I've just added experimental support to "go routines" to Perlito's Go backend:
$ perl mp6.pl -Bgo -e ' go sub { say 123; say "aaa" }; go sub { say 456; say "bbb" }; say "here"; say "now"; '
here123456
nowaaabbb
Go "Channels" are not supported yet.
Great to see you're keeping working on this project!
Is there any plan to add a lua backend?
We're currently working on ngx_lua which embeds lua into the nginx core. And we're thinking about compiling your miniperl6 down to lua and running it in our web service platform
-agentzh