Re: [boost] [type_traits] Rewrite and dependency free version

Subject: Re: [boost] [type_traits] Rewrite and dependency free version
From: John Maddock (jz.maddock_at_[hidden])
Date: 2015-02-01 08:39:08

>> Note that we need some kind of markup facility to deal with optional
>> dependencies anyway - to avoid the "everything depends on Serialization"
>> issue.
>
> Circular dependencies won't work well with clang/c++17 'modules'. Strongly
> connected components form what I called 'incidental modules' in previous
> emails.
>
> Find a way to convince Robert to allow splitting serialization.

That doesn't solve the issue I was referring to: namely library X 
depends on Y *only* if you're using Y anyway.  Serialization being a 
prime example: many libraries "apparently" depend on it, but the 
dependency is only a true one if you're using serialization anyway.

Such interoperability should be positively encouraged, but I fear 
package management may actively discourage it unless we make the 
packaging smarter.

John.