Transitioning std lib modules/packages

[Ilya Yaroshenko via Digitalmars-d]

On Monday, 28 November 2016 at 14:03:31 UTC, rikki cattermole 
wrote:
> On 29/11/2016 3:01 AM, Andrea Fontana wrote:
>> On Monday, 28 November 2016 at 13:51:13 UTC, Andrei 
>> Alexandrescu wrote:
>>> [...]
>>
>> It's just a simple tag. And I hope that breaking changes are 
>> not that
>> frequent!
>> I think that on worst case there will be a new api level every 
>> dmd
>> release. It just happens, but in this way it is managed in a 
>> better way.
>> If needed we can use API_LEVEL_DMD_2071_3 as identifier. But 
>> IMO
>> PHOBOS_API_LEVEL_2 makes more sense.
>>
>> It would be really easy to mantain a back-compatibility. Just 
>> select the
>> right api level, and you can still use new dmd version! 
>> Something
>> similar really works fine with android api_level.
>
> Instead of "API_LEVEL_DMD_*" this already works:
>
> static if (__VERSION__ >= 2072)

Compiler version should be split from a library versions. --Ilya