test-infra uses dep for Go dependency
management. dep is a prototype dependency management tool for Go. It requires
Go 1.8 or newer to compile.
You can follow the setup instructions to
set up dep in your local environment.
You can use the dep instructions for adding,
updating or
removing a dependency.
Once you've updated, make sure to run:
dep prune
hack/update-bazel.sh
To prune unneeded deps, and then update all the bazel files that dep blows away.
If dep ensure doesn't come back and freezes, please make sure hg command is
installed on your environment. dep ensure requires hg command for getting
bitbucket.org/ww/goautoneg , but dep ensure doesn't output such error message
and just freezes. reference