Do we know why YAML format won’t be appropriate? It has some readability points going for it.

— Gaby

> On Apr 4, 2019, at 5:51 AM, Ben Boeckel via Modules <modules_at_lists.isocpp.org> wrote:
>
>> On Thu, Apr 04, 2019 at 07:41:51 -0400, Nathan Sidwell wrote:
>> The intent of json output is to give IDEs more easily digested
>> information. That option has taken the approach of naming the format
>> not the purpose.
>
> Right, but the fact that this uses JSON is just an implementation
> detail. The contained information is what's important, not the data
> format.
>
>> One of the surprises (to me) was that Ben discovered he needed to output
>> *both* make-format and json-format dependencies from the same
>> invocation.[1] This suggests tying the output format and the
>> dependency-file together in some way.
>
> The make-format output is to tell build tools the dependencies of the
> scan step itself. If the format is adopted and make, ninja, etc. learn
> how to read the JSON format since it contains a superset of the
> information, the make output could be dropped, but that isn't the case
> today.
>
>> So we could leave the old make-format '-MF filename' alone. The
>> dependency options are all -M<something>, and for good or evil, staying
>> with that might be best. Thus a new '-MJ filename' option (Make JSON)?
>> And having something so baroque avoids arguments about exactly which
>> word best describes the output?[2]
>
> Remember that the format is versioned; we may want `-fdep-format=trtbd1`
> *and* `-fdep-format=trtbd2` at some point (to support older tools as
> well as new tools at the same time), so the output needs to support
> taking an argument somewhere (and optional arguments like `make -j` are
> not fun).
>
> --Ben
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