Resolving dependencies... Configuring ansi-terminal-0.6.2.3... Configuring ghc-paths-0.1.0.9... Building ansi-terminal-0.6.2.3... Installed ansi-terminal-0.6.2.3 Configuring haddock-library-1.4.2... Building ghc-paths-0.1.0.9... Building haddock-library-1.4.2... Configuring mtl-2.2.1... Installed ghc-paths-0.1.0.9 Building mtl-2.2.1... Configuring old-locale-1.0.0.7... Installed mtl-2.2.1 Building old-locale-1.0.0.7... Configuring network-2.6.3.1... Installed haddock-library-1.4.2 Configuring primitive-0.6.1.0... Installed old-locale-1.0.0.7 Building primitive-0.6.1.0... Building network-2.6.3.1... Configuring random-1.1... Installed primitive-0.6.1.0 Building random-1.1... Configuring stm-2.4.4.1... Installed random-1.1 Building stm-2.4.4.1... Configuring text-1.2.2.1... Installed network-2.6.3.1 Building text-1.2.2.1... Configuring transformers-compat-0.5.1.4... Installed stm-2.4.4.1 Building transformers-compat-0.5.1.4... Configuring ansi-wl-pprint-0.6.7.3... Installed transformers-compat-0.5.1.4 Building ansi-wl-pprint-0.6.7.3... Configuring zlib-0.6.1.2... Installed ansi-wl-pprint-0.6.7.3 Building zlib-0.6.1.2... Installed zlib-0.6.1.2 Configuring haddock-api-2.17.3... Building haddock-api-2.17.3... Configuring async-2.1.1... Failed to install haddock-api-2.17.3 Build log ( /home/builder/.cabal/logs/haddock-api-2.17.3.log ): cabal: Entering directory '/tmp/cabal-tmp-19647/haddock-api-2.17.3' Configuring haddock-api-2.17.3... Building haddock-api-2.17.3... Preprocessing library haddock-api-2.17.3... [ 1 of 38] Compiling Paths_haddock_api ( dist/build/autogen/Paths_haddock_api.hs, dist/build/Paths_haddock_api.o ) [ 2 of 38] Compiling Haddock.Version ( src/Haddock/Version.hs, dist/build/Haddock/Version.o ) [ 3 of 38] Compiling Haddock.Syb ( src/Haddock/Syb.hs, dist/build/Haddock/Syb.o ) [ 4 of 38] Compiling Haddock.Parser ( src/Haddock/Parser.hs, dist/build/Haddock/Parser.o ) [ 5 of 38] Compiling Haddock.GhcUtils ( src/Haddock/GhcUtils.hs, dist/build/Haddock/GhcUtils.o ) src/Haddock/GhcUtils.hs:20:1: warning: [-Wunused-imports] The import of ‘Data.Function’ is redundant except perhaps to import instances from ‘Data.Function’ To import instances alone, use: import Data.Function() src/Haddock/GhcUtils.hs:27:1: warning: [-Wunused-imports] The import of ‘RdrName’ is redundant except perhaps to import instances from ‘RdrName’ To import instances alone, use: import RdrName() src/Haddock/GhcUtils.hs:28:1: warning: [-Wunused-imports] The import of ‘GhcMonad’ is redundant except perhaps to import instances from ‘GhcMonad’ To import instances alone, use: import GhcMonad() src/Haddock/GhcUtils.hs:30:1: warning: [-Wunused-imports] The import of ‘UniqFM’ is redundant except perhaps to import instances from ‘UniqFM’ To import instances alone, use: import UniqFM() [ 6 of 38] Compiling Haddock.Backends.Xhtml.Types ( src/Haddock/Backends/Xhtml/Types.hs, dist/build/Haddock/Backends/Xhtml/Types.o ) [ 7 of 38] Compiling Haddock.Backends.Hyperlinker.Types ( src/Haddock/Backends/Hyperlinker/Types.hs, dist/build/Haddock/Backends/Hyperlinker/Types.o ) [ 8 of 38] Compiling Haddock.Types ( src/Haddock/Types.hs, dist/build/Haddock/Types.o ) src/Haddock/Types.hs:451:10: error: Duplicate instance declarations: instance NFData Name -- Defined at src/Haddock/Types.hs:451:10 instance NFData Name -- Defined in ‘Name’ src/Haddock/Types.hs:452:10: error: Duplicate instance declarations: instance NFData OccName -- Defined at src/Haddock/Types.hs:452:10 instance NFData OccName -- Defined in ‘OccName’ src/Haddock/Types.hs:453:10: error: Duplicate instance declarations: instance NFData ModuleName -- Defined at src/Haddock/Types.hs:453:10 instance NFData ModuleName -- Defined in ‘Module’ cabal: Leaving directory '/tmp/cabal-tmp-19647/haddock-api-2.17.3' Building async-2.1.1... Configuring vector-0.11.0.0... Installed text-1.2.2.1 Building vector-0.11.0.0... Configuring mmorph-1.0.9... Installed async-2.1.1 Building mmorph-1.0.9... Configuring exceptions-0.8.3... Installed mmorph-1.0.9 Building exceptions-0.8.3... Configuring optparse-applicative-0.12.1.0... Installed exceptions-0.8.3 Building optparse-applicative-0.12.1.0... Configuring transformers-base-0.4.4... Installed optparse-applicative-0.12.1.0 Building transformers-base-0.4.4... Installed transformers-base-0.4.4 Configuring blaze-builder-0.4.0.2... Building blaze-builder-0.4.0.2... Configuring hashable-1.2.4.0... Installed blaze-builder-0.4.0.2 Building hashable-1.2.4.0... Configuring direct-sqlite-2.3.18... Installed hashable-1.2.4.0 Building direct-sqlite-2.3.18... Configuring monad-control-1.0.1.0... Installed vector-0.11.0.0 Building monad-control-1.0.1.0... Configuring tagsoup-0.14... Installed monad-control-1.0.1.0 Building tagsoup-0.14... Installed direct-sqlite-2.3.18 Configuring case-insensitive-1.2.0.7... Configuring streaming-commons-0.1.16... Installed tagsoup-0.14 Building case-insensitive-1.2.0.7... Building streaming-commons-0.1.16... Configuring blaze-textual-0.2.1.0... Installed case-insensitive-1.2.0.7 Building blaze-textual-0.2.1.0... Configuring lifted-base-0.2.3.8... Installed blaze-textual-0.2.1.0 Building lifted-base-0.2.3.8... Configuring scientific-0.3.4.9... Installed streaming-commons-0.1.16 Building scientific-0.3.4.9... Configuring http-types-0.9.1... Installed lifted-base-0.2.3.8 Building http-types-0.9.1... Installed scientific-0.3.4.9 Configuring resourcet-1.1.8.1... Building resourcet-1.1.8.1... Configuring attoparsec-0.13.1.0... Installed http-types-0.9.1 Building attoparsec-0.13.1.0... Installed resourcet-1.1.8.1 Configuring conduit-1.2.8... Building conduit-1.2.8... Installed attoparsec-0.13.1.0 Configuring sqlite-simple-0.4.10.0... Building sqlite-simple-0.4.10.0... Installed conduit-1.2.8 Configuring conduit-extra-1.1.15... Building conduit-extra-1.1.15... Installed sqlite-simple-0.4.10.0 Installed conduit-extra-1.1.15 cabal: Error: some packages failed to install: haddock-api-2.17.3 failed during the building phase. The exception was: ExitFailure 1 haddocset-0.4.2 depends on haddock-api-2.17.3 which failed to install.