Files
obitools3/distutils.ext/obidistutils/serenity/virtual.py

69 lines
1.8 KiB
Python

'''
Created on 2 oct. 2014
@author: coissac
'''
import os
import sys
import venv
from distutils.errors import DistutilsError
from .globals import local_virtualenv # @UnusedImport
from .checkpython import which_virtualenv,\
is_python_version, \
is_a_virtualenv_python
def serenity_virtualenv(envname,package,version,minversion='3.4',maxversion=None):
#
# Checks if we are already running under the good virtualenv
#
ve = which_virtualenv(full=True)
if ve == os.path.realpath(envname) and is_python_version(minversion=minversion,maxversion=maxversion):
return sys.executable
#
# Check if the virtualenv exist
#
python = None
if os.path.isdir(envname):
python = os.path.join(envname,'bin','python')
ok = (is_python_version(python,
minversion=minversion,
maxversion=maxversion) and
is_a_virtualenv_python(python))
#
# The virtualenv already exist but it is not ok
#
if not ok:
raise DistutilsError("A virtualenv %s already exists but not with the required python")
else:
ok = False
#
# Creates a new virtualenv
#
if not ok:
venv.create(envname,
system_site_packages=False,
clear=True,
symlinks=False,
with_pip=True)
# check the newly created virtualenv
return serenity_virtualenv(envname,package,version)
return os.path.realpath(python)