Here’s the Twitter thread discussing this
Basically, some different apps were linked to the official steamVR app. These apps are hidden, but the data miner was able to grab some assets from them that included some custom art for Waydroid, which is a Linux program that lets you run Android apps on Linux.
Additionally, I’ve seen comments saying that some valve devs have been making pull requests for the Waydroid github, but I don’t actually have a proper source for that.
I can get it running on my laptop running a Debian based distro but for whatever reason I was having trouble with the whole thing where you have to use ADB to get the device code to register your device with go*gle services. Otherwise it works just fine.