To anyone who cares, I just released an update to the SDF SDK Homebrew package for Mac that installs the latest 19.1.0 release. Because of changes to how Brew works, they are no longer keeping old versions of packages. So you used to be able to “switch” between versions after upgrading. To combat this, you will need to install older versions separately. So

brew install sdfsdk@18.2.0

and

brew install sdfsdk@18.2.1

for the most recent older versions. Upgrading is the normal

brew upgrade sdfsdk

. Each of these packages come with an “sdk switcher” app that is easy to use. Just type

sdfsdk 18.2.0

to switch to that version. To switch back to the latest, just type

sdfsdk

. The update also keeps your keyfile in a central place, so it doesn’t get reset after each update. For more information, check out the repo: https://github.com/limebox/homebrew-netsuite