Resolving dependencies... Configuring mtl-2.2.1... Configuring parallel-3.2.1.0... Building mtl-2.2.1... Building parallel-3.2.1.0... Installed parallel-3.2.1.0 Configuring primitive-0.6.1.0... Building primitive-0.6.1.0... Configuring random-1.1... Installed mtl-2.2.1 Building random-1.1... Configuring split-0.2.3.1... Installed primitive-0.6.1.0 Building split-0.2.3.1... Configuring storable-complex-0.2.2... Installed random-1.1 Building storable-complex-0.2.2... Configuring transformers-compat-0.5.1.4... Installed storable-complex-0.2.2 Configuring text-1.2.2.1... Installed split-0.2.3.1 Building transformers-compat-0.5.1.4... Building text-1.2.2.1... Installed transformers-compat-0.5.1.4 Configuring vector-0.11.0.0... Building vector-0.11.0.0... Installed text-1.2.2.1 Configuring hashable-1.2.4.0... Building hashable-1.2.4.0... Installed hashable-1.2.4.0 Configuring constraints-0.8... Building constraints-0.8... Installed constraints-0.8 Configuring neural-network-base-0.1.0.0... Building neural-network-base-0.1.0.0... Installed vector-0.11.0.0 Configuring mwc-random-0.13.5.0... Building mwc-random-0.13.5.0... Configuring hmatrix-0.18.0.0... Installed neural-network-base-0.1.0.0 Building hmatrix-0.18.0.0... Installed mwc-random-0.13.5.0 Installed hmatrix-0.18.0.0 Configuring hmatrix-gsl-0.18.0.1... Building hmatrix-gsl-0.18.0.1... Installed hmatrix-gsl-0.18.0.1 Configuring neural-network-hmatrix-0.1.0.0... Building neural-network-hmatrix-0.1.0.0... Failed to install neural-network-hmatrix-0.1.0.0 Build log ( /home/builder/.cabal/logs/neural-network-hmatrix-0.1.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-18801/neural-network-hmatrix-0.1.0.0' Configuring neural-network-hmatrix-0.1.0.0... Building neural-network-hmatrix-0.1.0.0... Preprocessing library neural-network-hmatrix-0.1.0.0... [1 of 3] Compiling Data.NeuralNetwork.Backend.HMatrix.Utils ( Data/NeuralNetwork/Backend/HMatrix/Utils.hs, dist/build/Data/NeuralNetwork/Backend/HMatrix/Utils.o ) [2 of 3] Compiling Data.NeuralNetwork.Backend.HMatrix.Layers ( Data/NeuralNetwork/Backend/HMatrix/Layers.hs, dist/build/Data/NeuralNetwork/Backend/HMatrix/Layers.o ) Data/NeuralNetwork/Backend/HMatrix/Layers.hs:227:86: error: Variable not in scope: hadamard :: c R -> c R -> c R cabal: Leaving directory '/tmp/cabal-tmp-18801/neural-network-hmatrix-0.1.0.0' cabal: Error: some packages failed to install: neural-network-hmatrix-0.1.0.0 failed during the building phase. The exception was: ExitFailure 1