mod153.hs:2:11: error: [GHC-87543]
    Ambiguous occurrence ‘id’.
    It could refer to
       either ‘Prelude.id’,
              imported from ‘Prelude’ at mod153.hs:2:8
              (and originally defined in ‘GHC.Base’),
           or ‘M.id’, defined at mod153.hs:2:21.