spaceline and window numbering

;;;; modeline section
;; spaceline/powerline modeline  package
;; https://github.com/TheBB/spaceline

(require 'spaceline-config)
(spaceline-spacemacs-theme)
(setq spaceline-window-numbers-unicode t)
(setq spaceline-workspace-numbers-unicode t)

(setq ns-use-srgb-colorspace nil)
(setq spaceline-highlight-face-func 'spaceline-highlight-face-evil-state)

(if (display-graphic-p)
    ;; (setq powerline-default-separator 'arrow)
    (setq powerline-default-separator 'wave)
  (setq powerline-default-separator 'utf-8))
  ;; )
;; --------------------------------------------------

;;;; window-numbering
(use-package window-numbering
  :ensure t
  :config
  (defun window-numbering-install-mode-line (&optional position)
    "Do nothing, the display is handled by the powerline.")
  (setq window-numbering-auto-assign-0-to-minibuffer nil)
  (window-numbering-mode 1)
  ;; make sure neotree is always 0
  (defun spacemacs//window-numbering-assign ()
    "Custom number assignment for neotree."
    (if (and (boundp 'neo-buffer-name)
             (string= (buffer-name) neo-buffer-name)
             ;; in case there are two neotree windows. Example: when
             ;; invoking a transient state from neotree window, the new
             ;; window will show neotree briefly before displaying the TS,
             ;; causing an error message. the error is eliminated by
             ;; assigning 0 only to the top-left window
             (eq (selected-window) (window-at 0 0)))
        0)
    ;; set scratch to 9
    ;; (if (equal (buffer-name) "*scratch*") 9)
    )

  (setq window-numbering-assign-func
        (lambda () (spacemacs//window-numbering-assign)))

  )