This simple layer adds the evil-cleverparens package, which overrides common normal-mode vim commands like D, dd, c, etc. to keep parentheses balanced. See the repository for more details.
To use this configuration layer, add it to your ~/.spacemacs. You will need to
add evil-cleverparens to the existing dotspacemacs-configuration-layers list
in this file.
Then enable it in your user-config function and add your desired hooks, for
example:
(spacemacs/toggle-evil-cleverparens-on)
(add-hook 'clojure-mode-hook #'evil-cleverparens-mode)