Resolving dependencies...
Configuring Numbers-0.1...
Building Numbers-0.1...
Preprocessing library Numbers-0.1...

Data/Numbers.hs:12:8:
    Could not find module ‘Data.Numbers.Primes’
    Use -v to see a list of the files searched for.
Failed to install Numbers-0.1
cabal: Error: some packages failed to install:
Numbers-0.1 failed during the building phase. The exception was:
ExitFailure 1