You're right, I meant something else - publishing artifacts happens on Maven repositories, using a Maven POM file as descriptor (or indeed an Ivy file, but libraries are usually published Maven-style).
I like this a lot. Setting up your own Maven repository on your own server, that can be internal or whatever, can be as simple as setting up a server that serves static files and the publishing itself is just copying files by means of SFTP or whatever. The protocol for finding all the listed dependencies on that server is also simple, so in case of problems you can usually understand what's going on.
This is much saner than the alternatives I've encountered on other platforms.