anchor.diff:      license = "nethack";
       platforms = platforms.all;
       maintainers = with maintainers; [ abbradar ];
  -  }; 
  +  };
   }
  
positive.code:                    ];
  
    makeFlags = [ "GAMEPERM=744" ];
  
    enableParallelBuilding = true;
  
  
negative.code: { stdenv, fetchFromGitHub, fetchpatch, utillinux, ncurses, flex, bison }:
  
  stdenv.mkDerivation rec {
    pname = "unnethack";
    version = "5.3.2";
  
    src = fetchFromGitHub {
      name = "UnNetHack";
      owner = "UnNetHack";
      repo = "UnNetHack";
      rev = version;
      sha256 = "1rg0mqyplgn3dfh3wz09a600qxk7aidqw4d84kyiincljvhyb7ps";
    };
  
    buildInputs = [ ncurses ];
  