[NFS-Ganesha-Devel] Newbie question / help with installation

Hi , I am very new to NFS Ganesha, trying to understand how this whole setup works. So, I need setup an NFS server in CentOS 7.5 with a ZFS pool. As I read the documentation, it looks like ZFS FSal have been discontinued from NFS Ganesha source code , it is available via libzfswrap. Documentation suggests that source should be in the contrib directory, but there is no contrib directory when I clone the latest 2.6 repo. Can you please help understand where do I go about getting libzfswrap? Also, are there rpm packages for CentOS 7 for the latest 2.6 release? If there is a step by step guide on setting up an NFS server using ZFS , that would also be very helpful. Thanks