Dep (which is very similar to bundler) really solves most of the problems with Go dependency management and is the official tool everyone is converging to now: https://github.com/golang/dep
For the problems it doesn't solve I've created virtualgo at my job, which is similar to rvm or virtualenv: https://github.com/GetStream/vg
I just discovered VG yesterday. I am super excited to really try it out. That is what I loved about Python was Virtualenv and not having to install packages globally. So I am really looking forward to trying VG out.
For the problems it doesn't solve I've created virtualgo at my job, which is similar to rvm or virtualenv: https://github.com/GetStream/vg