Resolving dependencies...
Configuring network-2.6.3.1...
Building network-2.6.3.1...
Installed network-2.6.3.1
Configuring pcap-0.4.5.2...
Building pcap-0.4.5.2...
Installed pcap-0.4.5.2
Configuring hsns-0.5...
Building hsns-0.5...
Failed to install hsns-0.5
Build log ( /home/builder/.cabal/logs/hsns-0.5.log ):
cabal: Entering directory '/tmp/cabal-tmp-21048/hsns-0.5'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-21048/hsns-0.5/dist/setup/setup.hs, /tmp/cabal-tmp-21048/hsns-0.5/dist/setup/Main.o )
Linking /tmp/cabal-tmp-21048/hsns-0.5/dist/setup/setup ...
Configuring hsns-0.5...
Warning: No 'build-type' specified. If you do not need a custom Setup.hs or
./configure script then use 'build-type: Simple'.
Warning: Instead of 'ghc-options: -lpcap' use 'extra-libraries: pcap'
Building hsns-0.5...
Preprocessing executable 'hsns' for hsns-0.5...
[1 of 2] Compiling Options          ( Options.hs, dist/build/hsns/hsns-tmp/Options.o )
[2 of 2] Compiling Main             ( Hsns.hs, dist/build/hsns/hsns-tmp/Main.o )

Hsns.hs:5:1: 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-21048/hsns-0.5'
cabal: Error: some packages failed to install:
hsns-0.5 failed during the building phase. The exception was:
ExitFailure 1