go-guru-scope.el

(defun coder/go-guru-set-current-package-as-main ()
  "GoGuru requires the scope to be set to a go package which
   contains a main, this function will make the current package the
   active go guru scope, assuming it contains a main"
  (interactive)
  (let* ((filename (buffer-file-name))
         (gopath-src-path (concat (file-name-as-directory (go-guess-gopath)) "src"))
         (relative-package-path (directory-file-name (file-name-directory (file-relative-name filename gopath-src-path)))))
    (setq go-guru-scope relative-package-path)))