from __future__ import unicode_literals

from pre_commit.util import cmd_output


def run_setup_cmd(runner, cmd):
    cmd_output(*cmd, cwd=runner.prefix_dir, encoding=None)


def environment_dir(ENVIRONMENT_DIR, language_version):
    if ENVIRONMENT_DIR is None:
        return None
    else:
        return '{0}-{1}'.format(ENVIRONMENT_DIR, language_version)