Resolving dependencies...
Configuring capped-list-1.0...
Building capped-list-1.0...
Failed to install capped-list-1.0
Build log ( /home/builder/.cabal/logs/capped-list-1.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-5041/capped-list-1.0'
Configuring capped-list-1.0...
Building capped-list-1.0...
Preprocessing library capped-list-1.0...
[1 of 1] Compiling Data.CappedList  ( Data/CappedList.hs, dist/build/Data/CappedList.o )

Data/CappedList.hs:37:1: error:
    Failed to load interface for ‘Data.Empty’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-5041/capped-list-1.0'
cabal: Error: some packages failed to install:
capped-list-1.0 failed during the building phase. The exception was:
ExitFailure 1