From mboxrd@z Thu Jan  1 00:00:00 1970
From: Fredrik Salomonsson <plattfot@gmail.com>
Subject: Re: How add user without update package
Date: Wed, 10 Jul 2019 14:35:18 -0700
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References: <e61c38b3-9449-1ab2-463e-ab91bc18eae9@pirboazo.net>
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To: Pirboazo <pib@pirboazo.net>
Cc: help-guix <help-guix@gnu.org>

Hi Pierre,

Den ons 10 juli 2019 kl 12:17 skrev Pirboazo <pib@pirboazo.net>:

> Hello Everybody,
>
> I want add an user on my system but not update all packages.
>
> An user on on IRC channel #guix said me :
>
> > just use the same commit as you did when you last reconfigured with
> the modified config.scm's only change in the users section
>
> I don't understand how to launch reconfigure with the same commit.
>
> i understand  to change the commit , i must use the command :  guix pull
>
> If i don't modify the commit
>
> How  it'spossible than the command *guix system reconfigure* launch the
> build of a new configuration.
>
> Thank for your help.
>
> Pierre
>

It is as simple as running
`guix system reconfigure /path/to/config.scm`.

That will reconfigure your os using the config file based on the current
commit of guix.

Only way to change the commit, as you said, is `guix pull`.

Which is why when updating Guix System. You first run `guix pull`, to
get new versions of packages etc. Then `guix system reconfigure` to
reconfigure your os based on that commit.

I hope that clears it up.
-- 
s/Fred[re]+i[ck]+/Fredrik/g