anchor.diff:  
     meta = {
       description = "Purely-functional configuration language that helps you define JSON data";
  -    maintainers = [ lib.maintainers.benley ];
  +    maintainers = with lib.maintainers; [ benley copumpkin ];
       license = lib.licenses.asl20;
       homepage = https://github.com/google/jsonnet;
       platforms = lib.platforms.unix;
  
positive.code: { stdenv, lib, fetchFromGitHub, emscripten }:
  
  let version = "0.8.7"; in
  
  stdenv.mkDerivation {
    name = "jsonnet-${version}";
  
negative.code:     rev = "v${version}";
      owner = "google";
      repo = "jsonnet";
      sha256 = "0phk8dzby5v60r7fwd1qf4as2jdpmdmksjw3g4p3mkkr7sc81119";
    };
  
    buildInputs = [ emscripten ];
  