123dda09f0
Quarantine is available ONLY if the script exits with '2'. It is definitely NOT available if Swift doesn't exist or if it exits with '5' (incompatible SDK). All other cases are from now on treated as unsupported. Also print to standard error only when explictly required (via an exception).
Library
This directory contains all the code run by the official brew and brew cask commands in Homebrew and all formulae (package descriptions) in taps (repositories containing formulae) in Taps subdirectories.