Overlay Of Gentoo ebuilds Required to Run A System with a Static /dev
As the ebuilds here are all derived works the licence(s) are as per the original. That's mostly GPL-2 but do check.
By default, the olde-gentoo USE flag is used to control the dependencies for a static build. To get the static behavior set USE=-udev olde-gentoo in make.conf
In other cases, the edits are more invasive. If it matters to you, read the ebuild code.
These ebuilds mostly build for me. As you may expect, various functionalty is missing, mostly by design. There are a few things WIP, cavat emptor.
As always, its your Gentoo your way. When it breaks you can keep all the pieces.