MaintenanceTool needs a lot of space in /tmp to upgrade a lot of packages

This seems inevitable: where else to put temp files if not in /tmp. It conflicts with the common practice on various distros of using tmpfs to make /tmp into a ramdisk (which is done because there are too many small, ephemeral temp files, and we don't want to wear out our SSDs prematurely by constantly writing there). That causes problems in various contexts occasionally, including this one. Maybe tmpfs should be redesigned to store the small ephemeral files in RAM, but also be able to write larger files to disk when the space gets too constrained.

Anyway for now, it ends up being unreasonable for the installer to download, say, 8GB of files there. I guess I have to reboot without tmpfs temporarily in order to upgrade Qt? Or figure out how to increase its size? Or manually install packages in smaller groups? Well, maybe the installer could do that: download and install a few files at a time in parallel, instead of downloading everything first.