For some reason Calibre won’t let me do anything because “drive is full” which I assume has to do with this.
Update: I believe I “fixed” the error with Calibre by using FlatSeal to add environment variable CALIBRE_TEMP_DIR that changes the Temp directory to something else. So far that’s the only program I’ve seen give trouble.
Are you trying to install the Flatpak? The native install probably won’t work on an immutable distro.
Calibre installs fine (flatpak). I updated my post but I was able to change the temp directory which “fixed” it.