On Feb 12, 2010, at 18:17 , Jason Dagit wrote:

I wanted the takusen sources as I may want to add features.  I looked on hackage and it lists this url for the repository:
http://darcs.haskell.org/takusen

In general, stuff that was on darcs.haskell.org (which is being retired) seems to be moving to code.haskell.org.  I found http://code.haskell.org/takusen and it looks reasonably up to date (10 Feb).