Why doesn't this chain of ndslices work?

[9il via Digitalmars-d-learn]

On Saturday, 14 May 2016 at 21:59:48 UTC, Stiff wrote:
> Here's the code that doesn't compile:
>
> import std.stdio, std.experimental.ndslice, std.range, 
> std.algorithm;
>
> [...]

Coming soon 
https://github.com/libmir/mir/issues/213#issuecomment-219271447 
--Ilya