1deb http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-14 main 2deb-src http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-14 main 3deb http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-15 main 4deb-src http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-15 main 5