Johannes Laute <j.laute3@googlemail.com> writes:

> How would I go about adding kernel modules permanently to my GuixSD system?

This is discussed in the following section of the manual:

  (guix) Initial RAM Disk

For example, you can specify extra kernel modules to load in the initrd
via the #:extra-modules keyword argument to the 'base-initrd'
procedure.

Hope that helps get you started!

-- 
Chris