[Haskell-cafe] problem building array package

Building array from cabal with ghc6.6: ~/array-0.1.0.0$ runhaskell Setup.hs configure Configuring array-0.1.0.0... ~/array-0.1.0.0$ runhaskell Setup.hs build Preprocessing library array-0.1.0.0... Building array-0.1.0.0... [ 1 of 10] Compiling Data.Array.Base ( Data/Array/Base.hs, dist/build/Data/Array/Base.o ) Data/Array/Base.hs:391:23: Not in scope: `Arr.numElements' Data/Array/Base.hs:1067:35: Not in scope: `ArrST.numElementsSTArray' Data/Array/Base.hs:1079:51: Not in scope: `ArrST.numElementsSTArray' Any ideas why? Thanks, Jim