Resolving dependencies...
Downloading HsSyck-0.2...
[1 of 1] Compiling Main             ( /tmp/HsSyck-0.2-10082/HsSyck-0.2/Setup.hs, /tmp/HsSyck-0.2-10082/HsSyck-0.2/dist/setup/Main.o )

/tmp/HsSyck-0.2-10082/HsSyck-0.2/Setup.hs:3:29: 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/HsSyck-0.2-10082/HsSyck-0.2/dist/setup/setup ...
Warning: defaultUserHooks in Setup script is deprecated.
Configuring HsSyck-0.2...
Warning: No 'build-type' specified. If you do not need a custom Setup.hs or
./configure script then use 'build-type: Simple'.
Building HsSyck-0.2...
Preprocessing library HsSyck-0.2...
Syck.hsc:1:18: fatal error: syck.h: No such file or directory
compilation terminated.
compiling dist/build/Data/Yaml/Syck_hsc_make.c failed (exit code 1)
command was: /usr/bin/gcc -c dist/build/Data/Yaml/Syck_hsc_make.c -o dist/build/Data/Yaml/Syck_hsc_make.o -fno-stack-protector -Wl,--hash-size=31 -Wl,--reduce-memory-overheads -D__GLASGOW_HASKELL__=706 -Dlinux_BUILD_OS -Dlinux_HOST_OS -Dx86_64_BUILD_ARCH -Dx86_64_HOST_ARCH -Isyck -I/usr/local/lib/ghc-7.6.3/base-4.6.0.1/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/lib/ghc-7.6.3/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/lib/ghc-7.6.3/include/
Failed to install HsSyck-0.2
cabal: Error: some packages failed to install:
HsSyck-0.2 failed during the building phase. The exception was:
ExitFailure 1