Resolving dependencies... Configuring colour-2.3.4... Configuring blaze-builder-0.4.1.0... Building colour-2.3.4... Building blaze-builder-0.4.1.0... Installed blaze-builder-0.4.1.0 Configuring data-default-class-0.1.2.0... Building data-default-class-0.1.2.0... Installed data-default-class-0.1.2.0 Configuring blaze-markup-0.8.2.1... Building blaze-markup-0.8.2.1... Installed colour-2.3.4 Installed blaze-markup-0.8.2.1 Configuring blaze-svg-0.3.6.1... Building blaze-svg-0.3.6.1... Installed blaze-svg-0.3.6.1 Configuring plot-light-0.3.3... Building plot-light-0.3.3... Failed to install plot-light-0.3.3 Build log ( /home/builder/.cabal/logs/ghc-8.2.2/plot-light-0.3.3-BItnXlttYZo9YsmZSKB4x3.log ): cabal: Entering directory '/tmp/cabal-tmp-5279/plot-light-0.3.3' Configuring plot-light-0.3.3... Preprocessing library for plot-light-0.3.3.. Building library for plot-light-0.3.3.. [ 1 of 13] Compiling Data.Parsers ( src/Data/Parsers.hs, dist/build/Data/Parsers.o ) [ 2 of 13] Compiling Graphics.Rendering.Plot.Light.Internal.Geometry ( src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs, dist/build/Graphics/Rendering/Plot/Light/Internal/Geometry.o ) src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:129:21: error: Not in scope: type constructor or class ‘Semigroup’ Perhaps you want to add ‘Semigroup’ to the import list in the import of ‘Data.Semigroup’ (src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:42:1-24). | 129 | instance (Ord a) => Semigroup (Frame a) where | ^^^^^^^^^ src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:239:19: error: Not in scope: type constructor or class ‘Semigroup’ Perhaps you want to add ‘Semigroup’ to the import list in the import of ‘Data.Semigroup’ (src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:42:1-24). | 239 | instance Num a => Semigroup (V2 a) where | ^^^^^^^^^ src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:328:19: error: Not in scope: type constructor or class ‘Semigroup’ Perhaps you want to add ‘Semigroup’ to the import list in the import of ‘Data.Semigroup’ (src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:42:1-24). | 328 | instance Num a => Semigroup (DiagMat2 a) where | ^^^^^^^^^ src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:335:19: error: Not in scope: type constructor or class ‘Semigroup’ Perhaps you want to add ‘Semigroup’ to the import list in the import of ‘Data.Semigroup’ (src/Graphics/Rendering/Plot/Light/Internal/Geometry.hs:42:1-24). | 335 | instance Num a => Semigroup (Mat2 a) where | ^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-5279/plot-light-0.3.3' cabal: Error: some packages failed to install: plot-light-0.3.3-BItnXlttYZo9YsmZSKB4x3 failed during the building phase. The exception was: ExitFailure 1