Metapp.RfSourceThe module `Rf` has been introduced in Ast_helper with OCaml 4.08.0 (as row_field type switched to a record representation). Moreover, even the current Ast_helper.Rf.inherit_ (OCaml 4.10.0) misses the ?attrs flag.
type desc = | Rtag of Ppxlib.Asttypes.label Location.loc * bool * Ppxlib.core_type list| Rinherit of Ppxlib.core_typeval tag :
?loc:Location.t ->
?attrs:Ppxlib.attributes ->
Ppxlib.Asttypes.label Location.loc ->
bool ->
Ppxlib.core_type list ->
Ppxlib.row_fieldval inherit_ :
?loc:Location.t ->
?attrs:Ppxlib.attributes ->
Ppxlib.core_type ->
Ppxlib.row_field