fact: Definition pack_sigma_nondep@{i|} {A : Type@{i}} {P : Type@{i}} {p q : A} {x : P} {y : P} (e' : p = q) (e : x = y) : (p, x) = (q, y).
imports: Coq.Program.Tactics Equations.Init Equations.Signature Equations.CoreTactics Equations.HoTT.Logic Equations.HoTT.Classes Equations.HoTT.EqDec