Resolving dependencies...
Downloading SDL-0.5.4...
[1 of 1] Compiling Main             ( /tmp/SDL-0.5.4-7638/SDL-0.5.4/Setup.lhs, /tmp/SDL-0.5.4-7638/SDL-0.5.4/dist/setup/Main.o )

/tmp/SDL-0.5.4-7638/SDL-0.5.4/Setup.lhs:4:31: Warning:
    In the use of `defaultUserHooks'
    (imported from Distribution.Simple):
    Deprecated: "Use simpleUserHooks or autoconfUserHooks, unless you need Cabal-1.2
             compatibility in which case you must stick with defaultUserHooks"
Linking /tmp/SDL-0.5.4-7638/SDL-0.5.4/dist/setup/setup ...
Warning: defaultUserHooks in Setup script is deprecated.
Configuring SDL-0.5.4...
checking for sdl-config... no
checking for sdl11-config... no
configure: error: *** SDL not found! Get SDL from www.libsdl.org.
If you already installed it, check it's in the path. If problem remains,
please send a mail to the address that appears in ./configure --version
indicating your platform, the version of configure script and the problem.
Failed to install SDL-0.5.4
cabal: Error: some packages failed to install:
SDL-0.5.4 failed during the configure step. The exception was:
ExitFailure 1
SDL-mixer-0.6.1 depends on SDL-0.5.4 which failed to install.
SDL-ttf-0.6.2 depends on SDL-0.5.4 which failed to install.
fallingblocks-0.1.4 depends on SDL-0.5.4 which failed to install.