mirror of
https://github.com/pypa/pip
synced 2023-12-13 21:30:23 +01:00
54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
"""Tools for working with virtualenv environments"""
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import os
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import sys
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import subprocess
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from pip.exceptions import BadCommand
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from pip.log import logger
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def restart_in_venv(venv, base, site_packages, args):
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"""
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Restart this script using the interpreter in the given virtual environment
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"""
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if base and not os.path.isabs(venv) and not venv.startswith('~'):
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base = os.path.expanduser(base)
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# ensure we have an abs basepath at this point:
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# a relative one makes no sense (or does it?)
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if os.path.isabs(base):
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venv = os.path.join(base, venv)
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if venv.startswith('~'):
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venv = os.path.expanduser(venv)
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if not os.path.exists(venv):
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try:
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import virtualenv
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except ImportError:
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print 'The virtual environment does not exist: %s' % venv
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print 'and virtualenv is not installed, so a new environment cannot be created'
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sys.exit(3)
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print 'Creating new virtualenv environment in %s' % venv
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virtualenv.logger = logger
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logger.indent += 2
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virtualenv.create_environment(venv, site_packages=site_packages)
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if sys.platform == 'win32':
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python = os.path.join(venv, 'Scripts', 'python.exe')
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# check for bin directory which is used in buildouts
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if not os.path.exists(python):
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python = os.path.join(venv, 'bin', 'python.exe')
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else:
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python = os.path.join(venv, 'bin', 'python')
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if not os.path.exists(python):
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python = venv
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if not os.path.exists(python):
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raise BadCommand('Cannot find virtual environment interpreter at %s' % python)
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base = os.path.dirname(os.path.dirname(python))
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file = os.path.join(os.path.dirname(__file__), 'runner.py')
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if file.endswith('.pyc'):
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file = file[:-1]
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proc = subprocess.Popen(
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[python, file] + args + [base, '___VENV_RESTART___'])
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proc.wait()
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sys.exit(proc.returncode)
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