fun x x_1 => x : (x : ?m) → ?m x → ?m
[Elab.step] expected type: <not-available>, term
    fun x => m x
  [Elab.step] expected type: Sort ?u, term
      _
    [Elab.step.result] ?m
  [Elab.step] expected type: <not-available>, term
      m x
    [Elab.step] expected type: <not-available>, term
        fun x✝ => x
      [Elab.step] expected type: Sort ?u, term
          _
        [Elab.step.result] ?m
      [Elab.step] expected type: <not-available>, term
          x
        [Elab.step.result] x
      [Elab.step.result] fun x_1 => x
    [Elab.step.result] fun x_1 => x
  [Elab.step.result] fun x x_1 => x