∀ {P : CategoryTheory.MorphismProperty AlgebraicGeometry.Scheme}
  {Q : {R S : Type u} → [inst : CommRing R] → [inst_1 : CommRing S] → (R →+* S) → Prop}
  [AlgebraicGeometry.HasRingHomProperty P Q],
  (RingHom.IsStableUnderBaseChange fun {R S} [CommRing R] [CommRing S] => Q) → P.IsStableUnderBaseChange