Protos that import "google/protobuf/any.proto" generate an extra empty file

[trevoranderson]

Example proto file:

syntax = "proto3";
import "google/protobuf/any.proto";

package blob;

// A config object containing a single config and its value
message TypedBlob {
  string key = 1;
  oneof val {
    bool bool_val = 3;
    int64 int_val = 4;
    string  string_val = 5;
    google.protobuf.Any proto_val = 6;
  }
}

Expected output: a blob.rs file using ::prost_types::Any.
Actual output: that + an additional empty file called google.protobuf.rs

I'm generating the protos and checking them into my source tree, not running as part of build.rs. It's not a problem correctness-wise, but slightly annoying to have the clutter of empty files. Is there a workaround for this? I experimented with extern_path but that did not seem to matter.

[LucioFranco]

Yeah, its a known issue, #228 tried to fix it but I had to revert the fix PR since it broke many other layers for some reason. If you have the time feel free to take a crack at a it.

[trevoranderson]

@LucioFranco Made an attempt. I'm not overly familiar with the project so definitely open to feedback from someone who knows more, but it seemed to fix the issues I was having as well as preventing the issue of the previous fix.