We would be glad to work further on such a C++ port with anybody who
can handle the Qt end of things so anybody interested in exploring
such an endeavor should discuss with us.
I have a friend who is totally sold on LLVM, but I note that it isitself written in C++, so bootstrapping would be difficult (I think Istill have a running version of GCC 3.0,
Speaking with their developers a few years ago they did not think it was a good idea/reasonably feasible.
I may be biased, but still sure some general flavor of Comeau for Plan 9 could be a near term and not expensive endeavor (though it depends upon ones definition of inexpensive too I guess). And Qt definitely has its place in the world.