(rule
 (alias runtest)
 (enabled_if (>= %{ocaml_version} "4.08.0"))
 (deps
  (:test test.ml)
  (package ppxlib))
 (action (chdir %{project_root}
          (progn
           (run expect-test %{test})
           (diff? %{test} %{test}.corrected)))))
