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

[Vanessa McHale]

I don’t drop support (that would be silly) as often as I write a new library that needs GHC >= 8.0 or sometimes GHC>7.6

I use newer versions of base for unsafeDupablePerformIO and some lazy ST monad features I think

I’d definitely consider older GHCs if there’s enthusiasm. 

Cheers,

> On May 27, 2020, at 12:55 PM, Andreas Abel <andreas.abel at ifi.lmu.de> wrote:
> 
> I am using ghc 7.6 and up.  I dropped support for ghc 7.4 and below because I fancy
> 
>  \case
> 
> which is new in 7.6.
> 
> I'd say there is little reason to support ghc 6 any longer (but probably this is anyway the consensus).
> 
> That said, I do not maintain any libraries.  Libraries should not drop ghc versions lightly.
> 
> On 2020-05-27 16:50, Carter Schonwald wrote:
>> 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 ?
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