Oh, groovy!
Also thanks to @eborisch #libevent in #MacPorts now has a commit merged with a patch that is a *little* bit ahead of libevent's versioned release in order to ameliorate some issues with #LibreSSL noticed on versions above 3.5+ (this is related to what I was testing earlier today):
https://github.com/macports/macports-ports/pull/16681
Hopefully that helps folks who were running into issues such as documented in this Trac ticket: https://trac.macports.org/ticket/66096