有时候，brew list icu4c 已经找不到老版本的包了。我们可以这样安装：
brew reinstall https://raw.githubusercontent.com/Homebrew/homebrew-core/e7f0f10dc63b1dc1061d475f1a61d01b70ef2cb7/Formula/icu4c.rb
这个是相应的commit记录 e7f0f10dc63b1dc1061d475f1a61d01b70ef2cb7
brew reinstall https://raw.githubusercontent.com/Homebrew/homebrew-core/74940e7b486356e3a6913b2c9d6886997db9bdb0/Formula/thrift.rb