The section in question: https://github.com/kayyagari/ballista?tab=readme-ov-file#compiling, part "You should generally follow the Tauri Getting started guide: https://tauri.app/v1/guides/getting-started/prerequisites".
At least on Ubuntu 24.04 the installing prereqs of Tauri v1 fail. For example libwebkit2gtk-4.0-dev could not be found. But Ballista can be built using the Tauri's prereq guide of the current version (https://tauri.app/start/prerequisites/)