Some nits.

algebra/ofe.v

@@ -342,11 +342,11 @@ Section unit.
   Definition unit_ofe_mixin : OfeMixin unit.
   Proof. by repeat split; try exists 0. Qed.
   Canonical Structure unitC : ofeT := OfeT unit unit_ofe_mixin.
-  
+
   Global Program Instance unit_cofe : Cofe unitC := { compl x := () }.
   Next Obligation. by repeat split; try exists 0. Qed.
-  
-Global Instance unit_discrete_cofe : Discrete unitC.
+
+  Global Instance unit_discrete_cofe : Discrete unitC.
   Proof. done. Qed.
 End unit.
 

base_logic/lib/boxes.v

@@ -15,8 +15,8 @@ Section box_defs.
 
   Definition slice_name := gname.
 
-  Definition box_own_auth (γ : slice_name) (a : auth (option (excl bool)))
-    := own γ (a, (∅:option (agree (later (iPreProp Σ))))).
+  Definition box_own_auth (γ : slice_name) (a : auth (option (excl bool))) : iProp Σ :=
+    own γ (a, (∅:option (agree (later (iPreProp Σ))))).
 
   Definition box_own_prop (γ : slice_name) (P : iProp Σ) : iProp Σ :=
     own γ (∅:auth (option (excl bool)), Some (to_agree (Next (iProp_unfold P)))).