Alternative Flatpak Work-around

[46cv8]

prusa3d/PrusaSlicer#13376 (comment)

Hello @johnolinda, you should be able to achieve what you want by running slicer like this:

flatpak run --talk-name=org.freedesktop.Flatpak com.prusa3d.PrusaSlicer

and in the Post processing scripts window:

flatpak-spawn --host dostuff

where dostuff is what you had there previously.

prusa3d/PrusaSlicer#13376 (comment)

OK, just for documentation's sake, here's what I did (using Flatseal) to make this work normally through the GUI. First, I enabled the Socket > D-Bus session bus setting, then added /tmp to Filesystem > Other files. Then I reconfigured the script command with flatpak-spawn --host as recommended and everything appears to work normally now. I'll test the Flatpak and report back if I notice further issues.

[46cv8]

This has stopped working for me after some recent update to ubuntu / prusaslicer. It now gives an error as follows.

Portal call failed: Failed to start command: Failed to execute child process "flatpak-spawn" (No such file or directory)

I expect it may be an easy fix or some change to the default security for flatpak that is blocking flatpak-spawn, but due to the recency of the change causing this issue I can't find anything about how to work around it yet online.