Pugs, the one and only Perl 6 in Haskell implementation, was cabalised
and uploaded to hackage.haskell.org today. 5 minutes later it landed
in AUR. :)
http://aur.archlinux.org/packages.php?ID=17958
This is a flagship Haskell application, so worth testing that it builds
OK. You can also get binaries from the overlay, of course.
-- Don