Unable to rebind keyboard device in vm-display-fbdev (FrameBuffer)

[KenDickey]

With libevdev, mouse and keyboard are bound to devices in /dev/input with names like "event0" and "event1".
Different keyboard/mouse hw binds to different numbers, so it is important to allow overrides via shell variables.
E.g.
SQUEAK_MSDEV=/dev/input/event1
SQUEAK_KBDEV=/dev/input/event0
vs
SQUEAK_MSDEV=/dev/input/event0
SQUEAK_KBDEV=/dev/input/event1

Mouse rebinding works, but not keyboard rebinding.

[KenDickey]

Using evtest I was able to determine device mapping
/dev/input/event0 -> menu-keys
event1 -> audio jack
event2 -> track pad
event3 -> mouse
event4 -> keyboard (raw keystrokes)
event5 -> system control (e.g. sleep)
event6 -> keyboard events (keycodes)

So binding
SQUEAK_KBDEV=/dev/input/event6
SQUEAK_MSDEV=/dev/input/event3
then the Framebuffer display works just fine