dev-ml/ppx_tools: backport upstream fixes for ocaml 4.04

Package-Manager: portage-2.3.2

dev-ml/ppx_tools/files/ocaml404.patch

@@ -0,0 +1,47 @@
+Index: ppx_tools-5.0-4.03.0/ast_mapper_class.ml
+===================================================================
+--- ppx_tools-5.0-4.03.0.orig/ast_mapper_class.ml
++++ ppx_tools-5.0-4.03.0/ast_mapper_class.ml
+@@ -335,6 +335,7 @@ module P = struct
+     | Ppat_unpack s -> unpack ~loc ~attrs (map_loc sub s)
+     | Ppat_exception p -> exception_ ~loc ~attrs (sub # pat p)
+     | Ppat_extension x -> extension ~loc ~attrs (sub # extension x)
++    | Ppat_open (l, p) -> open_ ~loc ~attrs (map_loc sub l) (sub # pat p)
+ end
+ 
+ module CE = struct
+Index: ppx_tools-5.0-4.03.0/genlifter.ml
+===================================================================
+--- ppx_tools-5.0-4.03.0.orig/genlifter.ml
++++ ppx_tools-5.0-4.03.0/genlifter.ml
+@@ -49,8 +49,8 @@ module Main : sig end = struct
+   let rec gen ty =
+     if Hashtbl.mem printed ty then ()
+     else let tylid = Longident.parse ty in
+-      let (_, td) =
+-        try Env.lookup_type tylid env
++      let td =
++        try Env.find_type (Env.lookup_type tylid env) env
+         with Not_found ->
+           Format.eprintf "** Cannot resolve type %s@." ty;
+           exit 2
+Index: ppx_tools-5.0-4.03.0/rewriter.ml
+===================================================================
+--- ppx_tools-5.0-4.03.0.orig/rewriter.ml
++++ ppx_tools-5.0-4.03.0/rewriter.ml
+@@ -92,13 +92,13 @@ let () =
+         | `Struct ->
+             let pstr = Parse.implementation lexer in
+             let pstr = Pparse.apply_rewriters (* ~restore:true *) ~tool_name:!tool_name
+-                Config.ast_impl_magic_number pstr in
++	        Pparse.Structure pstr in
+             Pprintast.structure fmt pstr;
+             Format.pp_print_newline fmt ()
+         | `Sig ->
+             let psig = Parse.interface lexer in
+             let psig = Pparse.apply_rewriters (* ~restore:true *) ~tool_name:!tool_name
+-                Config.ast_intf_magic_number psig in
++	        Pparse.Signature psig in
+             Pprintast.signature fmt psig;
+             Format.pp_print_newline fmt ())
+   with exn ->

dev-ml/ppx_tools/ppx_tools-5.0.4.03.0.ebuild

@@ -4,7 +4,7 @@
 
 EAPI=5
 
-inherit findlib versionator
+inherit findlib versionator eutils
 
 MY_PV=$(replace_version_separator 2 '+')
 DESCRIPTION="Tools for authors of ppx rewriters"
@@ -20,6 +20,10 @@ DEPEND=">=dev-lang/ocaml-4.03.0:="
 RDEPEND="${DEPEND}"
 S="${WORKDIR}/${PN}-$(replace_version_separator 2 '-')"
 
+src_prepare() {
+	has_version '>=dev-lang/ocaml-4.04_beta' && epatch "${FILESDIR}/ocaml404.patch"
+}
+
 src_compile() {
 	emake -j1
 }