Re: downgrade issue on guix system

[Julien Lepiller]

Le 25 novembre 2021 07:06:19 GMT-05:00, Alexander Asteroth 
<alexander.asteroth@h-brs.de> a écrit :
>No I did not play around with branches. What I did was
>- changed my config
>- reconfigured
>- rebooted
>- failed
>- booted second last config
>- fixed config
>- reconfigured
>- rebooted
>- OK
>- pulled
>- added cups
>- reconfigured
>---->>> ERROR
>
>I just tried again. Did a
>
>GUIX_PROFILE="~/.guix-profile" &&      . "$GUIX_PROFILE/etc/profile"
>hash guix
>guix system reconfigure .../config.scm

This is not enough: you need to also load the "current" profile. Check the 
output of "type guix" too.

>
>Same error.
>
>Is there a way to find out what goes wrong? And why I have something
>installed that is newer than what I get over the guix channel?

I think this is because you're not actually running guix from the latest you 
pulled. Make sure it's running from ~/.config/guix/current, not ~/.guix-profile 
nor /var/guix.

This should already be taken care of by default, but if this is your first guix 
pull you might need a reboot (or at least log out, and in again).

>
>-- Alex
>
>On Thu, Nov 25 2021, 06:53:59, Julien Lepiller <julien@lepiller.eu> wrote:
>
>> Hi Alexander,
>>
>> Since you did a guix pull, you should have a newer version of guix than you 
>> had before, unless you played with branches. So the downgrade is worrying 
>> and you were right to stop there.
>>
>> Note that running guix pull will update guix in a separate profile. Make 
>> sure it's loaded: that you have ~/.config/guix/current/bin in your path and 
>> that "type guix" is this path. If not, fix
>> your $PATH and run "hash guix" (no output) and check again.
>>
>> Note that, if you're running reconfigure as root (instead as with sudo) 
>> you'll need to pull and do the above as root, since each user has a 
>> different guix current profile.
>>
>> HTH!
>>
>> Le 25 novembre 2021 06:38:29 GMT-05:00, Alexander Asteroth 
>> <alexander.asteroth@h-brs.de> a écrit :
>>
>>  Dear all,
>>
>> I just wanted to install cups service on my guix system. I recofigured
>> the system without an error one hour ago (introduced seperate home
>> filesystem) and now, when I try to add the cups service (I did a guix
>> pull in between as well) I get:
>>
>>  guix system: error: aborting reconfiguration because commit 
>> bd2aa8031babdca5f574fca52e025d6794f08d82 of channel 'guix' is not a 
>> descendant of
>>  7f974548ac20cab88b9bb589a5e1d85ee3b8d337
>> hint: Use `--allow-downgrades' to force this downgrade.
>>
>> I have no clue what caused that error therefor I also don't know if it's
>> a good idea to allow downgrades. ... or what es to do to resolve the
>> issue.
>>
>> Cheers,
>>
>> Alex
>