Resolving dependencies...
Downloading hasktags-0.68.1...
Configuring hasktags-0.68.1...
Building hasktags-0.68.1...
Preprocessing executable 'hasktags' for hasktags-0.68.1...

hasktags.hs:1:1:
    Ambiguous module name `Prelude':
      it was found in multiple packages: base haskell98-2.0.0.2
Failed to install hasktags-0.68.1
cabal: Error: some packages failed to install:
hasktags-0.68.1 failed during the building phase. The exception was:
ExitFailure 1