anchor.diff:      "--offline"
       "--frozen-lockfile"
       "--ignore-engines"
  -    "--ignore-scripts"
     ];
   
     mkYarnModules = {
  
positive.code:     # we import package.json from the unfiltered source
      packageJSON = ./package.json;
  
      yarnFlags = defaultYarnFlags ++ ["--production=true"];
  
      nativeBuildInputs = [ pkgs.makeWrapper ];
  
  
negative.code: 
          ${workspaceDependencyLinks}
  
          yarn install ${lib.escapeShellArgs (defaultYarnFlags ++ lib.optional ignoreScripts "--ignore-scripts" ++ yarnFlags)}
  
          ${lib.concatStringsSep "\n" postInstall}
  
  