GHC versions for 3.0?

[Iustin Pop]

Hi all,

I made the mistake of attempting to build ganeti 3.0 beta on a sid box,
with GHC 8.8, which causes no end of fun…

To solve the fun and make this actually built, would be good to settle
which versions of GHC we support (if we didn't already and I missed the
email or simply forgot).

IMO, anything older than 8.0 will generate huge amounts of pain. Debian
oldstable is on 8.0.1, and stable is on 8.4. I would of course prefer as
new as possible, but what do other people think?

Fun things:

* cabal new-style vs. old-style builds
* cabal API removals as we're using unstable APIs
* MonadFail final move in GHC 8.8

and I still haven't finished to get it to compile :)

thanks,
iustin

[Rudolph Bott]

Hi Iustin,

I can not add anything directly to the topic, but it seems Apollon already did or is doing some work in this direction:

https://github.com/ganeti/ganeti/issues/1493

https://github.com/ganeti/ganeti/issues/1492

Cheers,

Rudi

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[Iustin Pop]

On 2020-07-08 08:22:22, Rudolph Bott wrote:
> Hi Iustin,
>
> I can not add anything directly to the topic, but it seems Apollon already
> did or is doing some work in this direction:
>
> https://github.com/ganeti/ganeti/issues/1493
> https://github.com/ganeti/ganeti/issues/1492

Ouch, I missed those.

I have Ganeti now working with GHC 8.8, but cleaning up the patches
depends on what the minimum version will be.

Thanks, I'll reply on those bugs.

iustin

> To view this discussion on the web visit https://groups.google.com/d/msgid/ganeti-devel/CAPG4N%3DbqFSmds_bZ-0qWY%2B6uFhSj0dWfR%3Dyvdy9kDRzbzRTnmA%40mail.gmail.com.

[Ansgar Jazdzewski]

Hi,

i just ask myself, if we try to cover GHC 8.8 do we still have an
upgrade path and can build ganeti 3.0 for ubuntu 18.04?

Thanks,
Ansgar

> To view this discussion on the web visit https://groups.google.com/d/msgid/ganeti-devel/20200708081859.GC1450192%40teal.hq.k1024.org.

[Iustin Pop]

On 2020-07-08 15:21:32, Ganeti Development List wrote:
> Hi,
>
> i just ask myself, if we try to cover GHC 8.8 do we still have an
> upgrade path and can build ganeti 3.0 for ubuntu 18.04?

Ah, good point. 18.04/bionic (which is not that old) ships with GHC
8.0.1, which means we should keep 8.0 compatibility.

It's doable, but not pleasant :)

I'll reply on bug too.

iustin

> To view this discussion on the web visit https://groups.google.com/d/msgid/ganeti-devel/CAEMVdVx-3CUqMV%2BbkZLiwXEW3V6ZRjUmZ7aRZjwYC6CNPZYYuw%40mail.gmail.com.