This is a homebrew tap for nostr software, such as gossip.
First install homebrew. Then add the tap:
brew tap nostorg/nostr
Finally install a <formula> or <cask> (such as gossip or lume):
brew install <formula>
To install the latest stable version:
brew install gossip
To install the latest development branch:
brew install --HEAD gossip
To install the cask (DMG/Application release build):
brew install --cask gossip
brew help, man brew or check Homebrew's documentation.