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from __future__ import absolute_import, unicode_literals
from abc import ABCMeta
from collections import OrderedDict
from six import add_metaclass
from virtualenv.create.describe import PosixSupports, WindowsSupports
from virtualenv.util.path import Path
from ..via_global_self_do import ViaGlobalRefVirtualenvBuiltin
@add_metaclass(ABCMeta)
class CPython(ViaGlobalRefVirtualenvBuiltin):
@classmethod
def can_describe(cls, interpreter):
return interpreter.implementation == "CPython" and super(CPython, cls).can_describe(interpreter)
@classmethod
def exe_stem(cls):
return "python"
@add_metaclass(ABCMeta)
class CPythonPosix(CPython, PosixSupports):
"""Create a CPython virtual environment on POSIX platforms"""
@classmethod
def _executables(cls, interpreter):
host_exe = Path(interpreter.system_executable)
major, minor = interpreter.version_info.major, interpreter.version_info.minor
targets = OrderedDict(
(i, None) for i in ["python", "python{}".format(major), "python{}.{}".format(major, minor), host_exe.name]
)
yield host_exe, list(targets.keys())
@add_metaclass(ABCMeta)
class CPythonWindows(CPython, WindowsSupports):
@classmethod
def _executables(cls, interpreter):
host = Path(interpreter.system_executable)
for path in (host.parent / n for n in {"python.exe", host.name}):
yield host, [path.name]
# for more info on pythonw.exe see https://stackoverflow.com/a/30313091
python_w = host.parent / "pythonw.exe"
yield python_w, [python_w.name]
def is_mac_os_framework(interpreter):
if interpreter.platform == "darwin":
framework_var = interpreter.sysconfig_vars.get("PYTHONFRAMEWORK")
value = "Python3" if interpreter.version_info.major == 3 else "Python"
return framework_var == value
return False
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