Resolving dependencies...
Configuring mtl-2.2.1...
Configuring text-1.2.2.1...
Building mtl-2.2.1...
Building text-1.2.2.1...
Installed mtl-2.2.1
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring Emping-0.3...
Building Emping-0.3...
Failed to install Emping-0.3
Build log ( /home/builder/.cabal/logs/Emping-0.3.log ):
cabal: Entering directory '/tmp/cabal-tmp-5381/Emping-0.3'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-5381/Emping-0.3/dist/setup/setup.hs, /tmp/cabal-tmp-5381/Emping-0.3/dist/setup/Main.o )
Linking /tmp/cabal-tmp-5381/Emping-0.3/dist/setup/setup ...
Configuring Emping-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 Emping-0.3...
Preprocessing executable 'emping' for Emping-0.3...

on the commandline: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead
[1 of 6] Compiling Reduce           ( src/Reduce.hs, dist/build/emping/emping-tmp/Reduce.o )
[2 of 6] Compiling Codec            ( src/Codec.hs, dist/build/emping/emping-tmp/Codec.o )

src/Codec.hs:23:1: error:
    Failed to load interface for ‘Control.Monad.State’
    It is a member of the hidden package ‘mtl-2.2.1’.
    Perhaps you need to add ‘mtl’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.

src/Codec.hs:24:1: error:
    Failed to load interface for ‘Data.Array’
    It is a member of the hidden package ‘array-0.5.1.1’.
    Perhaps you need to add ‘array’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-5381/Emping-0.3'
cabal: Error: some packages failed to install:
Emping-0.3 failed during the building phase. The exception was:
ExitFailure 1