Yes, that's a risk (biting off more than they can chew), but the LLVM folks have proven that they're in it for the long haul, even with just their previously am

Yes, that's a risk (biting off more than they can chew), but the LLVM folks have proven that they're in it for the long haul, even with just their previously ambitious goals. Since this is a subproject they're not depending on (yet), it seems like a safe bet. And, if it pans out, their whole infrastructure takes a incremental leap. They seem to be winning by incremental leap after leap, so more power to them. The risk of untaken paths atrophying is always real, but, since this is OSS, it's going to be the usual "anyone who cares can scratch his own itch." Plus, they do have a lot of diverse (academic and commercial) projects depending on them, pushing them in various directions, so it's not likely that they'll become laser-focused on Mac/Linux. (Enough armchair quarterbacking. ;-)