Git, the D package manager

[Daniel Kozak via Digitalmars-d]

On Monday, 2 February 2015 at 08:09:39 UTC, Vladimir Panteleev 
wrote:
> 1a. rdmd and D's module system:
>
> When you run `dmd -o- program.d`, the compiler will 
> automatically read all modules imported by your program, and 
> their imports, and so on. It does so by searching the 
> filesystem across its search path for matches which correspond 
> with D's module system, and only reads those files that are 
> needed.
>
> rdmd leverages this by collecting (and caching) the list of 
> modules used in the program, and passing that list to the 
> compiler. The compiler will then compile no more and no less 
> than the exact set of modules transitively imported by the 
> program.
>
> In contrast, Dub's default modus operandi is to blindly send to 
> the compiler all *.d files found in the "src" folder, whether 
> they're actually used or not. Not only can this be slower if 
> not all modules are always used, but it also won't work if the 
> source code contains multiple entry points, forcing you to 
> write complicated configuration files (i.e. do the computer's 
> work for it).

And this is reason why rdmd suck (in my case).
Example:

return 
cast(EntityManagerFactory)Object.factory("cz.dlang.ddpa.EntityManagerFactoryImpl"); 
// this does not work with rdmd but works ok with dub