anchor.diff:            ''
               ln -s "$out"/bin/luajit-* "$out"/bin/luajit
             '';
  -
  -      meta = with stdenv.lib; {
  -        description = "High-performance JIT compiler for Lua 5.1";
  -        homepage    = http://luajit.org;
  -        license     = licenses.mit;
  -        platforms   = platforms.linux ++ platforms.darwin;
  -        maintainers = with maintainers ; [ thoughtpolice smironov vcunat ];
  -      };
       };
   }
  
positive.code:     sha256 = "1hyrhpkwjqsv54hnnx4cl8vk44h9d6c9w0fz1jfjz00w255y7lhs";
    };
  
  
    generic =
      { version, sha256 ? null, isStable
  
negative.code:     }:
  
      stdenv.mkDerivation rec {
        inherit name version src meta;
  
        luaversion = "5.1";
  
  