musics--- via Bug reports for GNU Guix 写道：
> I added myself to this group using this method `sudo usermod -a 
> -G kvm username`. But the problem is not solved. Did I do this 
> wrong?

Yes.  Remember you're using Guix System, a (relatively) 
declarative operating system.

Read the ‘User Accounts’ section of the Guix manual, edit your 
configuration, reconfigure, and reboot.

Kind regards,

T G-R