anchor.diff:      fi
     '';
   
  -  nativeBuildInputs = [ makeWrapper installShellFiles buildPackages.lua ];
  +  nativeBuildInputs = [ makeWrapper installShellFiles ];
   
     buildInputs = [ lua curl which ];
   
  
positive.code: {lib, stdenv, fetchFromGitHub
  , buildPackages
  , curl, makeWrapper, which, unzip
  , lua
  # for 'luarocks pack'
  
negative.code:     installShellCompletion --cmd luarocks --zsh <($out/bin/luarocks completion zsh)
    '';
  
    propagatedBuildInputs = [ zip unzip cmake ];
  
    # unpack hook for src.rock and rockspec files
    setupHook = ./setup-hook.sh;
  