pub fn root(self) -> PathBuf {
        match self {
            Self::Root => PathBuf::from("."),
            Self::Core(path) | Self::Prover(path) | Self::ZkStackCli(path) => {
                path.parent().unwrap().into()
            }
        }
    }
Returns the path of the repository root.
core/lib/utils/src/env.rs