Resolving dependencies... Downloading timeless-0.8.0.2... Configuring timeless-0.8.0.2... Building timeless-0.8.0.2... Failed to install timeless-0.8.0.2 Build log ( /home/builder/.cabal/logs/timeless-0.8.0.2.log ): cabal: Entering directory '/tmp/cabal-tmp-8591/timeless-0.8.0.2' Configuring timeless-0.8.0.2... Building timeless-0.8.0.2... Preprocessing library timeless-0.8.0.2... src/FRP/Timeless/Tutorial.lhs line 1: unlit: Program line next to comment src/FRP/Timeless/Tutorial.lhs line 3: unlit: Program line next to comment `unlit' failed in phase `Literate pre-processor'. (Exit code: 1) cabal: Leaving directory '/tmp/cabal-tmp-8591/timeless-0.8.0.2' cabal: Error: some packages failed to install: timeless-0.8.0.2 failed during the building phase. The exception was: ExitFailure 1