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