mod152.hs:2:26: error: [GHC-87543]
    Ambiguous occurrence ‘id’
    It could refer to either ‘Prelude.id’,
                             imported from ‘Prelude’ at mod152.hs:2:8
                             (and originally defined in ‘GHC.Base’)
                          or ‘M.id’, defined at mod152.hs:2:36