The Meta Unity SDKs do not support Linux, causing errors when trying to run projects on Linux-based systems like CachyOS. Specifically, the SDK uses preprocessor directives (e.g., UNITY_EDITOR_OSX) for various editor platforms but does not include a directive for Linux (UNITY_EDITOR_LINUX). This omission leads to issues with the OVRManager. Furthermore, the locally cached package prevents adding the necessary directive to resolve the issue, as changes cannot be saved.