Resolving dependencies... Configuring labeled-tree-1.0.0.0... Building labeled-tree-1.0.0.0... Preprocessing library labeled-tree-1.0.0.0... [1 of 1] Compiling Data.LabeledTree ( Data/LabeledTree.hs, dist/build/Data/LabeledTree.o ) In-place registering labeled-tree-1.0.0.0... Running Haddock for labeled-tree-1.0.0.0... 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-labeled-tree-1.0.0336465782861021530.0 Installing library in /home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-7.10.2/labeled-tree-1.0.0.0-CeYkwLKmN1eKs5MQQEq3Wi Registering labeled-tree-1.0.0.0... Installed labeled-tree-1.0.0.0 Configuring labeled-graph-1.0.0.0... Building labeled-graph-1.0.0.0... Preprocessing library labeled-graph-1.0.0.0... Data/LabeledGraph.hs:21:8: File name does not match module name: Saw: ‘Data.Graph’ Expected: ‘Data.LabeledGraph’ Failed to install labeled-graph-1.0.0.0 cabal: Error: some packages failed to install: labeled-graph-1.0.0.0 failed during the building phase. The exception was: ExitFailure 1