Difference between revisions of "Haskell package guidelines"

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[[Category:Package development]]
[[Category:Package development]]
[[it:Haskell Package Guidelines]]
[[it:Haskell package guidelines]]
{{Package Guidelines}}
[[ja:Haskell パッケージガイドライン]]
{{Expansion|Please help improve this article by creating reasonable [[Creating packages|package creation guidelines]] for [[Haskell]] packages. The previous content on this page, which was unrelated to packaging guidelines, has been moved to [[ArchHaskell]].}}
[[Wikipedia:Haskell|Haskell]] is well supported on Arch Linux.
{{Package guidelines}}
GHC and a few core packages are available in the [[Official Repositories|official repositories]].
For more serious Haskellers, the [[ArchHaskell]] community project provides many packages from [http://hackage.haskell.org Hackage], and the number is growing.
See the [[ArchHaskell]] community page for contact details and ways to help.
This document aims to cover standards and guidelines for producing good [[Haskell]] [[Creating packages|packages]] on Arch.
== Haskell Packages ==
To use Haskell on Arch Linux, you have two mutually exclusive options:
# Use packages from the official Arch Linux repositories. These are a well maintained small subset of all Haskell packages. Just install them the way you would install anything else on Arch Linux. Examples of what is available: in the [https://www.archlinux.org/packages/?arch=x86_64&repo=Extra&q=haskell&last_update=&limit=50 extra] and [https://www.archlinux.org/packages/?arch=x86_64&repo=Community&q=haskell&last_update=&limit=50 community] repositories. The packages here should satisfy people who just want to use the Haskell Platform. You may also combine this option with other packages from unofficial sources like the AUR.
# Use the ArchHaskell project's unofficial repositories. These contain a much larger subset of what's available on Hackage. As a community effort, we often need volunteers to help maintain and add more packages to these repositories. Read on for information about using them.
=== [haskell-core] ===
The [haskell-core] repository is the base repository of packages maintained by the ArchHaskell team.
[haskell-core] can be accessed by adding the following entry to {{ic|/etc/pacman.conf}} (above [extra]):
Server = http://xsounds.org/~haskell/core/$arch
Server = http://www.kiwilight.com/haskell/core/$arch
The set of packages in the [haskell-core] repository is derived from the '''habs''' tree officially located [https://github.com/archhaskell/habs here]. A tool called [https://github.com/magthe/cblrepo cblrepo] is used to keep the '''habs''' tree synchronized with the official Haskell packages from [http://hackage.haskell.org/packages/hackage.html Hackage].
Putting [haskell-core] above [extra] will ensure that the packages from [haskell-core] take precedence, in case of duplicate packages in the two repositories.
The repositories provide both file listings (by using {{ic|repo-add --files}}), package deltas ({{ic|repo-add --delta}}), and both packages and the database are signed.  The fingerprint of the key used for signing is:
  pub  2048D/4209170B 2012-12-26
        Key fingerprint = F310 4992 EBF2 4EB8 72B9  7B9C 32B0 B453 4209 170B
  uid                  ArchHaskell (Magnus Therning) <magnus@therning.org>
  sub  2048D/A418C0FE 2012-12-26
If you use {{ic|SigLevel &#61; Required TrustedOnly}} in {{ic|/etc/pacman.conf}} for [haskell-core], then you need to do {{ic|sudo pacman-key --lsign-key 4209170B}} to add Magnus Therning's key.
=== [haskell-web] ===
The [haskell-web] repository builds on [haskell-core], providing several more packages, especially those useful for web applications.
Server = http://archhaskell.mynerdside.com/$repo/$arch
Add it after [haskell-core].
=== Last resorts ===
* [https://aur.archlinux.org/packages.php?O=0&K=haskell- Haskell packages in the AUR]
* cabal-install directly
Unfortunately, many of the packages in the AUR are outdated due to a lack of resources.
If you have the time, it is recommended to use cblrepo and create something like [haskell-web], which can then be added to the collection of haskell-providing repositories.
== Improving ArchHaskell ==
=== Community ===
See the [[ArchHaskell]] community page and get in touch via the mailing list or the IRC channel.
=== Overview ===
The plan is to have one user-facing repository, [haskell], which merges the packages available in various satellite repositories (like [haskell-web]), thereby distributing the maintenance load.
One satellite repo is special, the [haskell-core] repository, which provides packages that are dependencies of all the other satellites.
=== [haskell-core] maintenance ===
* [haskell-core] is an Arch repo hosted at kiwilight and xsounds.
* [haskell-core] is in sync with the [https://github.com/archhaskell/habs habs] cblrepo database.
=== Other repo maintenance ===
For example, for haskell-foo, ensure:
* haskell-foo is a cblrepo database, possibly using packages from [haskell-core] as DistroPkgs.
* Whenever [haskell-core] is updated, haskell-foo's database is updated to match within a reasonable time.
=== Creating another repo ===
=== List of satellite repos ===

Latest revision as of 12:09, 24 September 2017

Tango-view-fullscreen.pngThis article or section needs expansion.Tango-view-fullscreen.png

Reason: Please help improve this article by creating reasonable package creation guidelines for Haskell packages. The previous content on this page, which was unrelated to packaging guidelines, has been moved to ArchHaskell. (Discuss in Talk:Haskell package guidelines#)
Package creation guidelines

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This document aims to cover standards and guidelines for producing good Haskell packages on Arch.