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this post was submitted on 30 Sep 2024
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The safest method, if your /home has enough space, is to use it instead of /var for (some) Flatpak installs. You can force any Flatpak install to go to /home by adding
--userto the command.If you look at the output of
flatpak listit will tell you which package is installed in user home dir and which in system (/var). You can also show the size of each package withflatpak list --columns=name,application,version,size,installation.I don't think you can move installed apps directly between system/user like Steam can (Flatpak is REALLY overdue for a good package manager) but you can uninstall apps from system, then run
flatpak remove --unused, then install them again with--user.Please note that apps installed with
--userare only seen by the user that installed them. Also you'll have to cleanup separately for system and user(s) in the future (flatpak remove --unusedfor system, thenflatpak remove --unused --userfor each user).First you have to make a new --user remote. Then you can list your current stuff and install it on the --user side one package at a time, (with --no-pull so it sucks the existing install). Then, you delete the --system copy of packages.
Great trick, I had no idea Flatpak can use an existing install as a repo!