I haven't used C++ recently, and never in truly large projects, but what I do remember is that that "build your code so that dependencies are simple" is not something you get for free, certainly not with C++.
I also think that Apple wants every compilation speed improvement it can find, so that it can improve syntax coloring and error highlighting in (almost) real time while you are editing.
Finally, I don't think this really is a proposal. Apple shows its intent earlier than they did with WebKit, but read that last slide: "clang implementation underway".
I expect they will listen to feedback and change this if people propose real improvements, but I think it is a given that this will be in clang soon, and also that it will be used in clang, LLVM, and WebKit. From there, chances are it will spread, either via tools that use WebKit or LLVM, or because of superior compilation speed.
How soon that 'soon' will be, I don't know. Implementation may not be as simple as it looks.
I also think that Apple wants every compilation speed improvement it can find, so that it can improve syntax coloring and error highlighting in (almost) real time while you are editing.
Finally, I don't think this really is a proposal. Apple shows its intent earlier than they did with WebKit, but read that last slide: "clang implementation underway".
I expect they will listen to feedback and change this if people propose real improvements, but I think it is a given that this will be in clang soon, and also that it will be used in clang, LLVM, and WebKit. From there, chances are it will spread, either via tools that use WebKit or LLVM, or because of superior compilation speed.
How soon that 'soon' will be, I don't know. Implementation may not be as simple as it looks.