val hack_params :
?loc:??? ->
(Ppxlib.core_type * 'a) list ->
string list
* string list
* (Stdlib.String.t ->
string)
* AstHelpers.type_arg listclass g : (Ppxlib.longident * Ppxlib.expression) list -> (bool
* Ppxlib.type_declaration
list) -> object ... end