For Hacakge 2, the distro ecosystem hasn't had quite as much tooling put into it as, say, documentation, and it has changed a little bit from Hackage 1. Previously, there was a cron job that, among tasks like updating documentation, also downloaded distro info and ran < http://code.haskell.org/~ross/hackage-scripts/DistroInfo.hs> on it; the resulting files were read when generating the package page in < http://code.haskell.org/~ross/hackage-scripts/PackagePage.hs>. No such job exists now. However, there is something to replace it in Hackage 2. It is not a cron job; it's more push than pull, actually. Distro maintainers can upload distro information directly to Hackage (either manually, using a form, or programmatically using something like curl). It is currently not exposed or documented that well, unfortunately, and it needs a last 10% of work to be fully functional. If you'd like, I think I'd be able to do it this week. So what does this new API look like? Well, this is the list of distros we know about: http://hackage.haskell.org/distros/ And the set of packages we know about for Fedora: http://hackage.haskell.org/distro/Fedora/packages http://hackage.haskell.org/distro/Fedora/packages.csv The status for a given package: http://hackage.haskell.org/distro/Fedora/package/text Finally, shown on the package page itself: http://hackage.haskell.org/package/text There are per-distro ACLs so that the above information can kept up to date by authorized accounts. There are a few issues with this system currently, such as not being able to edit these ACLs over HTTP (!). Once this is fixed, it will be possible to do: 1. Bulk update: PUT a csv formatted like the one above, which is similar to the current format (the current format is a tuple, like http://people.debian.org/~nomeata/cabalDebianMap.txt). This will wipe the previous set of distro statuses for a given distro. 2. Add/update the distro status of an individual package: this is also a PUT, using two form fields (e.g. version=0.11.2.3&uri= https://apps.fedoraproject.org/packages/ghc-text) 3. Delete the distro status of an individual package: this is a DELETE, perhaps meaning that the package is no longer offered Unlike the previous system, using this *does* require Hackage credentials, and if this data comes from an automatic task, a bot account could possibly be used. It depends on what will work best with the current flow. Best, Matt On Mon, Oct 14, 2013 at 12:08 AM, Jens Petersen wrote:

Hi, it is great that Hackage 2 finally was deployed in production. :-)

How often does Hackage 2 update/pull distro data?

Hackage 1 had a cronjob I believe which ran every few hours I think. But the new Hackage does not seem to pull often/regularly.

For Fedora I updated the data on 18 Sept and then 26 Sept. The update from 18th Sept is reflected in Hackage but not 26th Sept. Checking more I guess the 18 Sept was still during Hackage1 so it looks like Hackage2 has not updated it distro data since going into production?

Is there a cronjob setup on the new hackage server currently for pulling distro package data?

Thanks, Jens

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