Resolving dependencies... Downloading SDL-0.5.1... Configuring SDL-0.5.1... Failed to install SDL-0.5.1 Build log ( /home/builder/.cabal/logs/SDL-0.5.1.log ): cabal: Entering directory '/tmp/cabal-tmp-8114/SDL-0.5.1' [1 of 1] Compiling Main ( /tmp/cabal-tmp-8114/SDL-0.5.1/dist/setup/setup.hs, /tmp/cabal-tmp-8114/SDL-0.5.1/dist/setup/Main.o ) Linking /tmp/cabal-tmp-8114/SDL-0.5.1/dist/setup/setup ... Warning: defaultUserHooks in Setup script is deprecated. Configuring SDL-0.5.1... Warning: No 'build-type' specified. If you do not need a custom Setup.hs or ./configure script then use 'build-type: Simple'. configure: error: cannot find sources (includes/HsSDLConfig.h.in) in . or .. cabal: Leaving directory '/tmp/cabal-tmp-8114/SDL-0.5.1' cabal: Error: some packages failed to install: SDL-0.5.1 failed during the configure step. The exception was: ExitFailure 1