Support discoverable disk images (DDI)
One thing we discussed at the GNOME OS hackfest is the possibility of phasing out the iso image, and only using the raw image at https://os.gnome.org/download/latest/disk.img.xz
I've opened #860 (closed) to deal with a regression preventing loading of raw images, which should allow Boxes to be able to use this image as-is. But I would like to take this a step further and have Boxes support discoverable disk images (DDI), recognizing which OS it is automatically. There is no formal specification yet, but the idea is described in this blog post: http://0pointer.net/blog/the-wondrous-world-of-discoverable-gpt-disk-images.html