(asdl_main c) -> _gen/frontend/types.asdl_c.h
  (frontend/consts_gen c) -> _gen/frontend/id_kind.asdl_c.h
  (lexer_gen) -> _gen/_tmp/match.re2c-input.h
_gen/_tmp/match.re2c-input.h -> (re2c) -> _gen/frontend/match.re2c.h
ninja: error: loading 'build.ninja': No such file or directory