bug#44928: guix upgrade command does not accept a list of packages

[zimoun]

Hi,

On Sat, 28 Nov 2020 at 18:51, Luis Felipe via Bug reports for GNU Guix 
<bug-guix@gnu.org> wrote:

> 1. guix pull
> 2. guix upgrade --dry-run
> 3. Pick two packages from the list shown in (2), say, packages A and B
> 4. guix upgrade A B
>
>
> ## Expected result
>
> Packages A and B are upgraded.

Fixed by 86971616c139597ffa9e20acc75533ff90176450.

Thanks,
simon