> I am not exactly sure what happened, but I think you should set the
> groups in the your operating config.
> 
> #+begin_src scheme
> (supplementary-groups
>   '("wheel" "netdev" "audio" "video")))
> #+end_src
> 
> to
> 
> #+begin_src scheme
> (supplementary-groups
>   '("wheel" "netdev" "audio" "video" "libvirt")))
> #+end_src
> 
> And then do a ~guix system reconfigure ..~. Your user should then be
> part of the libvirt group even after reboots.


Thank you very much.
I did as you said and it worked.
I am happy.
Gottfried

---------------------------------------------------------------------
#+begin_src scheme
(supplementary-groups
   '("wheel" "netdev" "audio" "video" "libvirt")))
#+end_src

And then do a ~guix system reconfigure ..~. Your user should then be
part of the libvirt group even after reboots.
Gottfried <gottfried@posteo.de> writes:

 > [[PGP Signed Part:Undecided]]
 > Am 24.09.22 um 23:05 schrieb Gottfried:
 >> Am 23.09.22 um 21:53 schrieb Vagrant Cascadian:
 >>> On 2022-09-23, gottfried@posteo.de wrote:
 >>>> I installed a VM software and I added libvirt and virtualization in my
 >>>> config.scm file (see below)
 >>> ...
 >>>>     (users (cons* (user-account
 >>>>                     (name "gfp")
 >>>>                     (comment "Gfp")
 >>>>                     (group "users")
 >>>>                     (home-directory "/home/gfp")
 >>>>                     (supplementary-groups
 >>>>                       '("wheel" "netdev" "audio" "video")))
 >>>>                   %base-user-accounts))
 >>> ...
 >>>>               (service libvirt-service-type
 >>>>                        (libvirt-configuration
 >>>>                         (unix-sock-group "libvirt")
 >>>>                         (tls-port "16555"))))
 >>> ...
 >>>> It seems I don't have the rights to start libvirt.
 >>>>
 >>>> How can I now solve the problem?
 >>>> Any thoughts?
 >>>
 >>> I would add your user the to group you configure libvirt-service-type
 >>> with, e.g. "libvirt" ... or configure libvirt-service-type with a
 >>> different group that your user is already a part of.
 >>>
 >>> live well,
 >>>    vagrant
 >> Hi,
 >> I added my user to the group "libvirt", but it didn't help. It gives
 >> the same error message.
 >> May be something else?
 >>   Gottfried
 >
 > Hi,
 >
 > it is very strange.
 >
 > I added my user"gfp" to the group "libvirt" and checked it yesterday,
 > and I was added into that group.
 >
 > It was through the command:
 > sudo usermod -a -G libvirt gfp
 >
 > But today, when I checked it again,
 > I was not in the group "libvirt"
 >
 > How can that be?
 >
 > [2. OpenPGP public key --- application/pgp-keys; 
OpenPGP_0x61FAF349C9FB7F94.asc]...
 >
 > [[End of PGP Signed Part]]

I am not exactly sure what happened, but I think you should set the
groups in the your operating config.

#+begin_src scheme
(supplementary-groups
   '("wheel" "netdev" "audio" "video")))
#+end_src

to

#+begin_src scheme
(supplementary-groups
   '("wheel" "netdev" "audio" "video" "libvirt")))
#+end_src

And then do a ~guix system reconfigure ..~. Your user should then be
part of the libvirt group even after reboots.
---------------------------------------------------------------