[Sangeppato]

I'm not 100% sure about Homebrew, but Scoop uses the "portable" installers every time it's possible, trying to put all the files in a well defined position, controlled by Scoop itself. I think that Homebrew (not Cask) does a very similar thing. What this Windows package manager does is running classical installers and there's absolutely no way to know exactly what the installer is going to do. Homebrew Cask follows a similar approach, but thanks to how .app and .pkg work it's actually possible to manage the uninstallation quite well