emacs100
1. 官方源
(setq package-archives '(("gnu" . "https://elpa.gnu.org/packages/") ("melpa" . "https://melpa.org/packages/")))
2. 清华源
(setq package-archives '(("gnu" . "http://mirrors.tuna.tsinghua.edu.cn/elpa/gnu/") ("melpa" . "http://mirrors.tuna.tsinghua.edu.cn/elpa/melpa/")))
3. 腾讯源
(setq package-archives '(("gnu" . "http://mirrors.cloud.tencent.com/elpa/gnu/") ("melpa" . "http://mirrors.cloud.tencent.com/elpa/melpa/")))