Major breakthrough, just some artifacting to resolve

layers/waterway/waterway.yaml

@@ -10,6 +10,7 @@ layer:
     name: |
         The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value of the waterway.
         The `name` field may be empty for NaturalEarth data or at lower zoom levels.
+    name_en: The english `name:en` value if available.
     class:
       description: |
         The original value of the [`waterway`](http://wiki.openstreetmap.org/wiki/Key:waterway) tag.
@@ -21,7 +22,7 @@ layer:
       - ditch
   datasource:
     geometry_field: geometry
-    query: (SELECT geometry, name, class FROM layer_waterway(!bbox!, z(!scale_denominator!))) AS t
+    query: (SELECT geometry, name, name_en, class FROM layer_waterway(!bbox!, z(!scale_denominator!))) AS t
 schema:
   - ./merge_waterway.sql
   - ./waterway.sql