发现确实没有7.0版本
将现在的7.2降级
cd $(brew –prefix)/Library/Taps/homebrew/homebrew-core/Formula
即 cd /opt/homebrew/Library/Taps/homebrew/homebrew-core/Formula
git log –follow icu4c.rb
git checkout -b icu4c-70.1 aa997d1c221d249325e56c238acb90ef7b4e0fc9
brew reinstall ./icu4c.rb
原文链接: https://dashen.tech/2022/01/29/brew降低icu4c版本/
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