shell completion

[cs01]

How would this feature be useful?

More efficient cli usage. Would autocomplete session names so nox -l doesn't have to be typed, and session names don't have to be fully typed out.

Describe the solution you'd like

Since nox uses argparse, it can use argcomplete to add tab completion functionality. https://github.com/kislyuk/argcomplete

I just added this to pipx (pypa/pipx#182) and I find it is helpful when completing package names. It was very easy to add (argcomplete is awesome!). In nox's case it would be really helpful to auto-complete session names.

[theacodes]

I would love to see this implemented.

[cs01]

I can give it a shot.

[theacodes]

I've marked this issue with open collective eligible which means that if someone takes this on we can pay them for the work via our Open Collective.