Last night, r³ saw, as a world première, the first boot of the first computer running pure Debian with ZFS-on-Linux.
There definitely were some before, using third-party packages (including my other laptop), by this is an important step for native ZFS support in Debian.
I will probably be involved, in the coming weeks, in squashing ZFS bugs and making sure that Debian Stretch users get a smooth ZFS experience.
Don’t hesitate to drop by and ask questions if you are curious about ZFS, or borrow the ZFS books I added to the library ;-)
The whole install is described here and on a post to the pkg-zfsonlinux-devel mailing-list.