Problem

brew bundle uses mas install for Mac App Store entries in the Brewfile. However, mas install only works for apps previously associated with the Apple Account — it fails with:

Error: Redownload Unavailable with this Apple Account

This affects even universally free apps like Keynote, Numbers, and Pages on fresh Apple Accounts that have never downloaded them.

Current mas CLI behavior

• mas get (alias: mas purchase) — acquires and installs apps, works on fresh accounts
• mas install — only re-downloads previously acquired apps

From mas help:

get, purchase    Get & install free apps from the App Store
install          Install previously gotten apps from the App Store

Proposed change

Change mac_app_store_installer.rb to use mas get instead of mas install for initial installs. This would make Brewfiles work on fresh machines/accounts without requiring users to manually pre-install each app.

A possible approach:

1. Try mas install first (fast path for already-associated apps)
2. Fall back to mas get if install fails with the redownload error

Or simply always use mas get which handles both cases.

Use case

Using a Brewfile to set up a new Mac for someone. All masApps fail because they were never previously downloaded on that Apple Account. The workaround is to manually run mas get <id> for each app before brew bundle, which defeats the purpose of automated setup.

Relevant code

https://github.com/Homebrew/brew/blob/master/Library/Homebrew/bundle/mac_app_store_installer.rb