Fiber gets the LaTeX editing & in-editor preview done, but without the 7GB+ bloat of TeX live.
Please make sure harfbuzz and icu4c dynamic dependencies are installed on your system! You may have to ensure cargo recognizes these paths with environment variables (particularly with macOS & homebrew).
Simply run
cargo b --release
to find the program under target/release/fiber. Packaging options for macOS are available with cargo package.