I remember in the original there was something you could type when the game was playing the starting sequence (I think it was "hidden test"?) to be able to move the ball with your cursor. I'm curious if this works in this version so I'll probably try it out later when I'm at a computer if no one else has.

edit: It does! I installed the AUR version of it that was linked in the repo README and tested it out, and typing "hidden test" during the game startup sequence lets me drag the ball