Teardown race condition when running tests under dbus-run-session?

[xsdg]

Howdy, y'all. I'm one of the co-maintainers for Geeqie. Recently, one of the other co-maintainers has been working on adding GTK4 support, which required some modifications to how we run our functional integration tests.

We found that without xdg-desktop-portal installed, our pattern of creating a tmpdir homedir, using dbus-run-session, and then immediately doing rm -rf ${TEMP_HOMEDIR} works fine. But if xdg-desktop-portal is installed, then the teardown will reliably fail with what feels like a filesystem-based race condition. See BestImageViewer/geeqie#1532

Any thoughts on what might be happening, or why the installation of xdg-desktop-portal might be affecting things? My expectation would be that after dbus-run-session exits, nothing else should be touching the XDG directories.

[swick]

dbus-run-session going away doesn't necessarily mean that everything else has been terminated. It might make sense to try to figure out what remains and why.