(rule
 (targets test.actual.ml)
 (deps test.ml)
 (action (run ./bin/pp.exe --impl %{deps} -o %{targets})))

(rule
 (alias runtest)
 (action (diff test.expected.ml test.actual.ml)))

(test
 (name test)
 (modules test)
 (preprocess (pps ppx_poplpaper)))