Bug#850915: ghc: Please switch to llvm 3.8 or, better, 3.9

[Gianfranco Costamagna]

On Mon, 19 Jun 2017 13:31:33 +0000 (UTC) Gianfranco Costamagna <locutusofborg at debian.org> wrote:
> Hello,
> >Now that we shipped strech, I really would like to see llvm 3.7 removed.
> >Can we go ahead now ?
> 
> 
> as said, with ghc 8.0.1 and 8.0.2 this seems a little impossible, but as Clint said on debian-haskell
> 
> >> last thing: should we switch llvm? wrt #850915
> >I think the GHC 8.2 release candidates are targeting LLVM 4.0.
> 
> 
> so for Buster we will probably ship 8.2 or something even newer.
> 
> But for now, I don't think such change is worth the effort, specially because it will probably introduce
> bugs because this will be an untested configuration.
> I really hope with 8.2 to make this one disappear :)
> (I guess it will be released in some months)
> 

3.7 can now be removed, because ghc 8.2 (using 3.9) is now in unstable and built.
I also uploaded ghc 8.4 that uses llvm 5.0, so maybe we will move forward in a few weeks with this one.

For llvm 6.0, I'm sorry but it won't be probably be a real plan for one year or so...

I hope this is enough for now, I see 3.8,3.9 are blocked by other reverse-dependencies and 5.0 is fairly new now.

Let me know, or close this bug if you think this is ok for now!

Gianfranco