Mercurial > repos > shellac > sam_consensus_v3
view env/lib/python3.9/site-packages/virtualenv/run/plugin/creators.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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from __future__ import absolute_import, unicode_literals from collections import OrderedDict, defaultdict, namedtuple from virtualenv.create.describe import Describe from virtualenv.create.via_global_ref.builtin.builtin_way import VirtualenvBuiltin from .base import ComponentBuilder CreatorInfo = namedtuple("CreatorInfo", ["key_to_class", "key_to_meta", "describe", "builtin_key"]) class CreatorSelector(ComponentBuilder): def __init__(self, interpreter, parser): creators, self.key_to_meta, self.describe, self.builtin_key = self.for_interpreter(interpreter) super(CreatorSelector, self).__init__(interpreter, parser, "creator", creators) @classmethod def for_interpreter(cls, interpreter): key_to_class, key_to_meta, builtin_key, describe = OrderedDict(), {}, None, None errors = defaultdict(list) for key, creator_class in cls.options("virtualenv.create").items(): if key == "builtin": raise RuntimeError("builtin creator is a reserved name") meta = creator_class.can_create(interpreter) if meta: if meta.error: errors[meta.error].append(creator_class) else: if "builtin" not in key_to_class and issubclass(creator_class, VirtualenvBuiltin): builtin_key = key key_to_class["builtin"] = creator_class key_to_meta["builtin"] = meta key_to_class[key] = creator_class key_to_meta[key] = meta if describe is None and issubclass(creator_class, Describe) and creator_class.can_describe(interpreter): describe = creator_class if not key_to_meta: if errors: rows = ["{} for creators {}".format(k, ", ".join(i.__name__ for i in v)) for k, v in errors.items()] raise RuntimeError("\n".join(rows)) else: raise RuntimeError("No virtualenv implementation for {}".format(interpreter)) return CreatorInfo( key_to_class=key_to_class, key_to_meta=key_to_meta, describe=describe, builtin_key=builtin_key, ) def add_selector_arg_parse(self, name, choices): # prefer the built-in venv if present, otherwise fallback to first defined type choices = sorted(choices, key=lambda a: 0 if a == "builtin" else 1) default_value = self._get_default(choices) self.parser.add_argument( "--{}".format(name), choices=choices, default=default_value, required=False, help="create environment via{}".format( "" if self.builtin_key is None else " (builtin = {})".format(self.builtin_key), ), ) @staticmethod def _get_default(choices): return next(iter(choices)) def populate_selected_argparse(self, selected, app_data): self.parser.description = "options for {} {}".format(self.name, selected) self._impl_class.add_parser_arguments(self.parser, self.interpreter, self.key_to_meta[selected], app_data) def create(self, options): options.meta = self.key_to_meta[getattr(options, self.name)] if not issubclass(self._impl_class, Describe): options.describe = self.describe(options, self.interpreter) return super(CreatorSelector, self).create(options)