anchor.diff:      inherit (pkgInfo) name;
       dependencies = calledTemplate.nodeBuildInputs;
     };
  +  yarnFlags = stdenv.lib.escapeShellArgs [ "--offline" "--frozen-lockfile" ];
   
   in
   
  
positive.code:       --replace node_modules "${node_modules}"
    '';
  
    NODE_PATH = "${node_modules}";
  
    buildPhase = ''
      # temporary $HOME for yarn config
      export HOME=$(pwd)/yarn_home
      mkdir -p $HOME
      yarn config --offline set script-shell "${bash}/bin/bash"
  
      # binaries of deps.nix
      export PATH="${node_modules}/.bin:$PATH"
  
      # browserify won't look in NODE_PATH for modules
      ln -s ${node_modules} node_modules
      yarn run --offline build:assets
      yarn run --offline build:${target}
    '';
  
    installPhase = ''
  
negative.code: { stdenv, fetchFromGitHub, callPackage, yarn
  , production ? true }:
  
  let
  