Yikes.

This is not well-written Rust; code like the below actually defeats the purpose of using Rust, and without any specific reason for doing so.

I personally discourage people from using this software.

    static mut KEYBOARD_HOOKED: bool = false;

    fn start_keyboard_hook(&self) {
        if unsafe { KEYBOARD_HOOKED } {
            return;
        }
    }

The build even requires an assembler (NASM), which is odd, in this context.