Resolving dependencies...
[1 of 1] Compiling Main             ( /tmp/FiniteMap-0.1-8692/FiniteMap-0.1/Setup.lhs, /tmp/FiniteMap-0.1-8692/FiniteMap-0.1/dist/setup/Main.o )
Linking /tmp/FiniteMap-0.1-8692/FiniteMap-0.1/dist/setup/setup ...
Configuring FiniteMap-0.1...
Warning: No 'build-type' specified. If you do not need a custom Setup.hs or
./configure script then use 'build-type: Simple'.
Building FiniteMap-0.1...
Preprocessing library FiniteMap-0.1...

Data/FiniteMap.lhs:1:1:
    Ambiguous module name `Prelude':
      it was found in multiple packages: base haskell98-2.0.0.2
Failed to install FiniteMap-0.1
cabal: Error: some packages failed to install:
FiniteMap-0.1 failed during the building phase. The exception was:
ExitFailure 1
mage-1.0 depends on FiniteMap-0.1 which failed to install.