为Emacs加入MELPA源

编辑 ~/.emacs 文件

加入

;; melpa
(require 'package)
(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
(add-to-list 'package-archives '("melpa-stable" . "https://stable.melpa.org/packages/"))
(package-initialize)

保存并重启Emacs