Function nu_cli::evaluate_repl

pub fn evaluate_repl(
    engine_state: &mut EngineState,
    stack: Stack,
    nushell_path: &str,
    prerun_command: Option<Spanned<String>>,
    load_std_lib: Option<Spanned<String>>,
    entire_start_time: Instant
) -> Result<()>

The main REPL loop, including spinning up the prompt itself.