true: \
  debug, \
  safe_string, \
  warn(A-4-44), \
  package(result), \
  cppo_V_OCAML

not <VisitorsRuntime.*>: \
  package(compiler-libs.common), \
  package(ppx_deriving.api)

# If you wish to use quotations and antiquotations, add package(ppx_tools.metaquot).
