Stance (or discussion) on src/ directory (original) (raw)

Is there an official stance on the "src/" directory thing? I'm all for it (and @hynek seems to agree) but I haven't found any discussion or explanation about it from the PyPA. The guide doesn't mention it and the sample project doesn't use it. Even if the stance is "don't use it" (which I would disagree with) then I'd love to see this discussed in the official guide so we can refer to it when people need to make up their mind or argue it.