Haskell is a pure functional language.

Haskell Packaging

http://www.haskell.org/cabal/

Debian Haskell

Haskell Collaborative Maintenance information -- start here
Haskell Policy
debian-haskell mailing list
Another (really old) example of how to package a Haskell library using dh_haskell
A blog post about packaging Haskell
#debian-haskell IRC channel on OFTC
Ubuntu wiki page
Status of Haskell platform in Debian

TODO

A raw list of things to do, hoping that somedays someone will start working on them...

Fix policy, which is very old
- Adapt it to the current best-practises and haskell-devscripts workflow
- Description guidelines, see for example http://lists.debian.org/4C2FA27F.50303@poisson.phc.unipi.it
Fix wiki pages, which are very old too (some examples are completely deprecated)