I just do plugins via gen_event, isn’t that the easiest and most built-in way?
Literally I just send an event at whatever hook points I want and let whatever is listening to them do whatever they want at that point.
gen_event has it’s share of problems that I fixed in an erlang replacement library long ago, like using monitors instead of links (gen_event predates monitors did you know? ;-)). Does Elixir have a GenEvent that uses monitors? I’ve not actually checked, I just use my Erlang library in Elixir thus far… >.>
