Or maybe to this:

> > # guix system init config.scm /mnt/mnt/
> > ...
> > config.scm:64:9: WARNING: you may need these modules in the initrd for /dev/nvme0n1p2: shpchp  
>                    ^^^ not error
> > hint: Try adding them to the `initrd-modules' field of your `operating-system' declaration, along these lines:
> > 
> >       (operating-system
> >         ;; ...
> >         (initrd-modules (append (list "shpchp")
> >                                 %base-initrd-modules)))
> >
> > (sleeps 5 s)
> > (builds entire system)
> > (checks the slow, correct way at the end - when everything was built already anyway)