anchor.diff:    lua = callPackageAlias "lua5" { };
   #
   #  lua52Packages = callPackage ./lua-packages.nix { lua = lua5_2; };
  -  lua53Packages = callPackage ./lua-packages.nix { lua = lua5_3; };
  +  lua53Packages = callPackage ./lua-packages.nix {
  +    lua = callPackageAlias "lua5_3" { };
  +  };
     luaPackages = callPackageAlias "lua53Packages" { };
   #
   #  lua5_expat = callPackage ../development/interpreters/lua-5/expat.nix {};
  
positive.code: #
  #  ### LUA MODULES
  #
    lua5_sockets = luaPackages.luasocket;
  #
  #  lua5_2 = callPackage ../development/interpreters/lua-5/5.2.nix { };
  #  lua5_2_compat = callPackage ../development/interpreters/lua-5/5.2.nix {
  #    compat = true;
  
negative.code: #  };
  #
  #  doclifter = callPackage ../development/tools/misc/doclifter { };
  #
  #  dot2tex = pythonPackages.dot2tex;
  #
  