* Linux

https://gitlab.freedesktop.org/monado/monado.git

run monado.git/build/src/xrt/targets/service/monado-service

export XR_RUNTIME_JSON=monado.git/build/openxr_monado-dev.json

* Oculus

https://developer.android.com/ndk/downloads
https://developer.oculus.com/downloads/package/oculus-openxr-mobile-sdk/

export ANDROOT=cmdline-tools
export NDKROOT=android-ndk-r23b
export OVRANDROOT=ovr_openxr_mobile_sdk
