Re: Breaking Changes and Long Term Support Haskell

[Taru Karttunen]

On 21.10 17:42, Gregory Collins wrote:
> All I'm saying is that if we want to appeal to or cater to working software
> engineers, we have to be a lot less cavalier about causing more work for
> them, and we need to prize stability of the core infrastructure more
> highly. That'd be a broader cultural change, and that goes beyond process:
> it's policy.

I think that how the changes are handled can make a large difference.

E.g. if

A) Most of Hackage (including dependencies) compiles with new GHC.
(stack & stackage helps somewhat)

B) There is an automated tool that can be used to fix most code
to compile with new versions of GHC without warnings or CPP.

C) Hackage displays vocally what works with which versions of
GHC (Status reports do help somewhat)

Then I think much of the complaints would go away.

- Taru Karttunen
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Re: Breaking Changes and Long Term Support Haskell

[Taru Karttunen]

On 22.10 09:04, Herbert Valerio Riedel wrote:
> Fyi, Alan is currently working on levaraging HaRe[1] in
> 
>  https://github.com/alanz/Hs2010To201x (the `parsing-only` branch)
> 
> and it's already showing great promise. However, tools like this will
> only be able to handle the no-brainer cases, as in general it's a NP
> hard problem. But luckily, those boring mechanical refactorings usually
> represent the vast majority, and that's the tedious work we want
> tooling to assist us most with.

Yes, getting it 99% there as an automated tool would be enough
for most cases.


> > C) Hackage displays vocally what works with which versions of
> > GHC (Status reports do help somewhat)
> 
> 
> I.e. something like
> 
>   http://matrix.hackage.haskell.org/package/text

Yes! Is there a reason that it is not displayed on
http://hackage.haskell.org/package/text which only
displays a link to Status of a 7.8.3 build?

How many percent of Hackage is built with matrix.h.h.o
and is there a plan to integrate it into Hackage pages?

- Taru Karttunen
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