Hi Einar,

Disclaimer: I'm not a Geiser guru, but I don't think it relieves 
you of importing modules?

When I run M-x geiser followed by a

  (use-modules (gnu packages))

then specifications->manifest does the needful.

If that still doesn't work for you, it might be that 
GUILE_LOAD_PATH isn't automatically set up on foreign distros.  On 
my Guix System it set to 
"/run/current-system/profile/share/guile/site/3.0" (which won't 
exist for you).

Perhaps setting it to your 
"$HOME/.guix-profile/share/guile/site/3.0" will work, or perhaps 
it will break something else…

Kind regards,

T G-R