Resolving dependencies...
Downloading oneormore-0.1.0.1...
Configuring oneormore-0.1.0.1...
Building oneormore-0.1.0.1...
Preprocessing library oneormore-0.1.0.1...

src/Data/OneOrMore.hs:5:8:
    Could not find module ‘Data.OneOrMore.Definition’
    Use -v to see a list of the files searched for.
Failed to install oneormore-0.1.0.1
cabal: Error: some packages failed to install:
oneormore-0.1.0.1 failed during the building phase. The exception was:
ExitFailure 1