phobos dependencies

[Martin Nowak]

On 12/20/2013 06:27 PM, Andrei Alexandrescu wrote:
>
> I had this idea fot a while, and Walter is favorable of it as well -
> extend "import" for one-shot use. With that feature the example would
> become:
>
>      void topN(alias less = "a < b",
>              SwapStrategy ss = SwapStrategy.unstable,
>              Range, RandomGen)(Range r, size_t nth, ref RandomGen rng)
>          if (isRandomAccessRange!(Range) && hasLength!Range
>              && import.std.random.isUniformRNG!RandomGen)
>      { ... }
>
> In this case "import" would syntactically be placed at the beginning of
> a qualified name, meaning "import this module lazily and look up the
> symbol in it".
>
> This would simplify quite a lot of two-liners into one-liners in other
> places, too.
>
>
> Andrei

This is problematic for dependency generation à la rdmd.
The compiler won't know the import until the lazy symbol
is used, thereby making it impossible to build all dependencies
into a library using rdmd.