Resolving dependencies... Configuring trhsx-0.2.2... Building trhsx-0.2.2... Failed to install trhsx-0.2.2 Build log ( /home/builder/.cabal/logs/trhsx-0.2.2.log ): cabal: Entering directory '/tmp/cabal-tmp-8245/trhsx-0.2.2' Configuring trhsx-0.2.2... Building trhsx-0.2.2... Preprocessing library trhsx-0.2.2... [1 of 1] Compiling Trhsx ( Trhsx.hs, dist/build/Trhsx.o ) Trhsx.hs:1:8: 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-8245/trhsx-0.2.2' cabal: Error: some packages failed to install: trhsx-0.2.2 failed during the building phase. The exception was: ExitFailure 1