Resolving dependencies... Configuring scan-vector-machine-0.0.1... Building scan-vector-machine-0.0.1... Failed to install scan-vector-machine-0.0.1 Build log ( /home/builder/.cabal/logs/scan-vector-machine-0.0.1.log ): cabal: Entering directory '/tmp/cabal-tmp-16072/scan-vector-machine-0.0.1' Configuring scan-vector-machine-0.0.1... Building scan-vector-machine-0.0.1... Preprocessing library scan-vector-machine-0.0.1... [1 of 1] Compiling ScanVectorMachine ( ScanVectorMachine.hs, dist/build/ScanVectorMachine.o ) ScanVectorMachine.hs:2:8: error: Failed to load interface for ‘Prelude’ It is a member of the hidden package ‘base-4.9.0.0’. Perhaps you need to add ‘base’ to the build-depends in your .cabal file. Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-16072/scan-vector-machine-0.0.1' cabal: Error: some packages failed to install: scan-vector-machine-0.0.1 failed during the building phase. The exception was: ExitFailure 1