anchor.diff:  
       cp taoup-fortune $out/bin
       chmod +x $out/bin/taoup-fortune
  +
  +    runHook postInstall
     '';
   
     meta = {
  
positive.code: in
  stdenv.mkDerivation rec {
    pname = "taoup";
    version = "1.1.14";
  
    src = fetchFromGitHub {
      owner = "globalcitizen";
      repo = pname;
      rev = "v${version}";
      sha256 = "1gs6f66fg1l504riw481nvyw7cchbr3qjks4mkj2qb3s9147ad8j";
    };
  
    buildInputs = [ rubyEnv bash ncurses ];
  
negative.code:   dontBuild = true;
  
    installPhase = ''
      runHook preInstall
  
      mkdir -p $out/{bin,lib/taoup}
  
      cp taoup $out/lib/taoup
  