KaarPux

http://linux.softpedia.com/get/System/Operating-Systems/Linux-Distributions/KaarPux-92892.shtml#download

KaarPux is an open source DIY (Do It Yourself) distribution of Linux built from scratch, where everything must be compiled from source. It is designed specifically for advanced Linux users who like to be in control of the build process of the distribution.

It’s distributed as a source archive

It is a Linux kernel-based operating system that is not based on any existing distribution of Linux, though it is somewhat inspired by other source-based GNU/Linux OSes, such as Gentoo. It’s distributed as a source archive, which contains the necessary tools to built the system from