[ghc-steering-committee] Please review #673: Amendment to -jsem proposal #540

[Sebastian Graf]

I think changes to the communication protocol *are* user-facing, in that 
any change to the protocol could implies a breaking change between all 
cabal releases in the future and all GHC releases in the past.
It appears that is the case for the planned release of 
`semaphore-compat-2`, but I'm not 100% sure.

In that light, I think it's good to discuss in a proposal to ensure we 
do not sign off lightly on such breaking changes, in particular for 
future versions of `semaphore-compat`.

I will express support once compatibility and breaking changes are 
properly addressed.

Sebastian

------ Originalnachricht ------
Von "Arnaud Spiwack" <arnaud.spiwack at tweag.io>
An "Simon Peyton Jones" <simon.peytonjones at gmail.com>
Cc ghc-steering-committee at haskell.org
Datum 24.09.2024 04:17:17
Betreff Re: [ghc-steering-committee] Please review #673: Amendment to 
-jsem proposal #540

>Quite frankly, this is barely any user-facing change at all. 
>Technically the semaphore could previously be shared by non-Haskell 
>processes in ways the updated proposal doesn't allow. But it's not 
>really something people do. So it all sounds reasonable.
>
>On Mon, 23 Sept 2024 at 19:10, Simon Peyton Jones 
><simon.peytonjones at gmail.com> wrote:
>>I'm happy to support too, but I would like to see presentational 
>>changes, so the final proposal makes sense when read in 5 yrs time.
>>
>>Simon
>>
>>On Sat, 21 Sept 2024 at 20:45, Malte Ott <malte.ott at maralorn.de> 
>>wrote:
>>>I agree.
>>>
>>>On 2024-09-21 09:16, Eric Seidel wrote:
>>> > Hi all,
>>> >
>>> > This seems like a sensible update to an accepted proposal.
>>> >
>>> > I recommend we accept the amendment.
>>> >
>>> > Eric
>>> >
>>> > On Thu, Sep 19, 2024, at 19:00, Erik de Castro Lopo wrote:
>>> > > Hi all,
>>> > >
>>> > > This is minor updates to correct an existing approved proposal.
>>> > >
>>> > > I approve of these changes.
>>> > >
>>> > > Erik
>>> > >
>>> > > Adam Gundry wrote:
>>> > >
>>> > >> Dear Committee,
>>> > >>
>>> > >> Zubin Duggal proposes to amend proposal #540, which introduced 
>>>the -jsem
>>> > >> parallelism control mechanism, so that it can avoid 
>>>incompatibilities
>>> > >> arising from different system C library implementations:
>>> > >>
>>> > >> https://github.com/ghc-proposals/ghc-proposals/pull/673
>>> > >>
>>> > >> 
>>>https://github.com/wz1000/ghc-proposals/blob/new-jsem/proposals/0540-jsem.rst
>>> > >>
>>> > >> I'd like to nominate Eric Seidel as the shepherd, since he was 
>>>the
>>> > >> shepherd of the original proposal.
>>> > >>
>>> > >> 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
>>> > >> _______________________________________________
>>> > >> ghc-steering-committee mailing list
>>> > >> ghc-steering-committee at haskell.org
>>> > >> 
>>>https://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-steering-committee
>>> > >
>>> > >
>>> > > --
>>> > > 
>>>----------------------------------------------------------------------
>>> > > Erik de Castro Lopo
>>> > > http://www.mega-nerd.com/
>>> > > _______________________________________________
>>> > > ghc-steering-committee mailing list
>>> > > ghc-steering-committee at haskell.org
>>> > > 
>>>https://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-steering-committee
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>>> > 
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>>_______________________________________________
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>
>
>--
>Arnaud Spiwack
>Director, Research at https://moduscreate.com and https://tweag.io.
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