Projects in the topic haskell
Haskell is a general-purpose, statically typed, purely functional programming language with type inference and lazy evaluation.


Learn Haskell on Project Euler problems

a project by mvidner

I am a beginner: I have read 1½ books on Haskell. I want to practice. Haskell is a purely functional, lazily evaluated, strongly typed (with

Updated almost 5 years ago. 3 hacker ♥️.

Automate Haskell Packaging

an invention by psimons

We have various individual tools to automate parts of the Haskell packaging process, like cabal-rpm, but those tools aren't integrated into a fully automated system that keeps Haskell packages up-to-date with as little human intervention as possible. I would like to build that system. Stackage provides us with an accurate list of packages and versions that are known to work together well, and there are basically two flavors: the nightly snapshot (bleeding edge) and the LTS release (stable API). The former is appropriate for Tumbleweed, IMHO, and the latter is appropriate for stable releases like SLE or Leap. Now, we can use cabal-rpm to generate spec files automatically for all packages in a Stackage release and check them into OBS. The process does need some tweaking, however, because cabal-rpm generates spec files that don't always work well for SUSE. We could (a) branch cabal-rpm and add SUSE-specific know-how to remedy that issue or we could (b) maintain a set of patches that adapt the generated spec files to our needs. Once the Stackage releases are available in an OBS development project, we need another automated process that submits all updated packages to openSUSE:Factory, etc.

Updated about 5 years ago. 3 hacker ♥️.

Romantic photo competition

a project by kalabiyau

Hackweek is a place for fun and things and also great things and a lot of fun. Some things don't require a reason - they are fun, that's all to it. Here goes a small competition with a lot of fun to it. Find Klaas in the office.

Updated almost 5 years ago. 11 hacker ♥️. 1 follower.

Write a Skyroads clone

an idea by fschnizlein

Who of you remembers this awesome game? One of my favorites when I was a child (oh yes!). https://www.myabandonware.com/media/screenshots/s/skyroads-xmas-special-23c/skyroads-xmas-special_6.png

Updated about 2 years ago. 1 hackers ♥️. Has no hacker: grab it!

Automatically guess changelog entries for Haskell packages from upstream

an invention by psimons

All our packages have a *.changes file and ideally that file would mention relevant changes from upstream, i.e. during version updates. Currently, we find that information manually when packaging Haskell software. This is unsatisfactory because of the sheer size of the package set and the massive number of updates we receive from Hackage. The packaging itself is completely automatic, but editing the *.changes files is not and this issue prevents us from shipping more packages in Tumbleweed and elsewhere. Now, during this Hackweek I'd like to write code that given two Haskell package versions old and new can determine the upstream changelog entries between those two and create a pleasantly formatted entry for the *.changes file that won't need any manual editing to pass the review team. Then I'd like to integrate this into cabal2obs, or maybe even cabal2spec.

Updated about 5 years ago. 2 hacker ♥️. 1 follower.

Write a simple ESMTP mail server in Haskell

a project by psimons

Hackweek 21?

Postmaster desperately needs a mail spool. I need to come up with a good way to store meta information about queued messages. An sqlite database seems like a natural fit because I might want to do some nontrivial queries in there to figure out which messages to deliver (and where). On the other hand, interfacing with sqlite is a bit unpleasant, so instead I might want to write one big JSON file that contains all relevant information. That would certainly suffice for the first version ...

Updated about 3 years ago. 2 hacker ♥️. 2 followers.

Update Haskell ecosystem in Tumbleweed to GHC-9.6.x

a project by psimons

Project Description

We are currently at GHC-9.4.x, which a bit old. So I'd like to take a shot at the latest version of the compiler, GHC-9.6.x. This is gonna be interesting because the new version requires major updates to all kinds of libraries and base packages, which typically means patching lots of packages to make them build again. A significant part of the development effort will be live-streamed on Twitch so that others can collaborate easily.

Updated 9 months ago. No love. 3 followers.