We need an internal keyword.

[Neia Neutuladh]

On Sun, 21 Oct 2018 08:40:36 +0000, Laurent Tréguier wrote:
> This is by design; the D way of dealing with this would be to split the
> module into a package with multiple modules.

This is often a usable way of doing things, but sometimes not so much. If 
you're writing a script for use with dub --single or rdmd, you lose a lot 
of convenience if you use multiple files. It might also take a lot of time 
to split things up once static constructors get involved.