For what it's worth, Anbox is already in the ascii-backports repos which are compatible with Maemo Leste. Bar some PVR video driver issues, we're close to getting it running in Leste. If it turns out that the mainline A5xx Freedreno driver is in a good state (mainline Freedreno is in a much better state than PVR), Anbox should just work out-of-the-box.