Resolving dependencies... Configuring finite-typelits-0.1.4.1... Building finite-typelits-0.1.4.1... Failed to install finite-typelits-0.1.4.1 Build log ( /home/builder/.cabal/logs/ghc-8.4.3/finite-typelits-0.1.4.1-9XUlK617ybI3SIbBXAeruD.log ): cabal: Entering directory '/tmp/cabal-tmp-16526/finite-typelits-0.1.4.1' Configuring finite-typelits-0.1.4.1... Preprocessing library for finite-typelits-0.1.4.1.. Building library for finite-typelits-0.1.4.1.. [1 of 2] Compiling Data.Finite.Internal ( src/Data/Finite/Internal.hs, dist/build/Data/Finite/Internal.o ) src/Data/Finite/Internal.hs:96:10: error: • No instance for (GHC.Generics.Generic (Finite n)) arising from a use of ‘Control.DeepSeq.$dmrnf’ • In the expression: Control.DeepSeq.$dmrnf @(Finite n) In an equation for ‘rnf’: rnf = Control.DeepSeq.$dmrnf @(Finite n) In the instance declaration for ‘NFData (Finite n)’ | 96 | instance NFData (Finite n) | ^^^^^^^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-16526/finite-typelits-0.1.4.1' cabal: Error: some packages failed to install: finite-typelits-0.1.4.1-9XUlK617ybI3SIbBXAeruD failed during the building phase. The exception was: ExitFailure 1