Re: [boost] date_time -> serialization (Was: spirtit -> serialization)

Subject: Re: [boost] date_time -> serialization (Was: spirtit -> serialization)
From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2014-06-15 11:16:30

> -----Original Message-----
> From: Boost [mailto:boost-bounces_at_[hidden]] On Behalf Of Peter Dimov
> Sent: 15 June 2014 12:46
> To: boost_at_[hidden]
> Subject: [boost] date_time -> serialization (Was: spirtit -> serialization)
> 
> Vicente J. Botet Escriba wrote:
> Le 15/06/14 12:48, Andrey Semashev a écrit :
> > > The approach of extracting glue headers to separate submodules is
> > > not scalable. We have many other libraries using the same approach
> > > to optional dependencies.
> >
> > Why? I don't see why I would depend on Serialization if I don't use it
> > even if I use DateTime. IMHO, it is up to the client of the
> > serialization of the DateTime types to use the DateTime.Serialization
sub-module.
> >
> > What others think?
> 
> I think that Vicente is right in this case. Moving serialization support to a
submodule
> of DateTime will make the dependency report nicer _and_ it will actually be
correct
> from the perspective of an automatic downloader. If you use DateTime, you'll
get
> the DateTime repo, along with the serialization support, but you will not get
the
> Serialization repo (and its dependencies) if you don't use Serialization. And
this is
> exactly as it should be, unless I'm missing something subtle.
> 
> It seems to me that this is a legitimate use of sub-sub-modules.

I've followed this thread with interest and general support, but there is one
factor that doesn't seem to be 'factored-in' in.

If someone is using Serialisation then isn't there a very high probability that
they are also using DateTime?

So having these in the same package doesn't really matter (except for the
artificial level number)?

Looking at the shrink-wrap users, I have a suspicion that this applies quite
widely - many people will manage to pull in a big chunk of Boost.

Rearranging the modules isn't going to change this much.

Sub-sub-modules sound Very Evil to me.

KISS applies?

Paul

---
Paul A. Bristow
Prizet Farmhouse
Kendal UK LA8 8AB
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