T14174.hs:6:27: error: [GHC-83865]
    • Expecting one more argument to ‘x’
      Expected kind ‘x Int’, but ‘x’ has kind ‘* -> *’
    • In the second argument of ‘T’, namely ‘x’
      In the type ‘(T (x Int) x)’
      In the definition of data constructor ‘MkS’