Ubuntu 16.04 plans for this: <a href="https:&#x2F;&#x2F;blueprints.launchpad.net&#x2F;ubuntu&#x2F;+spec&#x2F;foundations-x-python3-only" rel="nofollow">https:&#x2F;&#x2F;blueprints.launchpad.net&#x2F;ubuntu&#x2F;+spec&#x2F;foundations-x-...</a><p>Arch linux already has.