Resolving dependencies...
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-8989/HsSyck-0.3/dist/setup/setup.hs, /tmp/cabal-tmp-8989/HsSyck-0.3/dist/setup/Main.o )

/tmp/cabal-tmp-8989/HsSyck-0.3/dist/setup/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/cabal-tmp-8989/HsSyck-0.3/dist/setup/setup ...
Warning: defaultUserHooks in Setup script is deprecated.
Configuring HsSyck-0.3...
Warning: No 'build-type' specified. If you do not need a custom Setup.hs or
./configure script then use 'build-type: Simple'.
Building HsSyck-0.3...
Preprocessing library HsSyck-0.3...

on the commandline: Warning:
    -fglasgow-exts is deprecated: Use individual extensions instead

Data/Yaml/Syck.hsc:15:8:
    Could not find module ‘Data.Generics’
    Use -v to see a list of the files searched for.

Data/Yaml/Syck.hsc:25:18:
    Could not find module ‘Data.HashTable’
    Use -v to see a list of the files searched for.

Data/Yaml/Syck.hsc:27:8:
    Could not find module ‘Data.ByteString.Char8’
    It is a member of the hidden package ‘bytestring-0.10.6.0@bytes_6elQVSg5cWdFrvRnfxTUrH’.
    Perhaps you need to add ‘bytestring’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.
Failed to install HsSyck-0.3
cabal: Error: some packages failed to install:
HsSyck-0.3 failed during the building phase. The exception was:
ExitFailure 1