Resolving dependencies... Configuring text-1.2.2.1... Building text-1.2.2.1... Installed text-1.2.2.1 Configuring prizm-0.2.1.0... Building prizm-0.2.1.0... Failed to install prizm-0.2.1.0 Build log ( /home/builder/.cabal/logs/prizm-0.2.1.0.log ): cabal: Entering directory '/tmp/cabal-tmp-10130/prizm-0.2.1.0' Configuring prizm-0.2.1.0... Building prizm-0.2.1.0... Preprocessing library prizm-0.2.1.0... [1 of 7] Compiling Data.Prizm.Types ( src/Data/Prizm/Types.hs, dist/build/Data/Prizm/Types.o ) src/Data/Prizm/Types.hs:3:1: warning: [-Wunused-imports] The import of ‘Control.Applicative’ is redundant except perhaps to import instances from ‘Control.Applicative’ To import instances alone, use: import Control.Applicative() [2 of 7] Compiling Data.Prizm.Color.Transform ( src/Data/Prizm/Color/Transform.hs, dist/build/Data/Prizm/Color/Transform.o ) [3 of 7] Compiling Data.Prizm.Color.Matrices.XYZ ( src/Data/Prizm/Color/Matrices/XYZ.hs, dist/build/Data/Prizm/Color/Matrices/XYZ.o ) [4 of 7] Compiling Data.Prizm.Color.Matrices.RGB ( src/Data/Prizm/Color/Matrices/RGB.hs, dist/build/Data/Prizm/Color/Matrices/RGB.o ) [5 of 7] Compiling Data.Prizm.Color.SRGB ( src/Data/Prizm/Color/SRGB.hs, dist/build/Data/Prizm/Color/SRGB.o ) [6 of 7] Compiling Data.Prizm.Color.CIE ( src/Data/Prizm/Color/CIE.hs, dist/build/Data/Prizm/Color/CIE.o ) src/Data/Prizm/Color/CIE.hs:13:1: error: Failed to load interface for ‘Data.Angle’ Perhaps you meant Data.Tuple (from base-4.9.0.0) Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-10130/prizm-0.2.1.0' cabal: Error: some packages failed to install: prizm-0.2.1.0 failed during the building phase. The exception was: ExitFailure 1