Same way it works in Java: by convention. You use the repository URL on e.g., github in the package name, so if that URL is unique then your package name is uni

Same way it works in Java: by convention. You use the repository URL on e.g., github in the package name, so if that URL is unique then your package name is unique. It rather relies on the assumption that you do have one unique canonical URL associated with your package for this to work, but one of the things about go is that a lot of it is based on pragmatic assumptions that turn out to be true often enough that the edge cases don't matter. If you use go get, it can auto-download any such publicly hosted packages, which is a nice feature, especially as it can get the dependencies for you as well.