This project aims to bring syntax highlight support for GN (BUILD.gn) in Xcode.
Warning: This package works with Xcode 15.4 (at the moment of writing). This is not guaranteed to stay compatible with future versions of Xcode.
Close Xcode (secondary-click + quit). Run ./install.sh in the terminal. Reopen Xcode - if asked by a system alert, accept to load the code bundle.
Delete the previously created files at ~/Library/Developer/Xcode/Plug-ins and ~/Library/Developer/Xcode/Specifications