@deftypevr {@code{prosody-configuration} parameter} maybe-string log
Set logging options. Advanced logging configuration is not yet supported
-by the Guix Prosody Service. See @url{https://prosody.im/doc/logging}.
+by the Prosody service. See @url{https://prosody.im/doc/logging}.
Defaults to @samp{"*syslog"}.
@end deftypevr