Re: downgrade issue on guix system

[Julien Lepiller]

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
>
>