I have a question related to this article, though not directly. If building completely from scratch turns out too cumbersome and time-consuming, what would be the easiest way of building a minimal, fast starting distro with graphical user interface and networking whose only purpose is to run one application on x86 hardware in kiosk mode? Is there a distro builder for dummies?
You can pick packages and build a distro from browser.
NixOS - You can make one config file to specify how your system should look like. It's easy to make GUI for it.