I should’ve made this more clear in the Xfce 4.8 release announcement but for a moment there I forgot that not everyone knows what we developers are dealing with under the hood.
Many users have been asking what the BSD problems are that I mentioned in the announcement. As some of you may recall is that HAL, the hardware abstraction layer that has for the past few years been used for volume and power management as well as a few other things, has been deprecated and replaced by a variety of frameworks. Today there is udev for device information, udisks for volume management, upower for power management as well as ConsoleKit and PolicyKit for session and permission control.
At least udev is strongly linked to Linux and as far as I know is not available on any of the BSD flavors. Unfortunately it is now the only good way to detect storage devices, cameras, printers, scanners and other devices using a single framework. That’s why we use it in Xfce now in situations where HAL provided us with device capabilities and information to distinguish between the different device types before. The consequence is that thunar-volman no longer works without udev and thus only compiles on Linux. In Thunar itself udev remains optional.
I don’t know what the porting status of the other frameworks is. But I am pretty sure not all of them have been ported to other platforms yet which is why I felt the need to express our disappointment in the announcement. For 2-3 years now all this has been a big mess. New frameworks were invented, dropped again, renamed from *Kit to u* and somewhere on the way it became impossible to keep Xfce as portable as it was before. I know that this is nothing new and that BSD folks faced the same situation as they do now back when HAL was invented but I don’t think it has to be this way.
For the question how we can improve the situation I have no answer yet.