How to serialize/deserialize my data type with options and DateTime

[treeform]

Looking at date time more, I don't think DateTime is a good candidate for 
serializing because it contains pointers to functions that determine timezone. 
How do you want to handle the timezones? I would recommend just stocking with 
unix epoc (seconds from 1970) if you don't want to make your life x100 harder 
by dealing with timezone sterilization.

I don't usually use DateTime (I use the <https://github.com/treeform/chrono)>, 
but here is what I got:
    
    
    import times, flatty
    
    proc toFlatty(s: var string, x: DateTime) =
      s.toFlatty(x.toTime.toUnix)
    
    proc fromFlatty(s: string, i: var int, x: var DateTime) =
      var
        unix: int64
      s.fromFlatty(i, unix)
      x = parse("1970-01-01", "yyyy-MM-dd", utc()) + initTimeInterval(seconds = 
unix.int)
    
    var date = parse("2000-01-01", "yyyy-MM-dd", utc())
    echo date
    echo date.toFlatty().fromFlatty(type(date))
    assert date == date.toFlatty().fromFlatty(type(date))
    
    
    Run