Adding Google Cloud pubsub causes "Inconsistent definition for type field_mask.FieldMask"

[cdelguercio]

I'm trying to build a library I wrote to deal with Google Cloud pubsub, but I've ran into a strange error. When I run Bazel I get:

ERROR: /home/.../external/com_google_cloud_go/pubsub/BUILD.bazel:3:1: GoCompile external/com_google_cloud_go/pubsub/linux_amd64_stripped/go_default_library~/cloud.google.com/go/pubsub.a failed (Exit 1) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/proto/wkt/linux_amd64_stripped/field_mask_go_proto~/google.golang.org/genproto/protobuf/field_mask/field_mask.pb.go:21:0: inconsistent definition for type field_mask.FieldMask during import struct { Paths []string "protobuf:\"bytes,1,rep,name=paths\" json:\"paths,omitempty\"" } (in "cloud.google.com/go/pubsub/apiv1") struct { Paths []string "protobuf:\"bytes,1,rep,name=paths\" json:\"paths,omitempty\""; XXX_NoUnkeyedLiteral struct {} "json:\"-\""; XXX_unrecognized []byte "json:\"-\""; XXX_sizecache int32 "json:\"-\"" } (in "google.golang.org/genproto/protobuf/field_mask") GoCompile: error running subcommand: exit status 1

Here's my BUILD.bazel

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

go_library(
    name = "go_default_library",
    srcs = [
        "google_pubsub.go",
    ],
    importpath = "path/to/my/lib/pubsub",
    visibility = ["//visibility:public"],
    deps = [
        "@com_google_cloud_go//pubsub:go_default_library",
    ],
)

And the relevant parts of my WORKSPACE

# ------------------------------------------------------------------------------
http_archive(
    name = "com_google_protobuf",
    sha256 = "4ffd420f39f226e96aebc3554f9c66a912f6cad6261f39f194f16af8a1f6dab2",
    strip_prefix = "protobuf-3.5.2",
    urls = ["https://github.com/google/protobuf/archive/v3.5.2.tar.gz"],
)

http_archive(
    name = "io_bazel_rules_go",
    url = "https://github.com/bazelbuild/rules_go/releases/download/0.12.0/rules_go-0.12.0.tar.gz",  # May 8, 2018
    sha256 = "c1f52b8789218bb1542ed362c4f7de7052abcf254d865d96fb7ba6d44bc15ee3",
)
http_archive(
    name = "bazel_gazelle",
    url = "https://github.com/bazelbuild/bazel-gazelle/releases/download/0.12.0/bazel-gazelle-0.12.0.tar.gz",
    sha256 = "ddedc7aaeb61f2654d7d7d4fd7940052ea992ccdb031b8f9797ed143ac7e8d43",
)
load("@io_bazel_rules_go//go:def.bzl", "go_rules_dependencies", "go_register_toolchains")
go_rules_dependencies()
go_register_toolchains()
load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies", "go_repository")
gazelle_dependencies()

go_repository(
    name = "com_github_golang_protobuf",
    importpath = "github.com/golang/protobuf",
    # commit = "e09c5db296004fbe3f74490e84dcd62c3c5ddb1b",  # March 28, 2018
    tag = "v1.1.0",  # April 30, 2018
)

go_repository(
    name = "com_google_cloud_go",
    importpath = "cloud.google.com/go",
    tag = "v0.22.0",  # May 9, 2018
)

# needed by com_google_cloud_go
go_repository(
    name = "org_golang_google_api",
    importpath = "google.golang.org/api",
    commit = "aedc137bffcaca05f836e35c6d182fcb7a68b1c0",  # May 17, 2018
)

go_repository(
    name = "org_golang_x_sync",
    importpath = "golang.org/x/sync",
    commit = "1d60e4601c6fd243af51cc01ddf169918a5407ca",  # March 14, 2018
)

go_repository(
    name = "org_golang_x_oauth2",
    importpath = "golang.org/x/oauth2",
    commit = "cdc340f7c179dbbfa4afd43b7614e8fcadde4269",  # May 2, 2018
)

go_repository(
    name = "io_opencensus_go",
    importpath = "go.opencensus.io",
    tag = "v0.9.0",  # May 1, 2018
)

go_repository(
    name = "com_github_googleapis_gax_go",
    importpath = "github.com/googleapis/gax-go",
    tag = "v2.0.0",  # September 14, 2017
)

Do I have two conflicting repositories somehow?

[jayconrod]

I think you have conflicting packages for the Well Known Types getting linked into your build. Gazelle resolves Go imports of WKTs to @io_bazel_rules_go//proto/wkt, but this is quite recent, and there are a lot of build files that reference the old targets out there.

Try using rules_go ca213b3006c8eed6b3f1ea649cab36b817901b46 (currently tip of master). That introduces aliases for WKT libraries so that fewer conflicts are possible. You may also need to avoid declaring com_github_golang_protobuf explicitly; also watch out for org_golang_google_genproto, though it doesn't look like you're declaring that.

[cdelguercio]

Forgot to mention that your suggestion completely worked. Thanks!

[adieu]

I had the same issue. Solved it by replacing the deps //protobuf/field_mask:go_default_library to @io_bazel_rules_go//proto/wkt:field_mask_go_proto in @org_golang_google_genproto//googleapis/pubsub/v1/BUILD.bazel

[dadrian]

I had the same issue, solved by explicitly depending on the latest org_golang_google_genproto before I called go_rules_dependencies().