Re: "guix system -u" and "guix system --list-packages"

[Ludovic Courtès]

Hello!

"Raghav Gururajan" <address@hidden> skribis:

> Idea of adding following features to Guix.
>
> 1) Dedicated "guix system -u" separated from "guix system reconfigure". So 
> the difference between "guix system reconfigure" and "guix system -u" would 
> be; the former does changes to system configuration (including 
> adding/upgrading system packages) whereas the latter just upgrades system 
> packages without making changes to system configuration.

This command:

  guix package -p /run/current-system/profile -u

almost does that, but eventually fails because /run/current-system is
read-only.  Hmm…

Now, in principle, upgrading the system profile without upgrading system
services is not a good idea, because it could lead to inconsistencies.

For instance, the GNOME service consists of a set of Shepherd services
and D-Bus services, but it also populates the system profile.  All these
things need to be in sync.

> 2) "guix system --list-packages" lists all system packages in current system 
> generation. Could also add additional parameter (like "guix system 
> --list-packages #sys-gen") to list system packages in a different available 
> system generation.

What about:

  guix package -p /run/current-system/profile -I

?

Thanks,
Ludo’.