The Linux Terminal app is finally working in Android 15 QPR2 Beta 2!

As I first reported, this is an all-in-one app that downloads, configures, runs, and interfaces with an instance of Debian running a virtual machine. It uses the Android Virtualization Framework APIs that Google introduced in Android 13 but updated in Android 15.

Right now, there's not much you can do with this since hardware acceleration support and support for running graphical environments is missing, but both of these things are being worked on.