from __future__ import absolute_import, unicode_literals from abc import ABCMeta, abstractmethod from six import add_metaclass @add_metaclass(ABCMeta) class Seeder(object): """A seeder will install some seed packages into a virtual environment.""" # noinspection PyUnusedLocal def __init__(self, options, enabled): """ :param options: the parsed options as defined within :meth:`add_parser_arguments` :param enabled: a flag weather the seeder is enabled or not """ self.enabled = enabled self.env = options.env @classmethod def add_parser_arguments(cls, parser, interpreter, app_data): """ Add CLI arguments for this seed mechanisms. :param parser: the CLI parser :param app_data: the CLI parser :param interpreter: the interpreter this virtual environment is based of """ raise NotImplementedError @abstractmethod def run(self, creator): """Perform the seed operation. :param creator: the creator (based of :class:`virtualenv.create.creator.Creator`) we used to create this \ virtual environment """ raise NotImplementedError