General.Exec_err
val to_yojson :
'value 'state_err. ('value -> Yojson.Safe.t) ->
('state_err -> Yojson.Safe.t) ->
('value, 'state_err) t ->
Yojson.Safe.t
val of_yojson :
'value 'state_err. (Yojson.Safe.t ->
'value Ppx_deriving_yojson_runtime.error_or) ->
(Yojson.Safe.t -> 'state_err Ppx_deriving_yojson_runtime.error_or) ->
Yojson.Safe.t ->
('value, 'state_err) t Ppx_deriving_yojson_runtime.error_or
val _ :
(Yojson.Safe.t -> 'a Ppx_deriving_yojson_runtime.error_or) ->
(Yojson.Safe.t -> 'b Ppx_deriving_yojson_runtime.error_or) ->
Yojson.Safe.t ->
('a, 'b) t Ppx_deriving_yojson_runtime.error_or
val pp : 'a Fmt.t -> 'b Fmt.t -> Stdlib.Format.formatter -> ('a, 'b) t -> unit