Note initial addition of p5-AnyEvent-AIO version 1.1 as
devel/p5-AnyEvent-AIO into The NetBSD Packages Collection.

The Perl 5 module AnyEvent::AIO is an AnyEvent user. Loading it
will install the necessary magic to seamlessly integrate IO::AIO
into AnyEvent, i.e. you no longer need to concern yourself with
calling IO::AIO::poll_cb or any of that stuff.

(seb)