Merge pull request #123 from SkySkimmer/sort-poly

Adapt to coq/coq#17836 (sort poly)

graphdepend.mlg

@@ -39,7 +39,7 @@ try
   let t, ctx = Typeops.type_of_global_in_context (Global.env()) gref in
 (* Beware of this code, not considered entirely correct, but I don't know
    how to fix it. *)
-  let env = Environ.push_context ~strict:false (Univ.AbstractContext.repr ctx)
+  let env = Environ.push_context ~strict:false (UVars.AbstractContext.repr ctx)
             (Global.env ()) in
   let s = (Typeops.infer_type env t).Environ.utj_type in
   Sorts.is_prop s

searchdepend.mlg

@@ -50,7 +50,7 @@ let collect_long_names avoid (c:Constr.t) (acc:Data.t) =
     match kind c with
       | Var x -> add_identifier x acc
       | Sort s -> add_sort s acc
-      | Const cst -> add_constant (Univ.out_punivs cst) acc
+      | Const cst -> add_constant (UVars.out_punivs cst) acc
       | Ind (i,_) when not (List.exists (Names.MutInd.CanOrd.equal (fst i)) avoid) -> add_inductive i acc
       | Construct (cnst,_) when not (List.exists (Names.MutInd.CanOrd.equal (fst (fst cnst))) avoid) -> add_constructor cnst acc
       | Case({ci_ind=i},_,_,_,_,_,_) ->