Resolving dependencies... Configuring peano-0.1.0.1... Building peano-0.1.0.1... Installed peano-0.1.0.1 Configuring natural-induction-0.2.0.0... Building natural-induction-0.2.0.0... Installed natural-induction-0.2.0.0 Configuring clist-0.3.0.0... Building clist-0.3.0.0... Failed to install clist-0.3.0.0 Build log ( /home/builder/.cabal/logs/clist-0.3.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-10391/clist-0.3.0.0' Configuring clist-0.3.0.0... Building clist-0.3.0.0... Preprocessing library clist-0.3.0.0... cabal: can't find source for Data/CList in ., dist/build/autogen cabal: Leaving directory '/tmp/cabal-tmp-10391/clist-0.3.0.0' cabal: Error: some packages failed to install: clist-0.3.0.0 failed during the building phase. The exception was: ExitFailure 1