Greenplum Database Homebrew Taps
This Greenplum Database distribution is intended for basic evaluation and testing on Mac OS systems. It is not officially supported by Pivotal, and it is not intended for production use.
You can either add tap to your Brew and then install the formula:
brew tap greenplum-db/tap brew install greenplum-db
Or, you can just do:
brew install greenplum-db/tap/greenplum-db