Resolving dependencies... Starting text-utils-0.1.1.0 Building text-utils-0.1.1.0 Failed to install text-utils-0.1.1.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/text-utils-0.1.1.0-67NahFRqE7xBLSsIxQws7j.log ): cabal: Entering directory '/tmp/cabal-tmp-6988/text-utils-0.1.1.0' Configuring text-utils-0.1.1.0... Preprocessing library for text-utils-0.1.1.0.. Building library for text-utils-0.1.1.0.. [1 of 3] Compiling Data.Text.KGrams ( src/Data/Text/KGrams.hs, dist/build/Data/Text/KGrams.o ) [2 of 3] Compiling Data.Text.ToFromText ( src/Data/Text/ToFromText.hs, dist/build/Data/Text/ToFromText.o ) src/Data/Text/ToFromText.hs:10:18: error: Not in scope: type constructor or class ‘MonadFail’ | 10 | fromText :: (MonadFail m, Monad m) => T.Text -> m a | ^^^^^^^^^ src/Data/Text/ToFromText.hs:12:45: error: Not in scope: type constructor or class ‘MonadFail’ | 12 | default fromText :: (Enum a, Bounded a, MonadFail m, Monad m) => T.Text -> m a | ^^^^^^^^^ src/Data/Text/ToFromText.hs:23:39: error: Not in scope: type constructor or class ‘MonadFail’ | 23 | fromTextHelper :: (Enum a, Bounded a, MonadFail m, Monad m) => (a -> T.Text) -> T.Text -> m a | ^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-6988/text-utils-0.1.1.0' cabal: Error: some packages failed to install: text-utils-0.1.1.0-67NahFRqE7xBLSsIxQws7j failed during the building phase. The exception was: ExitFailure 1