apple silicon m1 - ts

brew 

gem missing, LoadError (date, psych)

BigSur 의 ruby 2.6.0 삭제

$sudo rm -rf \

/Library/Ruby/Gems/2.6.0/{build_info,cache,doc,extensions,gems} \

/Library/Ruby/Gems/2.6.0/specifications/*.gemspec \

/Library/Ruby/Site

brew 3 install... but universal bundle 많지 않음

IntelliJ

Intel 종속 Emulator

JDK native 기다려야, Zulu 로 대체 가능 but 느려