elpy.el

      (with-help-window "*Elpy Error*"
        (with-current-buffer "*Elpy Error*"
          (view-mode 1)
          (let ((inhibit-read-only t))
            (erase-buffer)
            (insert "There was an error initializing the Elpy backend,\n"
                    "as the " missing-module " Python module was not found.\n"
                    "\n"
                    "Please install this module to use elpy.\n"))
          (pop-to-buffer (current-buffer))))