deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu zesty main deb-src http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu zesty main deb http://apt.llvm.org/zesty/ llvm-toolchain-zesty main deb-src http://apt.llvm.org/zesty/ llvm-toolchain-zesty main deb http://apt.llvm.org/zesty/ llvm-toolchain-zesty-3.9 main deb-src http://apt.llvm.org/zesty/ llvm-toolchain-zesty-3.9 main deb http://apt.llvm.org/zesty/ llvm-toolchain-zesty-4.0 main deb-src http://apt.llvm.org/zesty/ llvm-toolchain-zesty-4.0 main