bug#63726: time-machine without options does not get the latest commit

[Ludovic Courtès]

Hey!

Konrad Hinsen <konrad.hinsen@fastmail.net> skribis:

> This looks good to me. In practice, I doubt anyone would use -q with
> time-machine, because it makes more sense to specify an explicit channel
> file every time.

Yeah.  The use case I have in mind is something like:

  guix time-machine -q --commit=XYZ -- build hello

Useful, for example, to share a way to reproduce a bug, making sure
there’s nothing but the ‘guix’ channel.

Thanks for taking a look!

Ludo’.