anchor.diff: -{ stdenv, lib, makeWrapper, coreutils, nix-prefetch-git, fetchurl, nodejs-slim, prefetch-yarn-deps, cacert, callPackage }:
  +{ stdenv, lib, makeWrapper, coreutils, nix-prefetch-git, fetchurl, nodejs-slim, prefetch-yarn-deps, cacert, callPackage, nix }:
   
   let
     yarnpkg-lockfile-tar = fetchurl {
  
positive.code:     dontUnpack = true;
  
      nativeBuildInputs = [ makeWrapper ];
      buildInputs = [ coreutils nix-prefetch-git nodejs-slim ];
  
      buildPhase = ''
        runHook preBuild
  
negative.code:       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 nix ]}
  
        runHook postInstall
      '';
  