How about using PacletSite.mz file to build a paclet server? #40
Description
With a PacletSite.mz file on your server, users can install the newest and compatible paclet convenient by using PacletInstall["Rubi", "Site" -> "https://rulebasedintegration.org/"] easily.
Rubi is a famous project with Wolfram Language, I think such an improvement can help much.