Installing the system from another distro

[Alex Kost]

Hello, I've tried to install the Guix system from my current system
("Arch Linux") where I use the Guix package manager:

  ./pre-inst-env guix system init /path/to/my-os-config.scm /mnt/guix

Unfortunately it failed (os-config and the backtrace are attached).
So I wonder: is installing from another distro supported? or the only
right way is to use an usb image?

Thanks in advance.

os-config.scm
Description: Text document

fail-log
Description: Text document