Don't try to replace self in a macro expansion since it's unlikely to be the desired behavior. A more explicit means of specifying what variables should be replaced in a quote expression is needed.

{
	_none <- #{
		value:none <- :ifval :ifnone {
			ifnone:
		}
	}
	#{
		value <- :v {
			#{
				value:none <- :ifval :ifnone {
					ifval: v
				}
			}
		}
		none <- { _none }
	}
}