Resolving dependencies... Downloading data-tensor-0.1.0.0... Configuring data-tensor-0.1.0.0... Building data-tensor-0.1.0.0... Preprocessing library data-tensor-0.1.0.0... [1 of 1] Compiling Data.Tensor ( src/Data/Tensor.hs, dist/build/Data/Tensor.o ) In-place registering data-tensor-0.1.0.0... Running Haddock for data-tensor-0.1.0.0... cabal: Haddock's internal GHC version must match the configured GHC version. The GHC version is 7.10.2 but haddock is using GHC version 7.8.3 Creating package registration file: /tmp/pkgConf-data-tensor-0.1.0278722862233665123.0 Installing library in /home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-7.10.2/data-tensor-0.1.0.0-59HYpkK00i1ENdAiDEGacc Registering data-tensor-0.1.0.0... Installed data-tensor-0.1.0.0