MeeGo is RPM based and well, Diablo isn't.
I suppose you mean Qt - the issue is that you can compile the ’base’ Qt, but we don’t have the necessary patches to utilize hardware acceleration and system integration. In other words, it would sort-of work, but it would be slow and feel very much out of place (it would be worse than Qt4.5 on Diablo as is, would feel more like you’re in Easy Debian or sorts).