[Haskell-cafe] [ANNOUNCE] GHC 8.2.2 release candidate 2

[Alan & Kim Zimmerman]

To me this is just further evidence that we need a first class API for tool
makers.  Which is a (slow) work in progress.

Alan

On 6 November 2017 at 19:46, Sven Panne <svenpanne at gmail.com> wrote:

> 2017-11-06 17:54 GMT+01:00 Ben Gamari <ben at well-typed.com>:
>
>> Next time something like this arises please do open a ticket.
>>
>
> Yep, will do...
>
>
>> Yes, I have opened a differential adding such a flag. See D4164 [1].
>> Please bikeshed to taste.
>>
>
> Thanks for the quick fix!
>
>
>> In general I would really prefer that we *not* consider GHCi's REPL to be
>> a stable programmatic interface.
>
>
> I fully understand that, and that's definitely the way to go.
> Nevertheless, parsing tool/compiler output is still one of the most used
> hacks^H^H^H techniques for lots of Emacs modes (and probably other IDEs).
> Not every project is as open to suggestions and changes as GHC is, so this
> is often the only way out.
>
>
>> That being said, we cannot always preemptively add complexity to the
>> project out of fear that a given change might break a hypothetical
>> mechanical consumer.
>
>
> That's of course not what was proposed. :-)
>
>
>> GHCi is first-and-foremost a REPL for users.
>> When evaluating a change, if we feel it is likely that we will break a
>> mechanical user then we will likely guard the change with a flag.
>> However, if not, we won't.
>>
>
> I think the main problem here was communication. I can't speak for the
> haskell-mode maintainers, but for my part I didn't notice the problems
> because I mainly use LTS Stackage and that is still(!) at 8.0.2 (Why? This
> is definitely part of the whole problem.). I tried the 8.2 series only
> sparingly and only via the command line, so this is perhaps what others
> did, too, so the interaction bug went unnoticed for such a long time.
>
> Cheers,
>    Sven
>
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