How to hook a function when all buffers load?

[danielkrajnik]

I'm trying to clear the clutter that is created when opening .ipynb file by default - unfortunately this doesn't work. I assume that this must fire before all buffers are created.

(add-hook 'ein:ipynb-mode-hook
          (lambda ()
            (cl-letf (((symbol-function 'read-directory-name)
                       (lambda (_prompt dir &rest _args) dir)))
              (ein:process-find-file-callback)
              (mapc 'switch-to-buffer
                     (cl-remove-if-not (lambda (b)
                      (and
                       (string-match-p "ein" (buffer-name b))
                       (string-match-p "ipynb" (buffer-name b))))
                    (buffer-list)))
              (delete-other-windows)
                )))

Is there any way to wait until everything is ready to run it?

You really just want to open that rendered buffer - it really isn't necessary to split the workspace or keep raw json buffer.