Command github.com/govim/govim/cmd/govim (referred to simply as govim) is a Go development plugin for Vim8, much like vim-go. It has features like code completion, format-on-save, hover details and go-to definition, all of which are driven by gopls, the Language Server Protocol server for Go. See govim plugin API for more details. Installation instructions in the main README.

Package github.com/govim/govim provides an API for plugin developers to interface with Vim8 in Go. More details here.