fact: Definition composePathOverLeftUnit {X:Type} {x x':X} (p:x=x') {Y : X -> Type} (y : Y x) (y' : Y x') (q:PathOver p y y') : identityPathOver y * q = q.
imports: UniMath.Foundations.All UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.PartA