Link to source: https://github.com/EVV1E/waylandcraft
I love it.
There's a big difference between something being compiled to run inside of Minecraft, versus running a sidecar that streams back a display. It's the difference between compiling and running on your machine, and streaming back a cloud machine using RDP.
Not like this makes a difference to users, who don't know how any of this works. But we are on Hacker News...
Jokes aside, I've grown to love "XYZ in Minecraft". It's like a newer (still 2011 was a long time ago!) version of "Doom on XYZ".