In 2004 I installed Core GNU/Linux, a small project by Josh Devan, originally hosted on SourceForge as coredistro. After requesting copyright access from Josh to CorePKG, he kindly released it under the GPL, "all versions" he said, so I uploaded CorePKG to sv.gnu.org under GPL 1, changed it to GPLv2+, and thus by doing so fulfilled my obligation to Josh.
Core is designed and constructed around one simple philosophy: to be the absolute minimum of what is required for a Linux operating system. Core is designed to be the basis for a larger, more complete operating system constructed by the end user. It contains only what is necessary to boot into Linux and download, compile, and install other software packages.
This page is dedicated to my use of Core and my various attempts over the years to upgrade it.
These instructions are incomplete, but should be sufficient:
install_core[mount point of hard drive]'
/pkgs/optionalcan be installed with
/usr/src/of the installed system
chroot [mount point] bash -lto chroot into the new system