haskell-src-exts fails to install with missing dependencies

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.