caff155564
Same fix as in D230875, just for the `mach` site creation as well. The implementation is slightly different, since the virtualenv root can be `None`. Differential Revision: https://phabricator.services.mozilla.com/D246806
==== mach ==== Mach (German for *do*) is a generic command dispatcher for the command line. To use mach, you install the mach core (a Python package), create an executable *driver* script (named whatever you want), and write mach commands. When the *driver* is executed, mach dispatches to the requested command handler automatically. To learn more, read the docs in ``docs/``.