net.server_select: Deprecate and warn about it To be removed in the future, but not right now. Give the log warning a chance to prod anyone who might have network_backend="select" in their config first. There's also things built on Verse which uses server_select.lua, which will need to be updated somehow.

module:log("error", "mod_pep_plus has been renamed to mod_pep, please update your config file. Auto-loading mod_pep...");
module:depends("pep");