fbp is open to contributions however the process and the methodology for contributing is a lot less solidified then the process for f_scripts. The reason for this is that fbp I consider more experimental, work-in-progress / alpha-quality software.
So what's the state of things from the high-level?
If you have an idea please reach out via ML, tickets, or IRC. Patches can be sent to the framebufferphone mailing list.
apk add build-base linx-headers freetype-dev