Hello,

Trying to use the exprotobuf library, but get the following error message:

defmodule Messages do
  use Protobuf,
    from: Path.expand("/home/wannes/Documents/ex_cucumber_message/messages.proto")

  # use_package_names: true,
  # namespace: :"Elixir"
end

> $ mix compile                                                                                         
Compiling 1 file (.ex)

== Compilation error in file lib/cucumber_messages/messages.ex ==
** (CaseClauseError) no case clause matching: %Protobuf.Field{fnum: 1, name: :name, occurrence: :defaulty, opts: [], rnum: 2, type: :string}
    lib/exprotobuf/define_message.ex:147: Protobuf.DefineMessage.define_trivial_typespec_fields/2
    lib/exprotobuf/define_message.ex:135: Protobuf.DefineMessage.define_trivial_typespec/1
    lib/exprotobuf/define_message.ex:54: Protobuf.DefineMessage.def_message/3
    lib/exprotobuf/builder.ex:135: anonymous fn/6 in Protobuf.Builder.generate/2
    (elixir 1.10.3) lib/enum.ex:2111: Enum."-reduce/3-lists^foldl/2-0-"/3
    lib/exprotobuf/builder.ex:82: Protobuf.Builder.generate/2
    (stdlib 3.13) erl_eval.erl:680: :erl_eval.do_apply/6
    (stdlib 3.13) erl_eval.erl:449: :erl_eval.expr/5

I’ve put the code at : https://github.com/WannesFransen1994/ex_cucumber_messages . The proto file is messages.proto .

Note: The proto file can be parsed with the ahamez/protox library, which appears to be more performant but does require compile-time external dependencies. Hence my slight personal preference to exprotobuf, if it compiles.

Thank you in advance.