Resolving dependencies...
Downloading SDL-0.5.4...
[1 of 1] Compiling Main             ( /tmp/SDL-0.5.4-3398/SDL-0.5.4/dist/setup/setup.hs, /tmp/SDL-0.5.4-3398/SDL-0.5.4/dist/setup/Main.o )

/tmp/SDL-0.5.4-3398/SDL-0.5.4/dist/setup/setup.hs:5:31: 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-0.5.4-3398/SDL-0.5.4/dist/setup/setup ...
Warning: defaultUserHooks in Setup script is deprecated.
Configuring SDL-0.5.4...
checking for sdl-config... /usr/bin/sdl-config
configure: creating ./config.status
config.status: creating config.mk
config.status: creating SDL.buildinfo
config.status: creating includes/HsSDLConfig.h
Building SDL-0.5.4...
Preprocessing library SDL-0.5.4...

on the commandline: Warning:
    -fglasgow-exts is deprecated: Use individual extensions instead
[ 1 of 16] Compiling Graphics.UI.SDL.Utilities ( Graphics/UI/SDL/Utilities.hs, dist/build/Graphics/UI/SDL/Utilities.o )

Graphics/UI/SDL/Utilities.hs:33:25:
    Could not deduce (Num b) arising from the literal ‘0’
    from the context (Enum a b, Bits b)
      bound by the type signature for
                 toBitmask :: (Enum a b, Bits b) => [a] -> b
      at Graphics/UI/SDL/Utilities.hs:32:14-42
    Possible fix:
      add (Num b) to the context of
        the type signature for toBitmask :: (Enum a b, Bits b) => [a] -> b
    In the second argument of ‘foldr’, namely ‘0’
    In the first argument of ‘(.)’, namely ‘foldr (.|.) 0’
    In the expression: foldr (.|.) 0 . map fromEnum

Graphics/UI/SDL/Utilities.hs:39:45:
    Could not deduce (Num b) arising from the literal ‘0’
    from the context (Bounded a, Enum a b, Bits b)
      bound by the type signature for
                 fromBitmask :: (Bounded a, Enum a b, Bits b) => b -> [a]
      at Graphics/UI/SDL/Utilities.hs:35:16-54
    or from (Enum a1 b)
      bound by the inferred type of
               worker :: Enum a1 b => a1 -> [a1] -> [a1]
      at Graphics/UI/SDL/Utilities.hs:(38,11)-(41,26)
    Possible fix:
      add (Num b) to the context of
        the inferred type of worker :: Enum a1 b => a1 -> [a1] -> [a1]
        or the type signature for
             fromBitmask :: (Bounded a, Enum a b, Bits b) => b -> [a]
    In the second argument of ‘(/=)’, namely ‘0’
    In the expression: (mask .&. fromEnum v) /= 0
    In the expression: if (mask .&. fromEnum v) /= 0 then (:) v else id
Failed to install SDL-0.5.4
cabal: Error: some packages failed to install:
SDL-0.5.4 failed during the building phase. 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.