rnfail044.hs:5:12:
    Ambiguous occurrence ‘splitAt’
    It could refer to either ‘A.splitAt’, defined at rnfail044.hs:8:3
                          or ‘Data.List.splitAt’,
                             imported from ‘Prelude’ at rnfail044.hs:5:8
                             (and originally defined in ‘GHC.List’)