Hac 2007 II

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Hac 07 II

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Hac 07 II: Haskell Hackathon

October 5-7, 2007

University of Freiburg, Freiburg, Germany

The 3rd Haskell Hackathon will be held over 3 days, October 5-7 2007, at the University of Freiburg, in conjunction with the Haskell Workshop and ICFP 2007. It is a coding festival, focusing on producing and improving Haskell libraries, tools and infrastructure.

To attend please register, and get ready to hack!

Note: that it is not necessary to register for ICFP, or any of the associated conferences, if you only want to go to the Hackathon. The Hackathon itself will be free, but you will have to pay for travel, accommodation and food.


If you will be attending add your name to the Registration page. Numbers may be limited, depending on availablity of space.


University of Freiburg, Freiburg, Germany.


The Hackathon will be integrated with the university summer campus. This will give us all the infrastructure (room, Internet, etc) at minimal hassle.

Local information

For local information (travel, accommodation etc) see the ICFP local info page.

The Hacking Room

Coming soon



Hac 2007 II will take place on Fri 5 Oct to Sun 7 Oct. The following table shows the workshops and conferences held in Freiburg during the ICFP period:

Date Events
Thu 27 Sep IFL
Fri 28 Sep IFL
Sat 29 Sep IFL
Sun 30 Sep HW, Scheme
Mon 1 Oct ICFP
Tue 2 Oct ICFP
Wed 3 Oct ICFP
Thu 4 Oct CUFP, MM
Fri 5 Oct Hac 2007 II, Erlang, ML, PV
Sat 6 Oct Hac 2007 II
Sun 7 Oct Hac 2007 II

The Hackathon will, tentatively, be held from 10am to 6pm each day, with dinner after at local venues.


What to bring

  • A laptop
  • Wireless cards
  • Power adaptors if necessary
  • Ethernet cable

Before you arrive

  • Pick out a couple of projects to work on and familiarise yourself with them
  • Install an up to date Haskell toolchain.

Projects to work on

Add ideas here for which you think hacking together as a group (rather than individually) would be beneficial.

  • Building tests that give 100% code coverage for package base.
  • Lots of Cabal hacking still to be done
  • Bindings for <your favourite C library>
  • Haskell library for <your favourite task>

Other things:

  • Bit layer on Data.Binary 1.0
  • libxml
  • bytestring parsec
  • combine strictcheck and quickcheck once and for all
  • darcs hacking


The organisers for the Hackathon are:

The organisers can be contacted via:


The local organisers in Freiburg:

Courtesy of the Programming Languages Group at the University of Freiburg.

IRC channel

A Hackathon IRC channel has been set up. Visit:


on freenode.

Previous Haskell hackathons

Related events

Hac 07 II is (unofficially) colocated with ICFP and other conferences:

IFL September 27-29
Haskell Workshop September 30
ICFP October 1-3
CUFP October 4


  • AJG: What can Galois do to help?


The Freiburg background is available under the GNU Free Documentation License, from wikipedia.