# Adding Mac App Store Apps File: `config/nix/packages/app-store.nix` → `masApps` attribute Add the app name (as it appears in `/Applications`) and its App Store ID: ```nix masApps = { "Final Cut Pro" = 424389933; }; ``` Find the ID from the app URL (`https://apps.apple.com/app/idXXXXXXXXX`) or with `mas search `. Apps are only installed if missing from `/Applications` (no slow reinstalls on every update). Run `rebuild` after changes.