Scope of D packages

[Jakob Jenkov via Digitalmars-d-learn]

> To be exact it doesn't need the sources, it needs the function 
> signatures and type definitions so the equivalent of C header 
> files. If you don't want to share the full sources with your 
> library you can generate those header files automatically using 
> the -H flag in dmd. It will produce a "D interface" file with a 
> "di" extension.

But - if the library was open source, it would be better to just 
share the sources than a compiled file? (In Java we share/use the 
zipped JAR file with compiled classes).