deb http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-14 main
deb-src http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-14 main
deb http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-15 main
deb-src http://apt.llvm.org/kinetic/ llvm-toolchain-kinetic-15 main