I know that I could fetch the openhab-addons repository and build the mqtt binding myself, drop it into my addons folder and use that for the time being. I’d do this in the mean time but it would be nice to know if I could use snapshots with 2.5.x
snapshots are only updating bindings, Core is fixed at 2.5 so there have not been snapshots released but 2.5.2 snapshot bindings are available on Jenkins for manual installation.
Just install openhab2. When you choose the addons, they get downloaded. The addons package is just for offline servers with no Internet access, I thought.