From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@gnu.org>
Subject: Re: "guix system -u" and "guix system --list-packages"
Date: Tue, 16 Apr 2019 22:35:14 +0200
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References: <d2f9aaf311017e305c753aac4de2a19a@disroot.org>
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In-Reply-To: <d2f9aaf311017e305c753aac4de2a19a@disroot.org> (Raghav
	Gururajan's message of "Tue, 16 Apr 2019 10:41:59 +0000")
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To: Raghav Gururajan <rvgn@disroot.org>
Cc: guix-devel@gnu.org

Hello!

"Raghav Gururajan" <rvgn@disroot.org> skribis:

> Idea of adding following features to Guix.
>
> 1) Dedicated "guix system -u" separated from "guix system reconfigure". S=
o the difference between "guix system reconfigure" and "guix system -u" wou=
ld be; the former does changes to system configuration (including adding/up=
grading system packages) whereas the latter just upgrades system packages w=
ithout 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=E2=80=A6

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 sys=
tem generation. Could also add additional parameter (like "guix system --li=
st-packages #sys-gen") to list system packages in a different available sys=
tem generation.

What about:

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

?

Thanks,
Ludo=E2=80=99.