{motive : Lean.Elab.Tactic.Do.ExceptCondsDefault✝ → Sort u} →
  (t : Lean.Elab.Tactic.Do.ExceptCondsDefault✝¹) →
    Lean.Elab.Tactic.Do.ExceptCondsDefault.ctorIdx✝ t = 2 →
      motive Lean.Elab.Tactic.Do.ExceptCondsDefault.true✝ → motive t