
Checking for `HOMEBREW_NO_INSTALL_CLEANUP` was added in #18825, but this breaks developers by switching them to the stable branch. Setting `HOMEBREW_NO_UPDATE_CLEANUP` when `HOMEBREW_NO_INSTALL_CLEANUP` is set seems like a relatively recent addition, so I don't think it hurts to just remove it. We can add it back (correctly) if there are users that need it.
Library
This directory contains all the code run by the official brew
command in Homebrew
and all formulae (package descriptions) in taps (repositories containing formulae) in Taps
subdirectories.