The nautilus context menu actions integration from file-roller is not showing up in nautilus 3.18.5 when installing 3.26.1 version of the port, but works with 3.20.3. My installation of nautilus was part of Gnome3-lite. My initial setup was with 3.26.1 and I tried installing 3.20.3 with portdowngrade which provided the integration. I tried multiple time installing/uninstalling both versions and the issue is reproducible all the time.
With the update of GNOME to 3.28, this works again.