Sorry, the failed build logs got deleted, but the compilation errors out because it could not find some wayland related function in the GTK+ library.
That sounds like the usual ABI issue when switch wayland on/off on GTK and is not something this package in particular actually needs. Hard to tell what happened without logs though.
Created attachment 884675 [details] Failed build.log for app-cdr/xfburn-0.7.0
I could reproduce this again.
From that error, it should go away if you rebuild xfce-base/libxfce4ui.
(In reply to Ionen Wolkens from comment #4) > From that error, it should go away if you rebuild xfce-base/libxfce4ui (may possibly be other libraries affected too, just going by the one I see here)
(In reply to Ionen Wolkens from comment #4) > From that error, it should go away if you rebuild xfce-base/libxfce4ui. yes. It did go away.
I don't think we can do much about it.