Build protobufs in Go, easily.

protobuild works by scanning the go package in a project and emitting correct protoc commands, configured with the plugins, packages and details of your choice.

It should work with both the default golang/protobuf and the gogo toolchain. If it doesn't, we should figure out how to get there.

The main benefit is that it makes it much easier to consume external types from vendored projects. By integrating the protoc include paths with Go's vendoring and GOPATH, builds are much easier to keep consistent across a project.

This comes from experience with generating protobufs with go generate in swarmkit and the tool used with containerd. It should replace both.

Very early stages.

To ensure easy use with builds, we'll try to support go get. Install with the following command:

go get -u github.com/stevvooe/protobuild

Protobuild works by providing a list of Go packages in which to build the protobufs. To get started with a project, you must do the following:

1. Create a Protobuild.toml file in the root of your Go project. Use the example as a starting point.

2. Make sure that the packages where you want your protobuf files have a Go file in place. Usually, adding a doc.go file is sufficient. A package for protobuf should look like this:

   foo.proto
   doc.go
   

   Where the contents of doc.go will have a package declaration in it. See the example for details. Make sure the package name corresponds to what is in the go_package option.

3. Run the protobuild command:

   go list ./... | grep -v vendor | xargs protobuild
   

TODO(stevvooe): Make this better.

Contributions are welcome.

Please ensure that commits are signed off.

For more complex PRs or design changes, please submit an issue for discussion first.