Don't quote me on this, but there have been ideas being thrown around about packaging the possible Jolla binary components for N9/50 users who want to use Sailfish.

One of them being the "ubuntu-restricted-extras"/Debian non-free archive approach, where the repository for Jolla binaries components is added, and the packages are installed (at the user's choice, and not pre-packaged into the flashable image).

This approach is comparable to the "GAPPS" package used in certain custom Android ROMs.