April 2016 - cabal-devel

why is not possible to update cabal to 1.22 ? (Ubuntu 14.04)
by Juan Carlos Saenz Carrasco 27 Apr '16

27 Apr '16

Hello I have tried to update, upgrade, and finally uninstall and reinstall again haskell platform in order to get the latest version for cabal since the current version 1.16 (running under Ubuntu 14.04 ) always triggers the following error message not matter what package I try to install: ghc: ghc no longer supports single-file style package databases (dist/package.conf.inplace) use 'ghc-pkg init' to create the database with the correct format. Failed to install XXX ... ExitFailure 1 I have also tried cabal install cabal-install-1.22.0.0 --global --force-reinstalls but again, it fails. Thanks, JC

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Cabal 1.24 status update
by Mikhail Glushenkov 19 Apr '16

19 Apr '16

Hi *, A short update on the status of the 1.24 release. Due to GHC 8 final having been repeatedly postponed we were able to get the nix-local-build work and a bunch of other patches initially targeted for 1.24.1.0 merged before the first release off the 1.24 branch. However, a number of solver issues affecting setup/component dependencies were discovered in the meantime. They are not considered release-critical, but are being actively looked into, and we're hoping to get them fixed before the first 1.24 release. This work is being done on the 'solver' branch in the repo [1]. So right now I'm planning to cut the 1.24 release either soon after GHC 8 RC4 is out, or once those solver patches are merged, whichever comes first. [1] https://github.com/haskell/cabal/commits/solver

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Travis PR build notifications on Slack and IRC
by Edward Z. Yang 08 Apr '16

08 Apr '16

Hello all, I'm happy to announce that you can get IRC and Slack notifications for Travis builds on https://github.com/haskell/cabal . This should make it more convenient to submit pull requests as you can get pinged when the build is finished. IRC notifications are only for branches on the main haskell/cabal repository (not PRs; this is a limitation of Travis's IRC integration) and can be subscribed to by joining ##haskell-cabal on freenode.net I would not have setup Slack notifications, except between Slack and HipChat this is the only way to get Travis to send per-PR messages at the moment. Slack notifications are on the haskell-cabal Slack team, and also include build notifications for PRs. The free tier requires explicit signups so I've deployed a small app https://haskell-cabal.herokuapp.com/ to automatically issue invites; just type in your email and it will give you an invite to the Slack channel. (Courtesy of https://github.com/outsideris/slack-invite-automation) The Travis bot posts to #travis. I personally am connected to Slack over the IRC bridge; Google for setup instructions. If you would like to be added as an admin for the Slack instance please let me know and I'll add you. I've also added this information to the Cabal wiki front page: https://github.com/haskell/cabal/wiki Edward

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