There is so much to be done in deriving:
- https://github.com/ocaml-ppx/ppx_deriving/issues
- https://github.com/ocaml-ppx/ppx_deriving/pulls
- https://github.com/ocaml-ppx/ppx_deriving_yojson/issues
- https://github.com/ocaml-ppx/ppx_deriving_yojson/pulls
- https://github.com/ocaml-ppx/ppx_deriving_protobuf/issues
- https://github.com/ocaml-ppx/ppx_deriving_protobuf/pulls