Long since moved to other systems and cannot comment relevantly. Nothing from me beyond "please close if closed".
What is the status of this bug  report 3 years ago?
On Wed, 12 Apr 2017 at 00:24, Mark Meyer <email@example.com> wrote:
>>>>>> "Drew" == Drew C <firstname.lastname@example.org> writes:
> Drew> Yes! I am running XFCE and/or also have Gnome installed.
> Drew> I will try xmonad ... is there an easy way to add it to
> Drew> config.scm so I can F1 to choose it, and if not, where/how to
> Drew> I configure GuixSD's X to use it?
> Drew> Otherwise, there is a pulseaudio jack sink that may work if I
> Drew> can be told where to put it.
> *grml* I think I messed up.
> First note:
> See the bottom of the page. It defines a `realtime' group and it's
> permissions. You might need to create this group and add yourself to it
> or you might simply use the `@audio' for the `audio' group, where you
> might already be a member.
> Second note: It still doesn't work, but it's too late to look into
> this. :( Could take care of this tomorrow.
If it is still relevant, could you add more info and/or context?
All the best,