1079.lean:3:2-6:12: error: alternative 'isFalse' has not been provided
[Meta.Tactic.simp.rewrite] h:1000, m ==> n
[Meta.Tactic.simp.rewrite] eq_self:1000, n = n ==> True
[Meta.Tactic.simp.unify] ite_self:1000, failed to unify
  if ?c then ?a else ?a
with
  if True then Ordering.eq else Ordering.gt
[Meta.Tactic.simp.rewrite] ite_true:1000, if True then Ordering.eq else Ordering.gt ==> Ordering.eq
[Meta.Tactic.simp.unify] eq_self:1000, failed to unify
  ?a = ?a
with
  Ordering.eq = Ordering.lt
[Meta.Tactic.simp.rewrite] false_implies:1000, False → False ==> True