PTXdist is a user-friendly Linux distribution build tool for creating embedded Linux systems with a simple configuration interface. While it starts off simple, PTXdist offers in-depth customization options for packages and system configurations. The Documentation is a helpful starting point, and the DistroKit is available for common platforms like BeagleBone and Raspberry Pi. The Barebox bootloader is easy to use and supports a wide range of platforms. Additionally, image updates are made simple and secure with the RAUC update tool. Overall, PTXdist makes building and customizing embedded Linux systems a breeze.
https://www.ptxdist.org/