Resurrecting a 2017 thread: dub and dmd as dub dependencies

[Seb]

On Monday, 5 August 2019 at 07:22:33 UTC, FeepingCreature wrote:
> On Tuesday, 8 August 2017 at 09:21:54 UTC, Moritz Maxeiner 
> wrote:
>> On Tuesday, 8 August 2017 at 09:17:02 UTC, data pulverizer 
>> wrote:
>>> Hi,
>>>
>>> I would like to know how to specify dmd or ldc compiler and 
>>> version in a json dub file.
>>>
>>> Thanks in advance.
>>
>> You can't [1]. You can specify the compiler to use only on the 
>> dub command line via `--compiler=`.
>>
>> [1] https://code.dlang.org/package-format?lang=json
>
> Any reason you couldn't, say, specify the compiler version in 
> the dub.sdl, and dub would build it (and use it) using the 
> regular .dub/packages mechanism?
>
> Same should work for dub itself. Treat the current dub/dmd as a 
> bootstrap compiler instead of the main compiler.

You could build a Makefile (or similar) around dub which ensures 
the exact compiler version gets downloaded.
Here's a template I use for this purpose:
https://github.com/wilzbach/d-bootstrap