[ghc-steering-committee] Please review #632: introduction of new language editions (inc. GHC2024)

[Matthías Páll Gissurarson]

I like it, but preferably with Simon’s suggested edit.

/Matti Palli


On Wed, Apr 9, 2025 at 17:22 Malte Ott via ghc-steering-committee <
ghc-steering-committee at haskell.org> wrote:

> I like this very much. In favor!
>
>
> On 9 April 2025 13:18:59 CEST, Simon Peyton Jones via
> ghc-steering-committee <ghc-steering-committee at haskell.org> wrote:
>
>> I'm in support. I have added a suggested edit.
>>
>> On Wed, 9 Apr 2025 at 10:34, Simon Marlow via ghc-steering-committee <
>> ghc-steering-committee at haskell.org> wrote:
>>
>>> Committee: I'm proposing we accept #632, which will change the policy
>>> for new language editions such that new GHC versions will use the latest
>>> language edition by default if one is not specified. GHC 9.10 didn't do
>>> this, but we'll aim to do it in the future.
>>>
>>> Not specifying an explicit language edition is a relatively rare
>>> situation - in particular Cabal always sets the language edition. The
>>> notable cases where the default language edition will be used is when
>>> invoking "ghc" or "ghci" directly from the shell; see the proposal for more
>>> details.
>>>
>>>  If you have comments on the proposal, please discuss on github:
>>> https://github.com/ghc-proposals/ghc-proposals/pull/632
>>>
>>> I think we should be able to reach consensus pretty quickly on this one,
>>> shall we say 2 weeks for comments?
>>>
>>> Cheers
>>> Simon
>>>
>>> On Tue, 8 Apr 2025 at 09:17, Adam Gundry <adam at well-typed.com> wrote:
>>>
>>>> Dear Committee,
>>>>
>>>> I propose to amend the process for introducing new language editions,
>>>> such that GHC always uses the latest language edition by default. In
>>>> particular this would change the default language edition to GHC2024
>>>> (it
>>>> currently remains GHC2021):
>>>>
>>>> https://github.com/ghc-proposals/ghc-proposals/pull/632
>>>>
>>>> https://github.com/adamgundry/ghc-proposals/blob/ghc2024-amendment/proposals/0372-ghc-extensions.rst#breaking-changes
>>>>
>>>> https://github.com/adamgundry/ghc-proposals/blob/ghc2024-amendment/proposals/0613-ghc2024.rst#implementation-plan
>>>>
>>>> I'd like to invite Simon Marlow to be the shepherd. (Originally I was
>>>> shepherding this amendment myself, in the hope that it would be a quick
>>>> amendment in time for GHC 9.10, but that was clearly a forlorn hope!)
>>>>
>>>> Please guide us to a conclusion as outlined in
>>>> https://github.com/ghc-proposals/ghc-proposals#committee-process
>>>>
>>>> Cheers,
>>>>
>>>> Adam
>>>>
>>>>
>>>> --
>>>> Adam Gundry, Haskell Consultant
>>>> Well-Typed LLP, https://www.well-typed.com/
>>>>
>>>> Registered in England & Wales, OC335890
>>>> 27 Old Gloucester Street, London WC1N 3AX, England
>>>> <https://www.google.com/maps/search/27+Old+Gloucester+Street,+London+WC1N+3AX,+England?entry=gmail&source=g>
>>>>
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