What is the Idiomatic way to build proto with dependency on `google/rpc/status.proto`

[Saurabh Mohan]

Hello Bazel-discuss.

I have a proto definition which has `import "google/rpc/status.proto";`

What is the idiomatic/efficient/correct way for defining a Bazel `go_proto_library()` rule? Currently my **working** `BUILD` file is:

    load("@io_bazel_rules_go//go:def.bzl", "go_library")

    load("@org_pubref_rules_protobuf//go:rules.bzl", "go_proto_library", "GRPC_COMPILE_DEPS")

    go_proto_library(

        name = "protolib",

        protos = glob(["*.proto"]),

        verbose = 1,

        visibility = ["//visibility:public"],

        with_grpc = True,

    #

    # Used to define how the generate pb.go file will generate the

    # go import statement.

    #

    #

    #    importmap = {

    #       "google/rpc/status.proto":"google.golang.org/genproto/googleapis/rpc/status",

    #    },

    

    #

    # The --proto_path option of protoc compiler.

    # the external is-i think-the bazel magic of where the external .proto files are placed.

    #

        imports = [

            "external/com_google_protobuf/src",

            "external/googleapi",

        ],

    #

    # any.proto and google/rpc/status.proto inclusing in the .proto file.

    #

        inputs = [

            "@com_google_protobuf//:well_known_protos",

            "@googleapi//:rpc_status_protos_src",

        ],

    #

    # pb.go file dependencies

    #

        deps = [ "@org_golang_google_genproto//googleapis/rpc/status:go_default_library",

        ],

    )

The relevant pieces of the `WORKSPACE` file are:

     #

    # Needed for gathering the pb.go's dependency on gRPC status.pb.go

    #

    go_repository(

        name = "org_golang_google_genproto",

        importpath = "github.com/google/go-genproto",

    )

    ## Needed for including google/grpc/status.proto in a protobuf definition

    GOOGLEAPIS_SHA="5c6df0cd18c6a429eab739fb711c27f6e1393366" # May 14, 2017

    new_http_archive(

       name = "googleapi",

       strip_prefix = "googleapis-" + GOOGLEAPIS_SHA,

       urls = [

          "https://github.com/googleapis/googleapis/archive/" + GOOGLEAPIS_SHA + ".tar.gz",

       ],

       build_file_content = """

    load("@com_google_protobuf//:protobuf.bzl", "cc_proto_library")

    

    filegroup(

        name = "rpc_status_protos_src",

        srcs = [

            "google/rpc/status.proto",

        ],

        visibility = ["//visibility:public"],

     )

    """

    )

Is there a better way to do the same? In my search for an answer the relevant answer I found was https://groups.google.com/forum/#!topic/bazel-discuss/vA504VqSiCw

I'd be very interested in finding an easier way to get this done.

Thanks

-Saurabh.