Extracted from:
Use the Spaceline modeline in Spacemacs.
Clone into Spacemacs private directory:
git clone https://github.com/turnspike/spacemacs-spaceline.git ~/.emacs.d/private/spacemacs-spaceline
Edit ~/.spacemacs
:
(defun dotspacemacs/layers ()
(setq-default dotspacemacs-configuration-layers
'(
...
(spacemacs-spaceline :location local)
...
)))