Resolving dependencies... Configuring mtl-2.2.1... Configuring parallel-3.2.1.0... Building mtl-2.2.1... Building parallel-3.2.1.0... Installed parallel-3.2.1.0 Configuring primitive-0.6.2.0... Building primitive-0.6.2.0... Configuring random-1.1... Installed mtl-2.2.1 Building random-1.1... Configuring text-1.2.2.1... Installed random-1.1 Building text-1.2.2.1... Configuring regex-base-0.93.2... Installed primitive-0.6.2.0 Building regex-base-0.93.2... Configuring tf-random-0.5... Installed regex-base-0.93.2 Building tf-random-0.5... Installed tf-random-0.5 Configuring QuickCheck-2.9.2... Building QuickCheck-2.9.2... Installed text-1.2.2.1 Configuring parsec-3.1.11... Building parsec-3.1.11... Installed parsec-3.1.11 Installed QuickCheck-2.9.2 Configuring bitset-1.1... Building bitset-1.1... Installed bitset-1.1 Downloading regex-deriv-0.0.2... Configuring regex-deriv-0.0.2... Building regex-deriv-0.0.2... Failed to install regex-deriv-0.0.2 Build log ( /home/builder/.cabal/logs/regex-deriv-0.0.2.log ): cabal: Entering directory '/tmp/cabal-tmp-12350/regex-deriv-0.0.2' Configuring regex-deriv-0.0.2... Warning: 'ghc-options: -threaded' has no effect for libraries. It should only be used for executables. Building regex-deriv-0.0.2... Preprocessing library regex-deriv-0.0.2... [ 1 of 11] Compiling Text.Regex.Deriv.Word ( Text/Regex/Deriv/Word.lhs, dist/build/Text/Regex/Deriv/Word.o ) [ 2 of 11] Compiling Text.Regex.Deriv.Pretty ( Text/Regex/Deriv/Pretty.lhs, dist/build/Text/Regex/Deriv/Pretty.o ) [ 3 of 11] Compiling Text.Regex.Deriv.ExtPattern ( Text/Regex/Deriv/ExtPattern.lhs, dist/build/Text/Regex/Deriv/ExtPattern.o ) [ 4 of 11] Compiling Text.Regex.Deriv.Dictionary ( Text/Regex/Deriv/Dictionary.hs, dist/build/Text/Regex/Deriv/Dictionary.o ) Text/Regex/Deriv/Dictionary.hs:61:1: warning: [-Wtabs] Tab character found here, and in 32 further locations. Please use spaces instead. [ 5 of 11] Compiling Text.Regex.Deriv.Common ( Text/Regex/Deriv/Common.lhs, dist/build/Text/Regex/Deriv/Common.o ) [ 6 of 11] Compiling Text.Regex.Deriv.RE ( Text/Regex/Deriv/RE.lhs, dist/build/Text/Regex/Deriv/RE.o ) [ 7 of 11] Compiling Text.Regex.Deriv.IntPattern ( Text/Regex/Deriv/IntPattern.lhs, dist/build/Text/Regex/Deriv/IntPattern.o ) Text/Regex/Deriv/IntPattern.lhs:92:7: warning: [-Woverlapping-patterns] Pattern match is redundant In an equation for ‘hash’: hash p = ... [ 8 of 11] Compiling Text.Regex.Deriv.Translate ( Text/Regex/Deriv/Translate.lhs, dist/build/Text/Regex/Deriv/Translate.o ) [ 9 of 11] Compiling Text.Regex.Deriv.Parse ( Text/Regex/Deriv/Parse.lhs, dist/build/Text/Regex/Deriv/Parse.o ) [10 of 11] Compiling Text.Regex.Deriv.ByteString.Posix ( Text/Regex/Deriv/ByteString/Posix.lhs, dist/build/Text/Regex/Deriv/ByteString/Posix.o ) Text/Regex/Deriv/ByteString/Posix.lhs:664:33: error: Ambiguous occurrence ‘Word’ It could refer to either ‘Prelude.Word’, imported from ‘Prelude’ at Text/Regex/Deriv/ByteString/Posix.lhs:14:10-42 (and originally defined in ‘GHC.Types’) or ‘Text.Regex.Deriv.ByteString.Posix.Word’, defined at Text/Regex/Deriv/ByteString/Posix.lhs:662:3 Text/Regex/Deriv/ByteString/Posix.lhs:685:91: error: Ambiguous occurrence ‘Word’ It could refer to either ‘Prelude.Word’, imported from ‘Prelude’ at Text/Regex/Deriv/ByteString/Posix.lhs:14:10-42 (and originally defined in ‘GHC.Types’) or ‘Text.Regex.Deriv.ByteString.Posix.Word’, defined at Text/Regex/Deriv/ByteString/Posix.lhs:662:3 Text/Regex/Deriv/ByteString/Posix.lhs:839:97: error: Ambiguous occurrence ‘Word’ It could refer to either ‘Prelude.Word’, imported from ‘Prelude’ at Text/Regex/Deriv/ByteString/Posix.lhs:14:10-42 (and originally defined in ‘GHC.Types’) or ‘Text.Regex.Deriv.ByteString.Posix.Word’, defined at Text/Regex/Deriv/ByteString/Posix.lhs:662:3 Text/Regex/Deriv/ByteString/Posix.lhs:884:97: error: Ambiguous occurrence ‘Word’ It could refer to either ‘Prelude.Word’, imported from ‘Prelude’ at Text/Regex/Deriv/ByteString/Posix.lhs:14:10-42 (and originally defined in ‘GHC.Types’) or ‘Text.Regex.Deriv.ByteString.Posix.Word’, defined at Text/Regex/Deriv/ByteString/Posix.lhs:662:3 cabal: Leaving directory '/tmp/cabal-tmp-12350/regex-deriv-0.0.2' cabal: Error: some packages failed to install: regex-deriv-0.0.2 failed during the building phase. The exception was: ExitFailure 1