Re: guix-package --roll-back

[Ludovic Courtès]

Hi!

Nikita Karetnikov <address@hidden> skribis:

> I changed 'roll-back', but didn't add the command-line option.  Could
> you add it?

Yes, I just did it in 24e262f, along with a test case and documentation.

Thanks a lot for taking the time to work on this, I appreciate.

> Why do these lines raise the "non-literal format string" warning?
>
> +        (format (current-error-port)
> +                "error: '~a' is not a valid profile~%"
> +                profile)

Hmm, could be a bug, but I don’t seem to have them here.

> Also, is it possible to remove nested if statements?

Yes, with ‘cond’ or ‘match’.

I think we now have something that works well.  Commit 9241172 slightly
changes ‘roll-back’ to support roll-back when a past generation is
missing (which could happen when the user deletes it.)

So now I think I’m almost ready to tag 0.1 later tonight!

Thanks!

Ludo’.