anchor.diff:  };
   luv = buildLuarocksPackage {
     pname = "luv";
  -  version = "1.27.0-0";
  -
  -  src = fetchurl {
  -    url    = https://luarocks.org/luv-1.27.0-0.src.rock;
  -    sha256 = "16csnnypi2m71ncr8qwc9drqbrb40l5li1nk7zpsxnslg5fiax6x";
  +  version = "1.28.0-1";
  +
  +  src = fetchurl {
  +    url    = https://luarocks.org/luv-1.28.0-1.src.rock;
  +    sha256 = "15m946p982bk4apig7yf07jm25ck26v2qxcvnrfh60vrbaw6gihw";
     };
     disabled = ( luaOlder "5.1" );
     propagatedBuildInputs = [ lua ];
  
positive.code:   version = "2.0-1";
  
    src = fetchurl {
        url    = https://luarocks.org/lua-toml-2.0-1.src.rock;
        sha256 = "0lyqlnydqbplq82brw9ipqy9gijin6hj1wc46plz994pg4i2c74m";
    };
    disabled = ( luaOlder "5.1");
    propagatedBuildInputs = [ lua ];  
    buildType = "builtin";
  
    meta = {
      homepage = "https://github.com/jonstoler/lua-toml";
      description="toml decoder/encoder for Lua";
      license = {
        fullName = "MIT";
      };
  
negative.code:   version = "0.5.1-2";
  
    src = fetchurl {
      url    = https://luarocks.org/lua-messagepack-0.5.1-2.src.rock;
      sha256 = "0bsdzdd24p9z3j4z1avw7qaqx87baa1pm58v275pw4h6n72z492g";
    };
    disabled = ( luaOlder "5.1" );
    propagatedBuildInputs = [ lua ];
    buildType = "builtin";
  
    meta = {
      homepage = "http://fperrad.frama.io/lua-MessagePack/";
      description = "a pure Lua implementation of the MessagePack serialization format";
      license = {
        fullName = "MIT/X11";
      };
  