Hi Guix,
LKRG with default config on Guix system will resist executing modprobe. Its log message is like:
Oct 30 xx:xx:xx localhost vmunix: [ 2534.269558] LKRG: ALERT: BLOCK: UMH: Executing program name /gnu/store/fas8d76ws2xsdaiiyv822qy3tjx2an6x-modprobe
Kind regards,
Don