Resolving dependencies... Configuring mtl-2.2.1... Configuring old-locale-1.0.0.7... Building old-locale-1.0.0.7... Building mtl-2.2.1... Installed old-locale-1.0.0.7 Configuring old-time-1.1.0.3... Building old-time-1.1.0.3... Installed mtl-2.2.1 Installed old-time-1.1.0.3 Configuring takusen-oracle-0.9.3... Failed to install takusen-oracle-0.9.3 Build log ( /home/builder/.cabal/logs/takusen-oracle-0.9.3.log ): cabal: Entering directory '/tmp/cabal-tmp-1021/takusen-oracle-0.9.3' [1 of 1] Compiling Main ( /tmp/cabal-tmp-1021/takusen-oracle-0.9.3/dist/setup/setup.hs, /tmp/cabal-tmp-1021/takusen-oracle-0.9.3/dist/setup/Main.o ) Linking /tmp/cabal-tmp-1021/takusen-oracle-0.9.3/dist/setup/setup ... Configuring takusen-oracle-0.9.3... Warning: 'ghc-options: -prof' is not necessary and will lead to problems when used on a library. Use the configure flag --enable-library-profiling and/or --enable-profiling. setup: The program 'sqlplus' is required but it could not be found. cabal: Leaving directory '/tmp/cabal-tmp-1021/takusen-oracle-0.9.3' cabal: Error: some packages failed to install: takusen-oracle-0.9.3 failed during the configure step. The exception was: ExitFailure 1