The subject of disk space and flatpaks came up in the most recent workstation meeting, and I'd like to separately discuss that in this thread before creating a flatpak issue.
The full log:
https://meetbot.fedoraproject.org/teams/workstation/workstation.2019-10-28-1...
Excerpts:
13:16:07 <langdon> allocating enough disk if you have your drive sliced up is tough 13:16:36 <Son_Goku> and yeah, the disk space issue is a huge problem ... 13:16:47 <kalev> "the disk space issue" ? 13:16:58 <otaylor> Son_Goku: why would disk space be an issue? flatpaks store data in $HOME ... 13:17:19 <langdon> that's the problem.. normally I have a "games disk" 13:17:27 <Son_Goku> likewise
Neither sysroot nor $HOME fits the above use case, where the user wants to store games on a separate volume entirely. And another use case is where it's desirable to use the much larger /home volume storage pool, but permit sharing of apps among users.
Could there be a /home/share/flatpak with the appropriate permissions, that meets both use case requirements?
Alternatively, Workstation could do what Silverblue does, with /var/home bind mounted to /home - and therefore system and user flatpaks go on the same volume. But there should also be a way to set the default location for flatpak files. Users wanting a games volume could bind mount it to /var/lib/flatpak, but then they need a way to set system as the default location instead of users.