Many hardware vendors use Yocto as a way to provide a version of the Linux Kernel and board bring up package. This is a very Linux-from-scratch type approach that grew out of GenToo. My current work is on closing the gap between these vendors and the RPM based code management approach in Fedora etc.
This is a lot of fun.
Our code repository is on gitlab.
I’ll be posting some of the more interesting things that I learn while working on this.