As of 2019-02-22 this 404s
suckless distro, doesn't have kernel/bootloader instructions, probably too technical, probably without other applications / they would need compiling
The developer is at www.sta.li
See Super Grub2 Disk
2019-02-22 - Still in beta
GuixSD is an advanced distribution of the GNU operating system developed by the GNU Project.
This looks interesting but I haven't tried it. This is definitely something I'll keep on my radar.