Resolving dependencies...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Installed mtl-2.2.1
Configuring cpuperf-0.1...
Building cpuperf-0.1...
Failed to install cpuperf-0.1
Build log ( /home/builder/.cabal/logs/cpuperf-0.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-31040/cpuperf-0.1'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-31040/cpuperf-0.1/dist/setup/setup.hs, /tmp/cabal-tmp-31040/cpuperf-0.1/dist/setup/Main.o )
Linking /tmp/cabal-tmp-31040/cpuperf-0.1/dist/setup/setup ...
Configuring cpuperf-0.1...
Warning: No 'build-type' specified. If you do not need a custom Setup.hs or
./configure script then use 'build-type: Simple'.
Building cpuperf-0.1...
Preprocessing executable 'cpuperf' for cpuperf-0.1...

Shell.hs:1:12: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead
[1 of 3] Compiling Process          ( Process.hs, dist/build/cpuperf/cpuperf-tmp/Process.o )

Process.hs:3:1: error:
    Failed to load interface for ‘System.Process’
    It is a member of the hidden package ‘process-1.4.2.0’.
    Perhaps you need to add ‘process’ 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-31040/cpuperf-0.1'
cabal: Error: some packages failed to install:
cpuperf-0.1 failed during the building phase. The exception was:
ExitFailure 1