Built-in venv doesn't have activate_this.py, but doesn't need it anyway.

    As long as we find the correct executable, built-in venv sets up the
    environment automatically.

    See: https://bugs.python.org/issue21496#msg218455

def _inline_activate_venv():
    """Built-in venv doesn't have activate_this.py, but doesn't need it anyway.

    As long as we find the correct executable, built-in venv sets up the
    environment automatically.

    See: https://bugs.python.org/issue21496#msg218455
    """
    components = []
    for name in ("bin", "Scripts"):
        bindir = os.path.join(project.virtualenv_location, name)
        if os.path.exists(bindir):
            components.append(bindir)
    if "PATH" in os.environ:
        components.append(os.environ["PATH"])
    os.environ["PATH"] = os.pathsep.join(components)