I've created a qemu disk image with Bryan's original files:

https://drive.google.com/open?id=1_HcBJ3_qimbY6C4_gppOG57-UeGzuyJO

To use it invoke:

$ qemu-system-x86_64 -hda a.img -kernel mnt/gnu/store/b27wjlld5105cq56vvxfywk88x5hxsba-system/kernel/bzImage -initrd ../initrd -serial stdio -m 900 -append "console=ttyS0 --load=/gnu/store/pyd52vfzxhmcdmx77mb4a5lwvl2xa6s5-boot --root=/dev/sda2 --system=/gnu/store/b27wjlld5105cq56vvxfywk88x5hxsba-system"