Previously, by accessing the raw <qemu-guest-agent-configuration>
fields, 'qemu' would match the first field, which is the '%location'
field, not the 'qemu' field.
It would seem this bug has always been present since the addition of the
'location' field in d132d9f96b predates
the addition of 'qemu-guest-agent-service-type' in
f634a0baab.
Fixes <https://issues.guix.gnu.org/54041>.
Reported by Ricardo Wurmus <rekado@elephly.net>.
* gnu/services/virtualization.scm (qemu-guest-agent-shepherd-service):
Use accessors for <qemu-guest-agent-configuration>.