import os
import sys

from invoke import task

@task
def sync_env(c):
    """Update the local virtualenv with pip-sync"""
    if not os.environ.get('VIRTUAL_ENV'):
        print("You are operating outside of a virtualenv. Skipping sync...")
        sys.exit(1)
    print("Updating your virtualenv dependencies!")
    c.run("pip-sync ./requirements.txt ./dev_requirements.txt")