Andreas, I've not gotten it more isolated, the minimum I had was running debian/tests/gnome-desktop-testing in a flatpak-builder source tree (apt source/pull-lp-source flatpak-builder).
Andreas, I've not gotten it more isolated, the minimum I had was running debian/ tests/gnome- desktop- testing in a flatpak-builder source tree (apt source/ pull-lp- source flatpak-builder).