Resolving dependencies... Warning: The following packages are likely to be broken by the reinstalls: ghc-8.0.1.20161018 Cabal-1.24.0.0 Continuing even though the plan contains dangerous reinstalls. Configuring mtl-2.2.1... Configuring stm-2.4.4.1... Building stm-2.4.4.1... Building mtl-2.2.1... Installed stm-2.4.4.1 Configuring text-1.2.2.1... Building text-1.2.2.1... Configuring transformers-compat-0.5.1.4... Installed mtl-2.2.1 Building transformers-compat-0.5.1.4... Configuring time-1.5.0.1... Installed transformers-compat-0.5.1.4 Building time-1.5.0.1... Configuring async-2.1.1... Installed time-1.5.0.1 Building async-2.1.1... Installed async-2.1.1 Configuring exceptions-0.8.3... Building exceptions-0.8.3... Configuring transformers-base-0.4.4... Installed text-1.2.2.1 Building transformers-base-0.4.4... Configuring unix-2.7.2.1... Installed transformers-base-0.4.4 Installed exceptions-0.8.3 Configuring hashable-1.2.4.0... Building hashable-1.2.4.0... Configuring system-filepath-0.4.13.4... Installed hashable-1.2.4.0 Building unix-2.7.2.1... Building system-filepath-0.4.13.4... Configuring monad-control-1.0.1.0... Installed system-filepath-0.4.13.4 Building monad-control-1.0.1.0... Installed monad-control-1.0.1.0 Configuring lifted-base-0.2.3.8... Building lifted-base-0.2.3.8... Configuring constraints-0.8... Installed lifted-base-0.2.3.8 Building constraints-0.8... Configuring enclosed-exceptions-1.0.2... Installed unix-2.7.2.1 Building enclosed-exceptions-1.0.2... Installed enclosed-exceptions-1.0.2 Configuring system-fileio-0.3.16.3... Building system-fileio-0.3.16.3... Configuring directory-1.2.7.1... Installed constraints-0.8 Building directory-1.2.7.1... Configuring unix-compat-0.4.2.0... Installed system-fileio-0.3.16.3 Building unix-compat-0.4.2.0... Configuring lifted-async-0.9.0... Installed unix-compat-0.4.2.0 Installed directory-1.2.7.1 Configuring process-1.4.2.0... Building lifted-async-0.9.0... Building process-1.4.2.0... Installed lifted-async-0.9.0 Installed process-1.4.2.0 Configuring shelly-1.6.4.1... Building shelly-1.6.4.1... Failed to install shelly-1.6.4.1 Build log ( /home/builder/.cabal/logs/shelly-1.6.4.1.log ): cabal: Entering directory '/tmp/cabal-tmp-25114/shelly-1.6.4.1' Configuring shelly-1.6.4.1... Building shelly-1.6.4.1... Preprocessing library shelly-1.6.4.1... [1 of 6] Compiling Shelly.Base ( src/Shelly/Base.hs, dist/build/Shelly/Base.o ) src/Shelly/Base.hs:39:1: warning: [-Wunused-imports] The import of ‘ProcessHandle’ from module ‘System.Process’ is redundant src/Shelly/Base.hs:42:1: warning: [-Wunused-imports] The import of ‘liftM’ from module ‘Control.Monad’ is redundant [2 of 6] Compiling Shelly.Find ( src/Shelly/Find.hs, dist/build/Shelly/Find.o ) src/Shelly/Find.hs:67:5: warning: [-Wname-shadowing] This binding for ‘traverse’ shadows the existing binding imported from ‘Prelude’ at src/Shelly/Find.hs:11:1-32 (and originally defined in ‘Data.Traversable’) [3 of 6] Compiling Shelly ( src/Shelly.hs, dist/build/Shelly.o ) src/Shelly.hs:128:1: warning: [-Wunused-imports] The import of ‘Monoid’ from module ‘Data.Monoid’ is redundant src/Shelly.hs:320:13: warning: [-Wunused-matches] Defined but not used: ‘fp’ src/Shelly.hs:375:5: warning: [-Wincomplete-patterns] Pattern match(es) are non-exhaustive In an equation for ‘toHandle’: Patterns not matched: (Just NoStream) [4 of 6] Compiling Shelly.Lifted ( src/Shelly/Lifted.hs, dist/build/Shelly/Lifted.o ) src/Shelly/Lifted.hs:103:1: warning: [-Wunused-imports] The import of ‘Data.Monoid’ is redundant except perhaps to import instances from ‘Data.Monoid’ To import instances alone, use: import Data.Monoid() src/Shelly/Lifted.hs:116:1: warning: [-Wdeprecations] Module ‘Control.Monad.Trans.Error’ is deprecated: Use Control.Monad.Trans.Except instead src/Shelly/Lifted.hs:141:11: warning: [-Wdeprecations] In the use of type constructor or class ‘Error’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:141:43: warning: [-Wdeprecations] In the use of type constructor or class ‘ErrorT’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:142:16: warning: [-Wdeprecations] In the use of data constructor ‘ErrorT’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:241:29: warning: [-Wdeprecations] In the use of type constructor or class ‘Error’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:242:29: warning: [-Wdeprecations] In the use of type constructor or class ‘ErrorT’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:243:18: warning: [-Wdeprecations] In the use of type constructor or class ‘ErrorT’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:245:9: warning: [-Wdeprecations] In the use of data constructor ‘ErrorT’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:246:41: warning: [-Wdeprecations] In the use of ‘runErrorT’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" src/Shelly/Lifted.hs:247:31: warning: [-Wdeprecations] In the use of data constructor ‘ErrorT’ (imported from Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" [5 of 6] Compiling Shelly.Pipe ( src/Shelly/Pipe.hs, dist/build/Shelly/Pipe.o ) src/Shelly/Pipe.hs:122:1: error: • The default type ‘Text’ is not an instance of ‘Num’ • When checking the types in a default declaration cabal: Leaving directory '/tmp/cabal-tmp-25114/shelly-1.6.4.1' cabal: Error: some packages failed to install: shelly-1.6.4.1 failed during the building phase. The exception was: ExitFailure 1