Error: system: command not found.

[Jone]

I have a problem: can not run system reconfigure.
        address@hidden ~# guix system --help
        guix: system: command not found

'guix pull' launched 3 times in a row, each time gives the same output:
        compiling...    100.0% of 1 files
        compiling...    100.0% of 230 files
        compiling...    100.0% of 180 files
        compiling...    100.0% of 67 files
        compiling...    100.0% of 37 files
- in other words, it doesn't work.

Any ideas, how to reconfigure system? I can run 'guix system CMD' as
user, but for reconfigure need root permissions.
_________________________________________________________________________
Now:
working instance of guix:
~/Desktop> guix system list-generations
Generation 6    апр 25 2018 19:13:28    (current)
  file name: /var/guix/profiles/system-6-link
  canonical file name: /gnu/store/7n91925xqz6579rxq2md2605s4nzddlz-system
  label: GNU with Linux-Libre 4.16.4 (beta)