2 true: dtypes, warn_A, warn_z
3 <*.ml>: pp(deriving), use_deriving
4 <example/*>: not_hygienic
9 <*.{byte,native}>: use_extLib, use_nums, use_unix, use_deriving, use_oUnit
10 <sql_parser.ml>: warn_e, -dtypes, -pp(deriving), -use_deriving, -use_extLib