R.Launchpad is a minimal distribution for Linux that build a system-image in given disk-partition(ROOTDEV).
It doesn't include linux source but just refers to the include-files to build the system-image and uses the compiled kernel-image to boot the system-image from ROOTDEV.
It's distributed in the form of source code from which the system-image can be built on given ROOTDEV in 1~2 minutes(host-machine: Pentium4).
This software is a light-weighted x86 base-system,
aiming at kernel-testbeds for developers,