Module PermDef : PermDefSig.
Definition fun_of_perm := fun_of_perm_def.
Definition perm := perm_def.

Lemma fun_of_permE : fun_of_perm = fun_of_perm_def. Proof. by []. Qed.
Lemma permE : perm = perm_def. Proof. by []. Qed.