anchor.diff:        mkdir -p $out/bin
         cp -r libexec $out
         makeWrapper $out/libexec/index.js $out/bin/prefetch-yarn-deps \
  -        --prefix PATH : ${lib.makeBinPath [ coreutils nix-prefetch-git ]}
  +        --prefix PATH : ${lib.makeBinPath [ coreutils nix-prefetch-git nix ]}
   
         runHook postInstall
       '';
  
positive.code: { stdenv, lib, makeWrapper, coreutils, nix-prefetch-git, fetchurl, nodejs-slim, prefetch-yarn-deps, cacert, callPackage }:
  
  let
    yarnpkg-lockfile-tar = fetchurl {
  
negative.code:     dontUnpack = true;
  
      nativeBuildInputs = [ makeWrapper ];
      buildInputs = [ coreutils nix-prefetch-git nodejs-slim nix ];
  
      buildPhase = ''
        runHook preBuild
  