This is the syntax we use in the printer. It has the advantage of making the printing (and parsing) of tuple types unambiguous, even for tuples of type 0 or 1: - `(int)` could be `int` or a 1-ary tuple - `{int}` can only be a 1-ary tuple
Reported-By: Nicolás Ojeda Bär
Reported-by: Ellenor Taghayor