They were generated by darcs wherever somebody pushed a patch. They are out of date now. Github has ways to download the repo as an archive, but there might not be much point in keeping that method since I understand git is installed much more widely than darcs.
The xmonad README mentions the following "development snapshot" links:
http://code.haskell.org/xmonad/xmonad.tar.gz
http://code.haskell.org/XMonadContrib/xmc.tar.gz
Is someone creating these manually or were they nightly snapshots from
Darcs? If these aren't actively maintained (and generated from the Git
repo) then I suggest we remove them from the README.
--
Peter Jones, Founder, Devalot.com
Defending the honor of good code
_______________________________________________
xmonad mailing list
xmonad@haskell.org
http://mail.haskell.org/cgi-bin/mailman/listinfo/xmonad