Best way to disable touchpad whilst keeping options for trackpoint?

I am a relatively unfamiliar with NixOS but have been enjoying the benefits. Recently I started using NixOS on a thinkpad, and even more recently have decided to learn to use the trackpoint (this nub thing). To do this I’ve decided to disable the touchpad.

What would be a good way to disable the touchpad whilst keeping some of its options and combustibility (such as naturalScrolling, accelProfile) when using the trackpoint?