This is great! I’d like to use Buildroot to create my own slimmed down version of an app running on the Raspberry Pi. The goal is to boot into the app in under 5 seconds. The app would be a GUI app (Qt5). I’m looking at stripping away all unnecessary services (e.g. Wifi, Bluetooth, etc.) to achieve this goal. I know that others have done this (see furkantokac.com, IronOxider/instant-pi on Github, etc.).
Developing using Buildroot on actual Raspberry Pi hardware with an actual SD card is painful. This would relieve a lot of stress.
Have you tried Buildroot, Yocto project, or any other customization tool for the Raspberry Pi (and actually other hardware as well)?
Great stuff keep it up.