If i'm reading the code correctly, readiness notification currently works via a unnamed pipe between s6-supervise and its supervised subprocess. I'd like to tell s6-supervise that my service has become 'ready' from a parent process, which of course doesn't have access to that named pipe.
I realize this is highly unusual and possibly a problematic design on my part, but I think this would be a reasonable feature; could we promote that anonymous pipe to a named pipe under supervise/, please? supervise/notification seems like an obvious choice.
