent
from six import add_metaclass
from virtualenv.create.describe import Python3Supports
from virtualenv.create.via_global_ref.builtin.ref import PathRefToDest
from virtualenv.create.via_global_ref.store import is_store_python
from virtualenv.util.path import Path
from .common import CPython, CPythonPosix, CPythonWindows, is_mac_os_framework
@add_metaclass(abc.ABCMeta)
class CPython3(CPython, Python3Supports):
""" """
class CPython3Posix(CPythonPosix, CPython3):
@classmethod
def can_describe(cls, interpreter):
return is_mac_os_framework(interpreter) is False and super(CPython3Posix, cls).can_describe(interpreter)
def env_patch_text(self):
text = super(CPython3Posix, self).env_patch_text()
if self.pyvenv_launch_patch_active(self.interpreter):
text += dedent(
"""
# for https://github.com/python/cpython/pull/9516, see https://github.com/pypa/virtualenv/issues/1704
import os
if "__PYVENV_LAUNCHER__" in os.environ:
del os.environ["__PYVENV_LAUNCHER__"]
""",
)
return text
@classmethod
def pyvenv_launch_patch_active(cls, interpreter):
ver = interpreter.version_info
return interpreter.platform == "darwin" and ((3, 7, 8) > ver >= (3, 7) or (3, 8, 3) > ver >= (3, 8))
class CPython3Windows(CPythonWindows, CPython3):
""" """
@classmethod
def setup_meta(cls, interpreter):
if is_store_python(interpreter): # store python is not supported here
return None
return super(CPython3Windows, cls).setup_meta(interpreter)
@classmethod
def sources(cls, interpreter):
for src in super(CPython3Windows, cls).sources(interpreter):
yield src
if not cls.has_shim(interpreter):
for src in cls.include_dll_and_pyd(interpreter):
yield src
@classmethod
def has_shim(cls, interpreter):
return interpreter.version_info.minor >= 7 and cls.shim(interpreter) is not None
@classmethod
def shim(cls, interpreter):
shim = Path(interpreter.system_stdlib) / "venv" / "scripts" / "nt" / "python.exe"
if shim.exists():
return shim
return None
@classmethod
def host_python(cls, interpreter):
if cls.has_shim(interpreter):
# starting with CPython 3.7 Windows ships with a venvlauncher.exe that avoids the need for dll/pyd copies
# it also means the wrapper must be copied to avoid bugs such as https://bugs.python.org/issue42013
return cls.shim(interpreter)
return super(CPython3Windows, cls).host_python(interpreter)
@classmethod
def include_dll_and_pyd(cls, interpreter):
dll_folder = Path(interpreter.system_prefix) / "DLLs"
host_exe_folder = Path(interpreter.system_executable).parent
for folder in [host_exe_folder, dll_folder]:
for file in folder.iterdir():
if file.suffix in (".pyd", ".dll"):
yield PathRefToDest(file, dest=cls.to_dll_and_pyd)
def to_dll_and_pyd(self, src):
return self.bin_dir / src.name
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