What Haskell users are actively maintaining or deving software using ghc <8

[David Feuer]

Then there's the ST+multithreading bug in older versions that can produce
wrong answers at random.

On Wed, May 27, 2020, 11:58 AM Alexey Kuleshevich <alexey at kuleshevi.ch>
wrote:

> Related question for those folks that still haven't moved to ghc-8. How do
> you guys write production code with such an old compiler? I am sure using
> older ghc itself is fine, but how can you rely on outdated libraries that
> contain bugs and security holes? A lot of the critical libraries do not
> even support ghc-7.10 (yaml, conduit, tls, resourcet, persistent,
> cryptonite, crypto-api, yesod, servant, etc.) while other support at most
> ghc-7.8 (network, aeson, unordered-containers ..) These are just a few
> libraries from the top downloaded list on Hackage. Also, Carter, you
> suggested recently that vector might drop support for ghc-7 as well:
> https://github.com/haskell/vector/issues/297#issuecomment-581601804
>
> I personally rarely use ghc that is older than ghc-8.2, while most of the
> time I stay on a version that is just one major version short of the latest
> one that is released, simply because that is usually the latest stackage
> lts (eg. now it is lts-15, which is ghc-8.8.3)
>
> Alexey.
>
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Wednesday, May 27, 2020 6:25 PM, Helmut Schmidt <
> helmut.schmidt.4711 at gmail.com> wrote:
>
>
> It's nice to verify that my code still works with GHC 7.0 which to my
> knowledge is the GHC version most compliant to the published Haskell 2010
> Report. But I realize that nowadays making do with plain Haskell 2010 and
> without all those   GHC extensions may not be a popular opinion though.
>
>
> Am Mi., 27. Mai 2020 um 14:50 Uhr schrieb Carter Schonwald <
> carter.schonwald at gmail.com>:
>
>> Hey all,
>> What are the oldest ghc versions folks are actually using to build
>> software they actually use ? What are the contexts for these ?
>>
>> I know a lot of library maintainers, myself included try to make it easy
>> to suport as wide a version range of ghc as possible.  In my case I find it
>> useful to just have another way to evaluate how stable I can make a
>> library.
>>
>> That said, what actual old ghc versions are folks actually using?
>>
>> Afaict, the oldest ghc currently in a lts linux distro is ghc 7.0 in
>> centos 6
>>
>> Then centos 7 and the oldest Ubuntu lts are 7.6, then more recent distros
>> plus most other os platforms like the bsds are on 8.0-8.4 as the oldest
>> supported / provided ghc.
>>
>> Who are the users today and how important are they for todays library
>> maintainers ?
>> _______________________________________________
>> Libraries mailing list
>> Libraries at haskell.org
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries
>>
>
> _______________________________________________
> Libraries mailing list
> Libraries at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/libraries/attachments/20200527/290ddff8/attachment.html>