Resolving dependencies... Configuring control-monad-failure-0.5.0... Configuring failure-0.2.0.3... Building failure-0.2.0.3... Building control-monad-failure-0.5.0... Failed to install control-monad-failure-0.5.0 Build log ( /home/builder/.cabal/logs/control-monad-failure-0.5.0.log ): cabal: Entering directory '/tmp/cabal-tmp-1461/control-monad-failure-0.5.0' Configuring control-monad-failure-0.5.0... Building control-monad-failure-0.5.0... Preprocessing library control-monad-failure-0.5.0... [1 of 3] Compiling Control.Monad.Failure.Class ( Control/Monad/Failure/Class.hs, dist/build/Control/Monad/Failure/Class.o ) [2 of 3] Compiling Control.Monad.Failure.Transformers ( Control/Monad/Failure/Transformers.hs, dist/build/Control/Monad/Failure/Transformers.o ) Control/Monad/Failure/Transformers.hs:12:1: error: Failed to load interface for ‘Control.Monad.Trans’ Perhaps you meant Control.Monad.Fail (from base-4.9.0.0) Control.Monad.Trans.RWS (from transformers-0.5.2.0) Control.Monad.Fix (from base-4.9.0.0) cabal: Leaving directory '/tmp/cabal-tmp-1461/control-monad-failure-0.5.0' Configuring mtl-2.2.1... Building mtl-2.2.1... Configuring syb-0.6... Installed failure-0.2.0.3 Building syb-0.6... Configuring text-1.2.2.1... Installed mtl-2.2.1 Configuring safe-failure-0.5.0.2... Installed syb-0.6 Building text-1.2.2.1... Building safe-failure-0.5.0.2... Installed safe-failure-0.5.0.2 Installed text-1.2.2.1 Configuring tagsoup-0.14... Configuring parsec-3.1.11... Building parsec-3.1.11... Building tagsoup-0.14... Installed parsec-3.1.11 Configuring json-0.9.1... Building json-0.9.1... Installed tagsoup-0.14 Installed json-0.9.1 cabal: Error: some packages failed to install: authenticate-0.2.1 depends on control-monad-failure-0.5.0 which failed to install. control-monad-failure-0.5.0 failed during the building phase. The exception was: ExitFailure 1 http-wget-0.2.1 depends on control-monad-failure-0.5.0 which failed to install.