解决Homebrew下载更新极慢的问题
近期使用Homebrew去下载安装软件的时候总是卡在update阶段，时间非常久，难以忍受。记录一下解决方法，使用Homebrew安装软件的时候一直卡在Update阶段。同时发现从github.com下载文件也极度缓慢（几十KB/s）。
问题定位:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 brew update --verbose Checking if we need to fetch /usr/local/Homebrew... Checking if we need to fetch /usr/local/Homebrew/Library/Taps/caskroom/homebrew-fonts... Fetching /usr/local/Homebrew... Checking if we need to fetch /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask... Checking if we need to fetch /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core... Fetching /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask... Fetching /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core... remote: Enumerating objects: 337, done. remote: Counting objects: 100% (337/337), done. remote: Compressing objects: 100% (88/88), done. remote: Total 298 (delta 221), reused 287 (delta 210), pack-reused 0 Receiving objects: 100% (298/298), 50.91 KiB | 39.00 KiB/s, done. Resolving deltas: 100% (221/221), completed with 39 local objects. From https://github.com/Homebrew/homebrew-core 65a45a9..583b7f1 master -> origin/master remote: Enumerating objects: 179429, done. remote: Counting objects: 100% (179429/179429), done. remote: Compressing objects: 100% (56607/56607), done. Receiving objects: 4% (7628/177189), 1.48 MiB | 8.00 KiB/s
解决问题:使用代理访问github.com ;
使用以下命令更换国内中科大上的homebrew镜像：
1 2 3 4 5 6 7 8 9 # 替换brew.git: cd "$(brew --repo)" git remote set-url origin https://mirrors.ustc.edu.cn/brew.git # 替换homebrew-core.git: cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core" git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git # 替换homebrew-bottles: echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.ustc.edu.cn/homebrew-bottles' >> ~/.zshrc source ~/.zshrc
使用以下命令更换国内阿里云上的homebrew镜像：
1 2 3 4 5 6 7 8 9 # 替换brew.git: cd "$(brew --repo)" git remote set-url origin https://mirrors.aliyun.com/homebrew/brew.git # 替换homebrew-core.git: cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core" git remote set-url origin https://mirrors.aliyun.com/homebrew/homebrew-core.git # 替换homebrew-bottles: echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.aliyun.com/homebrew/homebrew-bottles' >> ~/.zshrc source ~/.zshrc
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 # 替换后，问题依旧，继续查看日志： brew update --verbose Checking if we need to fetch /usr/local/Homebrew... Checking if we need to fetch /usr/local/Homebrew/Library/Taps/caskroom/homebrew-fonts... Fetching /usr/local/Homebrew... Checking if we need to fetch /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask... Checking if we need to fetch /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core... Fetching /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core... From https://mirrors.aliyun.com/homebrew/homebrew-core + 583b7f1...8435590 master -> origin/master (forced update) Fetching /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask... Fetching /usr/local/Homebrew/Library/Taps/caskroom/homebrew-fonts... remote: Enumerating objects: 179429, done. remote: Counting objects: 100% (179429/179429), done. remote: Compressing objects: 100% (56607/56607), done. Receiving objects: 6% (11170/177189), 2.16 MiB | 30.00 KiB/s
可以看到由于homebrew-cask的仓库依然指向了Github，这个过程还是慢。阿里云的镜像站没有提供homebrew-cask，进一步搜索找到USTC镜像站，该站提供了homebrew-cask的源。使用上述同样的命令更换源：
1 2 3 # 替换homebrew-cask.git: cd "$(brew --repo)"/Library/Taps/homebrew/homebrew-cask git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git
Note: Homebrew Bottles源的更换方法详见这里:https://github.com/Homebrew/brew.git https://github.com/Homebrew/homebrew-core.git https://github.com/Homebrew/homebrew-cask
PS: 最近阿里的Homebrew源经常会出现404问题，最后只能去官方获取源码编译安装，这种方式非常耗时也没有必要
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解决问题:
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