you dont need to install phx props, phx is a default part of gmod now, meaning its already there for build, wiremod obviously easy precision (which teddi deleted and should be readding hopefully) smartsnap some other tools, join the server and see what you dont have
EP broke in the recent Gmod update. If you're talking about our build server, it also forces the client to use smartsnap. Otherwise the server itself will provide any extra content it needs to.