I'm a fan of HMD programming in general so I love this project. But it should be noted that AOSP-based XR headsets can run pseudo Linux environments via termux + X: https://www.reddit.com/r/cyberDeck/comments/fc5sfr/oculus_qu...
Also if anyone is looking for a full-sized portable keyboard, I suggest https://www.protoarc.com/products/xk01-tri-fold-bluetooth-ke... which is my primary keyboard when I'm working remotely on my tablet. It is "pocket-sized" for certain definitions of "pocket".