Imports github.com/mitchellh/ioprogress gopkg.in/flosch/pongo2.v3 github.com/hashicorp/otto/ui github.com/hashicorp/go-cleanhttp github.com/hashicorp/go-checkpoint github.com/hashicorp/go-version Standard library imports bytes fmt io io/ioutil log os os/exec path/filepath regexp runtime strings archive/zip os/signal