haskell-src-exts fails to install with missing dependencies

[Dominic Steintiz]

fourier:/home/dom1 # cabal upgrade haskell-src-exts
> Resolving dependencies...
> Downloading haskell-src-exts-1.9.0...
> <command line>: cannot satisfy -package Cabal-1.8.0.2:
>     Cabal-1.8.0.2-72f6eafc7def741b28f6ec75d2686d14 is unusable due to
> missingor recursive dependencies:
>       process-1.0.1.2-8b5308cb23fbdc3c2df27e298550937f
>     (use -v for more information)
> cabal: Error: some packages failed to install:
> haskell-src-exts-1.9.0 failed during the configure step. The exception
> was:
> ExitFailure 1

Hopefully this is the right list to report these things. Did I do
something wrong? Or is this a bug? Let me know if you need any more
information.