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+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+(*i camlp4deps: "grammar/grammar.cma" i*)
+
+open Misctypes
+open Class_tactics
+
+DECLARE PLUGIN "g_class"
+
+TACTIC EXTEND progress_evars
+  [ "progress_evars" tactic(t) ] -> [ progress_evars (Tacinterp.eval_tactic t) ]
+END
+
+(** Options: depth, debug and transparency settings. *)
+
+let set_transparency cl b =
+  List.iter (fun r ->
+    let gr = Smartlocate.global_with_alias r in
+    let ev = Tacred.evaluable_of_global_reference (Global.env ()) gr in
+      Classes.set_typeclass_transparency ev false b) cl
+
+VERNAC COMMAND EXTEND Typeclasses_Unfold_Settings CLASSIFIED AS SIDEFF
+| [ "Typeclasses" "Transparent" reference_list(cl) ] -> [
+    set_transparency cl true ]
+END
+
+VERNAC COMMAND EXTEND Typeclasses_Rigid_Settings CLASSIFIED AS SIDEFF
+| [ "Typeclasses" "Opaque" reference_list(cl) ] -> [
+    set_transparency cl false ]
+END
+
+open Genarg
+
+let pr_debug _prc _prlc _prt b =
+  if b then Pp.str "debug" else Pp.mt()
+
+ARGUMENT EXTEND debug TYPED AS bool PRINTED BY pr_debug
+| [ "debug" ] -> [ true ]
+| [ ] -> [ false ]
+END
+
+let pr_depth _prc _prlc _prt = function
+    Some i -> Pp.int i
+  | None -> Pp.mt()
+
+ARGUMENT EXTEND depth TYPED AS int option PRINTED BY pr_depth
+| [ int_or_var_opt(v) ] -> [ match v with Some (ArgArg i) -> Some i | _ -> None ]
+END
+
+(* true = All transparent, false = Opaque if possible *)
+
+VERNAC COMMAND EXTEND Typeclasses_Settings CLASSIFIED AS SIDEFF
+ | [ "Typeclasses" "eauto" ":=" debug(d) depth(depth) ] -> [
+     set_typeclasses_debug d;
+     set_typeclasses_depth depth
+   ]
+END
+
+TACTIC EXTEND typeclasses_eauto
+| [ "typeclasses" "eauto" "with" ne_preident_list(l) ] -> [ Proofview.V82.tactic (typeclasses_eauto l) ]
+| [ "typeclasses" "eauto" ] -> [ Proofview.V82.tactic (typeclasses_eauto ~only_classes:true [Hints.typeclasses_db]) ]
+END
+
+TACTIC EXTEND head_of_constr
+  [ "head_of_constr" ident(h) constr(c) ] -> [ head_of_constr h c ]
+END
+
+TACTIC EXTEND not_evar
+  [ "not_evar" constr(ty) ] -> [ not_evar ty ]
+END
+
+TACTIC EXTEND is_ground
+  [ "is_ground" constr(ty) ] -> [ Proofview.V82.tactic (is_ground ty) ]
+END
+
+TACTIC EXTEND autoapply
+  [ "autoapply" constr(c) "using" preident(i) ] -> [ Proofview.V82.tactic (autoapply c i) ]
+END