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81 lines
2.9 KiB
Python
81 lines
2.9 KiB
Python
5 years ago
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from __future__ import absolute_import, unicode_literals
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import logging
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from copy import copy
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from virtualenv.create.via_global_ref.store import handle_store_python
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from virtualenv.discovery.py_info import PythonInfo
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from virtualenv.util.error import ProcessCallFailed
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from virtualenv.util.path import ensure_dir
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from virtualenv.util.subprocess import run_cmd
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from .api import ViaGlobalRefApi, ViaGlobalRefMeta
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class Venv(ViaGlobalRefApi):
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def __init__(self, options, interpreter):
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self.describe = options.describe
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super(Venv, self).__init__(options, interpreter)
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self.can_be_inline = (
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interpreter is PythonInfo.current() and interpreter.executable == interpreter.system_executable
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)
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self._context = None
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def _args(self):
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return super(Venv, self)._args() + ([("describe", self.describe.__class__.__name__)] if self.describe else [])
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@classmethod
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def can_create(cls, interpreter):
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if interpreter.has_venv:
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meta = ViaGlobalRefMeta()
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if interpreter.platform == "win32" and interpreter.version_info.major == 3:
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meta = handle_store_python(meta, interpreter)
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return meta
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return None
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def create(self):
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if self.can_be_inline:
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self.create_inline()
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else:
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self.create_via_sub_process()
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for lib in self.libs:
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ensure_dir(lib)
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super(Venv, self).create()
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def create_inline(self):
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from venv import EnvBuilder
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builder = EnvBuilder(
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system_site_packages=self.enable_system_site_package, clear=False, symlinks=self.symlinks, with_pip=False,
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)
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builder.create(str(self.dest))
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def create_via_sub_process(self):
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cmd = self.get_host_create_cmd()
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logging.info("using host built-in venv to create via %s", " ".join(cmd))
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code, out, err = run_cmd(cmd)
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if code != 0:
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raise ProcessCallFailed(code, out, err, cmd)
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def get_host_create_cmd(self):
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cmd = [self.interpreter.system_executable, "-m", "venv", "--without-pip"]
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if self.enable_system_site_package:
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cmd.append("--system-site-packages")
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cmd.append("--symlinks" if self.symlinks else "--copies")
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cmd.append(str(self.dest))
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return cmd
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def set_pyenv_cfg(self):
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# prefer venv options over ours, but keep our extra
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venv_content = copy(self.pyenv_cfg.refresh())
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super(Venv, self).set_pyenv_cfg()
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self.pyenv_cfg.update(venv_content)
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def __getattribute__(self, item):
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describe = object.__getattribute__(self, "describe")
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if describe is not None and hasattr(describe, item):
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element = getattr(describe, item)
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if not callable(element) or item in ("script",):
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return element
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return object.__getattribute__(self, item)
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