T11520.hs:15:77: error:
    • Expected kind ‘k20 -> k10’, but ‘g’ has kind ‘k’
      ‘k’ is a rigid type variable bound by
        the instance declaration
        at T11520.hs:(15,1)-(16,23)
    • In the second argument of ‘Compose’, namely ‘g’
      In the first argument of ‘Typeable’, namely ‘(Compose f g)’
      In the instance declaration for ‘Typeable (Compose f g)’