use more of ppxlib, less of compiler-libs

Ref: #8

mlx/dune

@@ -4,7 +4,7 @@
  (public_name mlx-pp)
  (flags
   (:standard -w -9-67 -open Astlib.Ast_501))
- (libraries ppxlib compiler-libs.common))
+ (libraries ppxlib ocaml-compiler-libs.shadow))
 
 (ocamllex lexer)
 

mlx/jsx_helper.ml

@@ -11,7 +11,7 @@ let make_loc (startpos, endpos) =
     Location.loc_ghost = false;
   }
 
-let mkloc = Location.mkloc
+let mkloc txt loc = { Location.txt; loc }
 let mkexp ~loc d = Exp.mk ~loc:(make_loc loc) d
 
 let mkjsxexp ~loc:loc' e =

mlx/location.ml

@@ -0,0 +1,16 @@
+include Ppxlib.Location
+
+type error = Error.t
+
+let mkloc txt loc = { txt; loc }
+let mknoloc txt = { txt; loc = none }
+let input_name = Ocaml_common.Location.input_name
+let curr = Ocaml_common.Location.curr
+let error ?(loc=none) ?(sub=[]) ?footnote:_ msg = Error.make ~loc ~sub msg
+let errorf ?loc ?sub ?footnote:_ fmt = Format.kasprintf (error ?loc ?sub) fmt
+let msg ?(loc=none) fmt = Format.kasprintf (fun msg -> loc, msg) fmt
+let deprecated = Ocaml_common.Location.deprecated
+let error_of_exn = Ocaml_common.Location.error_of_exn
+let print_report = Ocaml_common.Location.print_report
+let register_error_of_exn = Error.register_error_of_exn
+let prerr_warning = Ocaml_common.Location.prerr_warning

mlx/warnings.ml

@@ -0,0 +1 @@
+include Ocaml_common.Warnings

ocamlmerlin_mlx/dune

@@ -13,5 +13,4 @@
   mlx_kernel
   merlin-lib.extend
   merlin-lib.kernel
-  ppxlib
-  compiler-libs.common))
+  ppxlib))

ocamlmerlin_mlx/ocaml/preprocess/jsx_helper.ml

@@ -12,7 +12,7 @@ let make_loc (startpos, endpos) =
     Location.loc_ghost = false;
   }
 
-let mkloc = Location.mkloc
+let mkloc txt loc = { Location.txt; loc }
 let mkexp ~loc d = Exp.mk ~loc:(make_loc loc) d
 
 let mkjsxexp ~loc:loc' e =

ocamlmerlin_mlx/ocaml/utils/dune

@@ -2,7 +2,7 @@
  (name mlx_ocaml_utils)
  (package ocamlmerlin-mlx)
  (flags :standard -w=-9-67-69 -open=Mlx_utils -open Astlib.Ast_501)
- (libraries ppxlib compiler-libs.common merlin-lib.config mlx_utils))
+ (libraries ppxlib merlin-lib.config mlx_utils))
 
 (copy_files
  (enabled_if