[Haskell-cafe] problem building lambdabot

[Michael Vanier]

When I try to build lambdabot, I get this:

Configuring lambdabot-4.0...
configure: Dependency base-any: using base-2.1.1
configure: Dependency unix-any: using unix-2.1
configure: Dependency network-any: using network-2.0.1
configure: Dependency parsec-any: using parsec-2.0
configure: Dependency mtl-any: using mtl-1.0.1
configure: Dependency haskell-src-any: using haskell-src-1.0.1
configure: Dependency readline-any: using readline-1.0
configure: Dependency QuickCheck-any: using QuickCheck-1.0.1
Setup.hs: cannot satisfy dependency arrows-any

I'm using ghc 6.6.1 compiled from source (by me) on Debian Linux.  I thought that arrows were 
included with the ghc distribution.  Does anyone know what's happening and how to fix it?

TIA,

Mike