Can't boot SuperCollider

[Lee Thompson]

Hi All,

I'm having a lot of trouble getting SuperCollider working on Guix.  I've
installed the package by adding it to my home-configuration.scm and
reconfiguring home, though I can't get it to boot the server.

I can load the IDE and the sclang interpreter but when I run `s.boot;`
or `Server.default.boot;` I get the following error:
> Booting server 'localhost' on address 127.0.0.1:57110.
> terminate called without an active exception
> Server 'localhost' exited with exit code 0.

I've added my user to the realtime group and added this bit of PAM
service code the manual talks about to my /etc/config.scm:
> (service pam-limits-service-type
>          (list
>           (pam-limits-entry "@realtime" 'both 'rtprio 99)
>           (pam-limits-entry "@realtime" 'both 'memlock 'unlimited)))

But this has changed nothing.  I've got no idea what's breaking here;
I'm using a default GNOME system almost fresh from the installer.  Could
someone tell me what I'm doing wrong and how to get this all working
please?

Any help appreciated, thanks