Resolving dependencies... Configuring base-orphans-0.5.4... Configuring mtl-2.2.1... Building base-orphans-0.5.4... Building mtl-2.2.1... Installed base-orphans-0.5.4 Configuring old-locale-1.0.0.7... Building old-locale-1.0.0.7... Configuring parallel-3.2.1.0... Installed old-locale-1.0.0.7 Building parallel-3.2.1.0... Configuring primitive-0.6.1.0... Installed mtl-2.2.1 Building primitive-0.6.1.0... Configuring prelude-extras-0.4.0.3... Installed parallel-3.2.1.0 Building prelude-extras-0.4.0.3... Configuring semigroups-0.18.2... Installed primitive-0.6.1.0 Building semigroups-0.18.2... Configuring reflection-2.1.2... Installed prelude-extras-0.4.0.3 Building reflection-2.1.2... Configuring stm-2.4.4.1... Installed semigroups-0.18.2 Building stm-2.4.4.1... Configuring syb-0.6... Installed stm-2.4.4.1 Building syb-0.6... Configuring transformers-compat-0.5.1.4... Installed reflection-2.1.2 Building transformers-compat-0.5.1.4... Configuring text-1.2.2.1... Installed transformers-compat-0.5.1.4 Building text-1.2.2.1... Installed syb-0.6 Configuring old-time-1.1.0.3... Building old-time-1.1.0.3... Configuring StateVar-1.1.0.4... Installed old-time-1.1.0.3 Building StateVar-1.1.0.4... Configuring vector-0.11.0.0... Installed StateVar-1.1.0.4 Building vector-0.11.0.0... Configuring exceptions-0.8.3... Installed text-1.2.2.1 Building exceptions-0.8.3... Configuring tagged-0.8.5... Installed exceptions-0.8.3 Building tagged-0.8.5... Installed tagged-0.8.5 Configuring parsec-3.1.11... Building parsec-3.1.11... Configuring hashable-1.2.4.0... Installed parsec-3.1.11 Building hashable-1.2.4.0... Configuring polyparse-1.12... Installed vector-0.11.0.0 Building polyparse-1.12... Configuring distributive-0.5.0.2... Installed hashable-1.2.4.0 Building distributive-0.5.0.2... Installed distributive-0.5.0.2 Configuring unordered-containers-0.2.7.1... Configuring void-0.7.1... Installed polyparse-1.12 Building unordered-containers-0.2.7.1... Building void-0.7.1... Installed void-0.7.1 Configuring contravariant-1.4... Building contravariant-1.4... Configuring cpphs-1.20.2... Installed contravariant-1.4 Building cpphs-1.20.2... Installed unordered-containers-0.2.7.1 Configuring comonad-5... Building comonad-5... Installed cpphs-1.20.2 Configuring uniplate-1.6.12... Building uniplate-1.6.12... Configuring haskell-src-exts-1.17.1... Installed comonad-5 Building haskell-src-exts-1.17.1... Installed uniplate-1.6.12 Configuring bifunctors-5.4.1... Building bifunctors-5.4.1... Installed bifunctors-5.4.1 Configuring profunctors-5.2... Building profunctors-5.2... Configuring semigroupoids-5.1... Installed profunctors-5.2 Building semigroupoids-5.1... Installed semigroupoids-5.1 Configuring free-4.12.4... Building free-4.12.4... Installed free-4.12.4 Configuring adjunctions-4.3... Building adjunctions-4.3... Installed adjunctions-4.3 Configuring kan-extensions-5.0.1... Building kan-extensions-5.0.1... Installed kan-extensions-5.0.1 Configuring lens-4.15.1... Building lens-4.15.1... Installed haskell-src-exts-1.17.1 Configuring derive-2.5.26... Building derive-2.5.26... Installed lens-4.15.1 Installed derive-2.5.26 Downloading language-eiffel-0.1... Configuring language-eiffel-0.1... Building language-eiffel-0.1... Failed to install language-eiffel-0.1 Build log ( /home/builder/.cabal/logs/language-eiffel-0.1.log ): cabal: Entering directory '/tmp/cabal-tmp-23353/language-eiffel-0.1' Configuring language-eiffel-0.1... Building language-eiffel-0.1... Preprocessing library language-eiffel-0.1... [ 1 of 15] Compiling Language.Eiffel.Position ( Language/Eiffel/Position.hs, dist/build/Language/Eiffel/Position.o ) Language/Eiffel/Position.hs:75:1: warning: [-Worphans] Orphan instance: instance Binary SourcePos To avoid this move the instance declaration to the module of the class or of the type, or wrap the type with a newtype and declare the instance on the new type. Language/Eiffel/Position.hs:87:1: warning: [-Worphans] Orphan instance: instance NFData SourcePos To avoid this move the instance declaration to the module of the class or of the type, or wrap the type with a newtype and declare the instance on the new type. [ 2 of 15] Compiling Language.Eiffel.Syntax ( Language/Eiffel/Syntax.hs, dist/build/Language/Eiffel/Syntax.o ) Language/Eiffel/Syntax.hs:404:10: error: Duplicate instance declarations: instance Binary Text -- Defined at Language/Eiffel/Syntax.hs:404:10 instance Binary Text -- Defined in ‘Data.Text’ cabal: Leaving directory '/tmp/cabal-tmp-23353/language-eiffel-0.1' cabal: Error: some packages failed to install: language-eiffel-0.1 failed during the building phase. The exception was: ExitFailure 1