ppx_import in .ml from .mli

build.txt

$ ocamlbuild -classic-display -use-ocamlfind -package ppx_import,ppx_deriving.std test.cma
ocamlfind ocamldep -package ppx_import,ppx_deriving.std -modules test.mli > test.mli.depends
ocamlfind ocamlc -c -package ppx_import,ppx_deriving.std -o test.cmi test.mli
ocamlfind ocamldep -package ppx_import,ppx_deriving.std -modules test.ml > test.ml.depends
ocamlfind ocamlc -c -package ppx_import,ppx_deriving.std -o test.cmo test.ml
+ ocamlfind ocamlc -c -package ppx_import,ppx_deriving.std -o test.cmo test.ml
File "test.ml", line 1, characters 19-25:
Error: Unbound module Test
Command exited with code 2.

test.ml

type t = [%import: Test.t] [@@deriving create]

test.mli

type t = {
  x : int;
  y : int;
}