Back-porting pattern synonym type signature syntax for GHC 7.8.4 [Re: ANNOUNCE: GHC 7.8.4 Release Candidate 1]

Dr. ÉRDI Gergő gergo at erdi.hu
Tue Dec 2 00:12:12 UTC 2014


With enough intellectual dishonesty, sure...
On Dec 2, 2014 7:29 AM, "Gabor Greif" <ggreif at gmail.com> wrote:

> So it could be regarded as a bugfix?
>
> Em terça-feira, 2 de dezembro de 2014, Dr. ÉRDI Gergő <gergo at erdi.hu>
> escreveu:
>
>> It is clear to everyone that all it would change is the *output* of
>> GHCi's :info and Haddock-generated docs, right? There's no change
>> whatsoever to what programs are accepted by GHC, or what they mean.
>> On Dec 2, 2014 5:44 AM, "Simon Peyton Jones" <simonpj at microsoft.com>
>> wrote:
>>
>>> The issue is not so much timing for 7.8.4 (it's a modes change to
>>> pretty-printing only) but rather that it would make 7.8.4 behave
>>> differently to 7.8.3 (although similarly to 7.10). We typically do not do
>>> that.  And the same would be true of 7.8.5.
>>>
>>> Simon
>>>
>>> | -----Original Message-----
>>> | From: Gabor Greif [mailto:ggreif at gmail.com]
>>> | Sent: 01 December 2014 15:53
>>> | To: Dr. ERDI Gergo
>>> | Cc: Simon Peyton Jones; ghc-devs at haskell.org
>>> | Subject: Re: Back-porting pattern synonym type signature syntax for GHC
>>> | 7.8.4 [Re: ANNOUNCE: GHC 7.8.4 Release Candidate 1]
>>> |
>>> | Gergö,
>>> |
>>> | even if it might be too late for 7.8.4, don't give up hope for 7.8.5
>>> :-)
>>> |
>>> |      Gabor
>>> |
>>> |
>>> | On 11/29/14, Dr. ERDI Gergo <gergo at erdi.hu> wrote:
>>> | > On Wed, 26 Nov 2014, Simon Peyton Jones wrote:
>>> | >
>>> | >> My instinct is that (a)-(c) overwhelm (d); i.e. let sleeping dogs
>>> lie.
>>> | >> But what do others think?
>>> | >
>>> | > Just to give an idea of how limited the scope of this change would
>>> be,
>>> | > I've went and implemented it, on the
>>> 'wip/pattern-synonym-sig-backport'
>>> | > branch (of both GHC and Haddock).
>>> | > _______________________________________________
>>> | > ghc-devs mailing list
>>> | > ghc-devs at haskell.org
>>> | > http://www.haskell.org/mailman/listinfo/ghc-devs
>>> | >
>>>
>>
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