Switch from smart-mode-line to spaceline

It looks much more beautiful.

With this, i also ditch my header line. Spaceline is really efficient with using modeline space
without using that.

configuration.org

@@ -1409,65 +1409,15 @@ Unfortunately, this works only in a graphical mode.
 
 ** Eye candy
 
-*** Smart mode-line
+*** Spaceline
 
 #+BEGIN_SRC emacs-lisp
-(use-package smart-mode-line
-  :after
-  org
+(use-package spaceline
   :config
-  (add-to-list 'sml/replacer-regexp-list
-               '("^~/Projects/" ":Proj:")
-               t)
-  (add-to-list 'sml/replacer-regexp-list
-               '("^~/Projektek/" ":Proj:")
-               t)
-  (add-to-list 'sml/replacer-regexp-list
-               (list (concat "^" (regexp-quote user-documents-directory))
-                     ":Doc:")
-               t)
-  (add-to-list 'sml/replacer-regexp-list
-               '("^:Proj:jekyll/gergelypolonkai.github.io/" ":Blog:")
-               t)
-  (add-to-list 'sml/replacer-regexp-list
-               (list "^:Proj:python/" ":Proj:Py:")
-               t)
-  (sml/setup)
-  (require 'cl-lib)
-  (setq-default header-line-format
-                '(""
-                  mode-line-mule-info
-                  mode-line-client
-                  mode-line-modified
-                  mode-line-remote
-                  mode-line-frame-identification
-                  mode-line-buffer-identification
-                  sml/pos-id-separator
-                  (vc-mode vc-mode)
-                  mode-line-position))
-  (delete '(vc-mode vc-mode) mode-line-format)
-  (delete 'mode-line-frame-identification mode-line-format)
-  (delete 'mode-line-buffer-identification mode-line-format)
-  (delete 'mode-line-position mode-line-format)
-  (delete 'mode-line-mule-info mode-line-format)
-  (delete 'mode-line-modified mode-line-format)
-  (delete 'mode-line-client mode-line-format)
-  (delete 'mode-line-remote mode-line-format)
-  ;; Add sml/pre-id-separator after mode-line-front-space
-  (let* ((front-space-position (1+ (cl-position 'mode-line-front-space mode-line-format)))
-         (mode-line-rest (nthcdr front-space-position mode-line-format))
-         (mode-line-beg (cl-subseq mode-line-format 0 front-space-position)))
-    (setq-default mode-line-format (nconc mode-line-beg
-                                          (list sml/pre-id-separator)
-                                          mode-line-rest))))
-#+END_SRC
-
-*** Powerline theme for ~smart-mode-line~
-
-#+BEGIN_SRC emacs-lisp
-(use-package smart-mode-line-powerline-theme
-  :init
-  (setq-default sml/theme 'powerline))
+  (setq powerline-default-separator 'wave)
+  (require 'spaceline-config)
+  (spaceline-emacs-theme)
+  (spaceline-helm-mode))
 #+END_SRC
 
 *** Minions

customizations.el

@@ -166,9 +166,8 @@
      s
      sass-mode
      secretaria
-     smart-mode-line
-     smart-mode-line-powerline-theme
      smartparens
+     spaceline
      sphinx-doc
      spinner
      sx