Resolving dependencies... Downloading hasktags-0.67... Configuring hasktags-0.67... Building hasktags-0.67... Preprocessing executable 'hasktags' for hasktags-0.67... HaskTags.hs:1:1: Ambiguous module name ‘Prelude’: it was found in multiple packages: base haskell98-2.0.0.3 Failed to install hasktags-0.67 cabal: Error: some packages failed to install: hasktags-0.67 failed during the building phase. The exception was: ExitFailure 1