Fix oasis, so META is generated with correct ppx extensions.

META

@@ -1,5 +1,5 @@
 # OASIS_START
-# DO NOT EDIT (digest: 703fa744ace3cf1f5a918feeeceee6da)
+# DO NOT EDIT (digest: 1988a0fb36443027f194482ea2c9f474)
 version = "1.0.2"
 description = "Functional lenses"
 archive(byte) = "lens.cma"
@@ -11,10 +11,12 @@ package "ppx_deriving" (
  version = "1.0.2"
  description = "ppx-deriving support for lens"
  requires = "lens ppx_deriving.api ppx_tools.metaquot"
- archive(byte) = "lens_ppx_deriving.cma"
- archive(byte, plugin) = "lens_ppx_deriving.cma"
- archive(native) = "lens_ppx_deriving.cmxa"
- archive(native, plugin) = "lens_ppx_deriving.cmxs"
+ archive(syntax, preprocessor) = "lens_ppx_deriving.cma"
+ archive(syntax, toploop) = "lens_ppx_deriving.cma"
+ archive(syntax, preprocessor, native) = "lens_ppx_deriving.cmxa"
+ archive(syntax, preprocessor, native, plugin) = "lens_ppx_deriving.cmxs"
+ requires(-ppx_driver) = "ppx_deriving"
+ ppxopt(-ppx_driver) = "ppx_deriving,./lens_ppx_deriving.cma"
  exists_if = "lens_ppx_deriving.cma"
 )
 # OASIS_STOP

_oasis

@@ -35,6 +35,9 @@ Library lens_ppx_deriving
     Path: ppx_deriving
     Modules: Ppx_deriving_lens
     BuildDepends: lens, ppx_deriving.api, ppx_tools.metaquot
+    XMETAType: syntax
+    XMETAExtraLines: requires(-ppx_driver) = "ppx_deriving"
+                     ppxopt(-ppx_driver) = "ppx_deriving,./lens_ppx_deriving.cma"
 
 Executable ppx_test
     Build$:        flag(ppx) && flag(tests)

setup.ml

@@ -1,7 +1,7 @@
 (* setup.ml generated for the first time by OASIS v0.3.0 *)
 
 (* OASIS_START *)
-(* DO NOT EDIT (digest: 99c2a745a648328ec9f951c3bdffd5a9) *)
+(* DO NOT EDIT (digest: 9a2a009fada94463be001c09eed40b08) *)
 (*
    Regenerated by OASIS v0.4.5
    Visit http://oasis.forge.ocamlcore.org for more information and
@@ -7074,15 +7074,14 @@ let setup_t =
        };
      oasis_fn = Some "_oasis";
      oasis_version = "0.4.5";
-     oasis_digest =
-       Some "\157r6\157\181\156\n\206\015\022\153\234\018]\183\243";
+     oasis_digest = Some "\134\242%>\194f\186\221\185_\026\132+AN6";
      oasis_exec = None;
      oasis_setup_args = [];
      setup_update = false
   };;
 
 let setup () = BaseSetup.setup setup_t;;
 
-# 7087 "setup.ml"
+# 7086 "setup.ml"
 (* OASIS_STOP *)
 let () = setup ();;