there isn't! git, at best! that's why submodules

and i think you can still build Go apps without modules enabled if you pull all the deps into a gopath

but go is at least decentralized in this area, as well as relatively intelligent and they provide a cache that means that once one person pulls a url/version tag everyone can use it even if the thing goes offline, which is like the actual benefit of the central system, flipped on its head

so, yeah, hah... ok fuck java then too, i'm putting it in the list of evils