it’s actually not that far off a chroot, it uses LXC, the really cool thing thats going on is this wayland integration, I was waiting for termux-gui + wlroots to come along, but this might just land first
However, it also uses halium and libhybris. That means you can’t just install your favourite distro and upstream tools. Everything that needs GPU acceleration needs to be patched for libhybris. For example, that means no upstream wlroots - and the latest patched version I think is 0.12 or so.