>How can Apple be shipping it (?) when LLVM is an open source project and it's not in the SVN head yet? Apple ships their own proprietary forked version of Cla

>How can Apple be shipping it (?) when LLVM is an open source project and it's not in the SVN head yet? Apple ships their own proprietary forked version of Clang+LLVM, this is for example how they implemented Swift, which was made open source long after it was introduced as part of Apple's proprietary toolchain.