Google ARCore SDK: Still supported?

Is it still possible to use the Google ARCore SDK within Unity? When I try to build with it imported, it says "ARCore SDK support is disabled. To use ARCore SDK for Unity on Android, 'XR Settings > ARCore Supported' must be enabled." However, when enabling ARCore under XR Plug-in Management, Unity automatically installs the ARCore package, which then conflicts with the SDK.

My goal is to get the face tracking from the ARCore SDK on iOS. If it's possible to either use the SDK directly, or to get the functionality from the Unity ARCore package, I'd love to know.