Hi @hakayova
It may be worth your while reading this post here
If that doesn’t help could you post your current config.scm file please?
I have this as my channels.scm file in ~/.config/guix/channels.scm
(list (channel
(name 'guix)
(url "https://git.savannah.gnu.org/git/guix.git")
(branch "master")
(introduction
(make-channel-introduction
"9edb3f66fd807b096b48283debdcddccfea34bad"
(openpgp-fingerprint
"BBB0 2DDF 2CEA F6A8 0D1D E643 A2A0 6DF2 A33A 54FA"))))
(channel
(name 'nonguix)
(url "https://gitlab.com/nonguix/nonguix")
(introduction
(make-channel-introduction
"897c1a470da759236cc11798f4e0a5f7d4d59fbc"
(openpgp-fingerprint
"2A39 3FFF 68F4 EF7A 3D29 12AF 6F51 20A0 22FB B2D5")))))
And then run guix pull
I also have my system config file in the same location and run sudo guix system reconfigure ~/.config/guix/system.scm
Thanks. Hope that helps.