Resolving dependencies... Configuring split-0.2.3.1... Configuring safe-0.3.10... Building safe-0.3.10... Building split-0.2.3.1... Installed split-0.2.3.1 Installed safe-0.3.10 Downloading Tic-Tac-Toe-0.1.0.0... Configuring Tic-Tac-Toe-0.1.0.0... Building Tic-Tac-Toe-0.1.0.0... Failed to install Tic-Tac-Toe-0.1.0.0 Build log ( /home/builder/.cabal/logs/Tic-Tac-Toe-0.1.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-18339/Tic-Tac-Toe-0.1.0.0' Configuring Tic-Tac-Toe-0.1.0.0... Building Tic-Tac-Toe-0.1.0.0... Preprocessing executable 'Tic-Tac-Toe' for Tic-Tac-Toe-0.1.0.0... [1 of 1] Compiling Main ( src/Main.hs, dist/build/Tic-Tac-Toe/Tic-Tac-Toe-tmp/Main.o ) src/Main.hs:3:1: error: Failed to load interface for ‘TicTacToe’ Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-18339/Tic-Tac-Toe-0.1.0.0' cabal: Error: some packages failed to install: Tic-Tac-Toe-0.1.0.0 failed during the building phase. The exception was: ExitFailure 1