The Complete Computer

emacs-lisp source: 
(provide 'cce/code-base)

I like having line numbers when I'm programming.

emacs-lisp source: 
;; (setq linum-delay t
;;       linum-eager nil)
(add-hook 'prog-mode-hook 'display-line-numbers-mode)

Eldoc is useful wherever the major mode supports it

emacs-lisp source: 
(global-eldoc-mode)
(diminish 'eldoc-mode)