Some new Python data structure, can be afforded as APIs for new ways of configuration. It's a subproject of uLFS. uLFS means "Your Manageable, Automatable and Templated Reusable Linux From Scratch", it's a set of tools to build your own customed Linux distribution with more managability than raw LFS(Linux From Scratch). Include source package manager, file system backup and realtime mirror apps, and some assistant data structure such as Tree writen in Python, etc...