That means older items with newer versions in the Player’s Handbook (2024) will no longer need to be recreated as homebrew content to be functional on D&D Beyond. That should save everyone ...
Homebrew (on macOS or Linux) for installing dependencies. Homebrew Cask is optional and used for installing Mac applications. mas-cli is optional and used for installing Mac App Store applications.
That last part is critical to understanding why some D&D players (including my own dungeon ... But doing so requires using the game’s homebrew rules. which aren’t known for being user-friendly.