[Haskell-cafe] ANN: New Full Platform Build of Haskell Platform 8.2.1 for Mac

Gershom B gershomb at gmail.com
Wed Oct 18 07:11:34 UTC 2017

New linux builds of the full platform are now posted as well, with the
hashes on the website updated.


On Fri, Oct 6, 2017 at 2:14 AM, Gershom B <gershomb at gmail.com> wrote:
> Thanks to some intrepid sleuthing by Albert Y. C. Lai, we realized
> there was a serious problem in the full (not core) builds of HP for
> Mac and Linux (not Windows).
> If you've seen lots of "unusable due to shadowed dependencies" errors
> on packages that came with full 8.2.1 platform installs on those
> systems, this is likely why. We should have tested better and caught
> this, and I'm sorry for the trouble it has caused.
> I've released a new build of the full mac installer, and updated the
> hash on the site. A new generic-linux build should follow soon.
> Regards,
> Gershom
> P.s. For those interested, the technical details are at
> https://github.com/haskell/haskell-platform/issues/285 -- in brief,
> the platform had done builds using inplace conf files but deployed
> using proper target package-conf files. This worked just fine until
> the new abi-depends machinery was introduced for better computing
> dependency mismatches (https://phabricator.haskell.org/D2846 is one
> place to start reading about that). That new machinery then recognized
> that different abis were generated for the inplace conf than the
> target conf, and things went screwy. But the problem here isn't with
> those changes -- it's with our inadequate testing that should have
> caught when things went wrong and alerted us that we needed to step
> back and fix things earlier, and the responsibility for that is all on
> me.

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