Resolving dependencies... Configuring colour-2.3.6... Preprocessing library for colour-2.3.6.. Building library for colour-2.3.6.. [ 1 of 14] Compiling Data.Colour.CIE.Chromaticity ( Data/Colour/CIE/Chromaticity.hs, dist/build/Data/Colour/CIE/Chromaticity.o, dist/build/Data/Colour/CIE/Chromaticity.dyn_o ) [ 2 of 14] Compiling Data.Colour.CIE.Illuminant ( Data/Colour/CIE/Illuminant.hs, dist/build/Data/Colour/CIE/Illuminant.o, dist/build/Data/Colour/CIE/Illuminant.dyn_o ) [ 3 of 14] Compiling Data.Colour.Chan ( Data/Colour/Chan.hs, dist/build/Data/Colour/Chan.o, dist/build/Data/Colour/Chan.dyn_o ) [ 4 of 14] Compiling Data.Colour.Internal ( Data/Colour/Internal.hs, dist/build/Data/Colour/Internal.o, dist/build/Data/Colour/Internal.dyn_o ) [ 5 of 14] Compiling Data.Colour.Matrix ( Data/Colour/Matrix.hs, dist/build/Data/Colour/Matrix.o, dist/build/Data/Colour/Matrix.dyn_o ) [ 6 of 14] Compiling Data.Colour.RGB ( Data/Colour/RGB.hs, dist/build/Data/Colour/RGB.o, dist/build/Data/Colour/RGB.dyn_o ) [ 7 of 14] Compiling Data.Colour.RGBSpace.HSL ( Data/Colour/RGBSpace/HSL.hs, dist/build/Data/Colour/RGBSpace/HSL.o, dist/build/Data/Colour/RGBSpace/HSL.dyn_o ) [ 8 of 14] Compiling Data.Colour.RGBSpace.HSV ( Data/Colour/RGBSpace/HSV.hs, dist/build/Data/Colour/RGBSpace/HSV.o, dist/build/Data/Colour/RGBSpace/HSV.dyn_o ) [ 9 of 14] Compiling Data.Colour.SRGB.Linear ( Data/Colour/SRGB/Linear.hs, dist/build/Data/Colour/SRGB/Linear.o, dist/build/Data/Colour/SRGB/Linear.dyn_o ) [10 of 14] Compiling Data.Colour.RGBSpace ( Data/Colour/RGBSpace.hs, dist/build/Data/Colour/RGBSpace.o, dist/build/Data/Colour/RGBSpace.dyn_o ) [11 of 14] Compiling Data.Colour.SRGB ( Data/Colour/SRGB.hs, dist/build/Data/Colour/SRGB.o, dist/build/Data/Colour/SRGB.dyn_o ) Data/Colour/SRGB.hs:117:8: warning: [GHC-63394] [-Wx-partial] In the use of head (imported from Prelude, but defined in GHC.List): "This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty." | 117 | x' | head x == '#' = tail x | ^^^^ Data/Colour/SRGB.hs:117:24: warning: [GHC-63394] [-Wx-partial] In the use of tail (imported from Prelude, but defined in GHC.List): "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty." | 117 | x' | head x == '#' = tail x | ^^^^ Data/Colour/SRGB.hs:127:50: warning: [GHC-63394] [-Wx-partial] In the use of head (imported from Prelude, but defined in GHC.List): "This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty." | 127 | sRGB24read x | length rx /= 1 || not (null (snd (head rx))) = | ^^^^ Data/Colour/SRGB.hs:129:33: warning: [GHC-63394] [-Wx-partial] In the use of head (imported from Prelude, but defined in GHC.List): "This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty." | 129 | | otherwise = fst (head rx) | ^^^^ [12 of 14] Compiling Data.Colour ( Data/Colour.hs, dist/build/Data/Colour.o, dist/build/Data/Colour.dyn_o ) [13 of 14] Compiling Data.Colour.Names ( Data/Colour/Names.hs, dist/build/Data/Colour/Names.o, dist/build/Data/Colour/Names.dyn_o ) [14 of 14] Compiling Data.Colour.CIE ( Data/Colour/CIE.hs, dist/build/Data/Colour/CIE.o, dist/build/Data/Colour/CIE.dyn_o ) ghc-9.8.4: can't find a package database at /home/bgamari/build-cache/tmp-install/packages.db Failed to install colour-2.3.6 Error: cabal: Some packages failed to install: ac-library-hs-1.3.0.1-3cGJ67UwbyWKCsFs4wFZFZ depends on ac-library-hs-1.3.0.1 which failed to install. ansi-terminal-1.1.2-KWBmkVsQRP67S2vyas6OZS depends on ansi-terminal-1.1.2 which failed to install. ansi-terminal-types-1.1-HAQdkxzoxfTLgP68NcEWOX depends on ansi-terminal-types-1.1 which failed to install. bitvec-1.1.5.0-3yJHw2Pvt3qEdX5YipxJ43 depends on bitvec-1.1.5.0 which failed to install. colour-2.3.6-JegldMtiv9a8c4VaIBFkGx failed during the building phase. The exception was: ExitFailure 1 optparse-applicative-0.18.1.0-4WRf5bX1TuC4wIXAa7SFmd depends on optparse-applicative-0.18.1.0 which failed to install. prettyprinter-ansi-terminal-1.1.3-3IKBFxwvUG73SAVQBEr9gK depends on prettyprinter-ansi-terminal-1.1.3 which failed to install. tasty-1.5.3-CPJIcYGrBgy4e7heJRxm0o depends on tasty-1.5.3 which failed to install. vector-0.13.2.0-93eTDDTriN7IxWD26XnCjR depends on vector-0.13.2.0 which failed to install. vector-algorithms-0.9.1.0-6DmHa7VNWXNCHPKQITYpG2 depends on vector-algorithms-0.9.1.0 which failed to install. rm: cannot remove 'cabal-config.W0Z': No such file or directory