That project has a flake.nix and a module.nix so it should be quite easy to use: https://github.com/Gnarus-G/maccel. Do you have a more concrete question? What have you tried so far?
Can anyone help me? Im looking for a Raw Accel for macbook but im scared to try it. I dont know anythiung about how to install it and I would like to play da hood (roblox) because its supposed to make your aim better. Now, I understand what it is, and it seems easier and better but I just really dont know how to install it or anything. If you have any ideas or anything please let me know on discord @n0hv