From mboxrd@z Thu Jan  1 00:00:00 1970
From: cdelia@dc.uba.ar
Subject: rolling back only a single package
Date: Thu, 27 Dec 2018 16:52:23 -0300
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To: help-guix@gnu.org

Hi,

I upgraded guix a couple of days ago, installed some things and now I 
found that xmobar just keeps segfaulting.

Switching to specific generation it's really cool, but in this case 
would "uninstall" all the software that it's between the 
update-generation and the current one.

So, there is any way to just downgrade a single package (resolving it 
dependencies) with out doing a full switch?

I guess this it's connected to 
https://lists.gnu.org/archive/html/help-guix/2016-08/msg00028.html

And I could also switch and then manually re install. But maybe there is 
a standard or automatic way to do it.

Thanks!