6.0.0

NEW FEATURES

When used with Bazel 7, Protobuf Toolchainization is now available. This allows you to choose where the protobuf compiler (protoc) comes from, as well as configure a toolchain for each language you generate proto stubs for.

This de-couples rules_proto from the https://github.com/protocolbuffers/protobuf repository; rules_proto no longer depends on com_google_protobuf. The Bazel rules in that repository are now maintained by the protobuf team for Google use cases, and may diverge from rules_proto over time.

rules_proto does not include the toolchain implementation. See https://registry.bazel.build/modules/toolchains_protoc for an example module that registers the prebuilt binary from https://github.com/protocolbuffers/protobuf/releases.

The tracking issue for this feature is #179

BREAKING CHANGES

Upgrading from rules_proto 5.x requires some changes:

• The load site for rules_proto_toolchains has changed. See the new WORKSPACE snippet below.
• As mentioned above, rules_proto no longer depends on the protobuf repo (commonly as com_google_protobuf). As a result, the rules_proto_dependencies macro no longer fetches one. For WORKSPACE users, this may affect what version of protobuf you end up with. We recommend explicitly fetching com_google_protobuf early in the WORKSPACE file, as the first declaration wins.

Install

Using bzlmod with Bazel 6 or later:

1. [Bazel 6] Add common --enable_bzlmod to .bazelrc.

2. Add to your MODULE.bazel file:

bazel_dep(name = "rules_proto", version = "6.0.0")

Using WORKSPACE:

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "rules_proto",
    sha256 = "303e86e722a520f6f326a50b41cfc16b98fe6d1955ce46642a5b7a67c11c0f5d",
    strip_prefix = "rules_proto-6.0.0",
    url = "https://github.com/bazelbuild/rules_proto/releases/download/6.0.0/rules_proto-6.0.0.tar.gz",
)

load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies")
rules_proto_dependencies()

load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
rules_proto_toolchains()

What's Changed

• Upgrade WORKSPACE snipped to 4.0.0 release by @Yannic in #99
• Remove deleted buildkite pipeline from readme by @Yannic in #98
• Update rules_java to HEAD by @Bencodes in #102
• Update bazel skylib version to prevent failures on newer Bazel versions. by @comius in #104
• Update protobuf to 3.19.1 by @thii in #108
• Upgrade to protobuf 3.19.2 by @dhalperi in #109
• Update code annotations to 'starlark' by @aignas in #105
• Add link to proto/grpc docs on rules authors SIG by @alexeagle in #111
• [Zlib] update zlib version to zlib-1.2.12 by @ThomasCJY in #117
• Update protobuf to 3.20.0 by @thii in #113
• Update readme to point to the latest version by @comius in #124
• migrating to usage of rbe_preconfig and remove bazel-toolchains by @aranguyen in #134
• Bump rules_cc to 2f8c04c by @shaldengeki in #130
• update googletest by @aranguyen in #137
• Update protobuf to v21.5 by @sagmor in #139
• Internal change by @copybara-service in #143
• Test automatic import to Piper by @kotlaja in #145
• Add MODULE.bazel to rules proto by @comius in #147
• Test automatic import to Piper by @kotlaja in #146
• fix jar shasums for protobuf java/util by @perezd in #150
• doc: point users to the release page by @alexeagle in #149
• Add protobuf_lite target to protobuf_workspace by @shaldengeki in #131
• Workaround repository name for bzlmod by @comius in #156
• Update protobuf to v21.7 by @neumann-nico in #154
• Changing bazel skylib version from 1.1.1 to 1.3.0 by @Clement-Jean in #158
• Update versions of protobuf by @comius in #161
• docs: explain the roadmap by @alexeagle in #180
• Add protobuf-team to CODEOWNERS by @comius in #183
• chore: add a pre-commit hook config. by @alexeagle in #184
• refactor: remove protobuf_workspace by @thesayyn in #181
• docs: begin generating docs for defs by @thesayyn in #186
• chore: automate releases by @alexeagle in #189
• fix: executable bit for release shell script by @alexeagle in #190
• chore: add missing file needed by release automation by @alexeagle in #191
• Update release_prep.sh by @alexeagle in #192
• chore: add config for Publish to BCR app by @alexeagle in #193
• feat: introduce toolchain helper by @thesayyn in #194
• fix: presubmit does not have access to tests by @thesayyn in #196
• fix: set allowlist_different_package conditionally by @thesayyn in #199
• chore: update protobuf to 23.1 by @benjamin-bader in #200
• fix: add bazel versions tested to presubmit by @thesayyn in #202
• chore: fix stardoc targets by @alexeagle in #209

New Contributors

• @Bencodes made their first contribution in #102
• @thii made their first contribution in #108
• @dhalperi made their first contribution in #109
• @aignas made their first contribution in #105
• @alexeagle made their first contribution in #111
• @ThomasCJY made their first contribution in #117
• @aranguyen made their first contribution in #134
• @shaldengeki made their first contribution in #130
• @sagmor made their first contribution in #139
• @copybara-service made their first contribution in #143
• @kotlaja made their first contribution in #145
• @perezd made their first contribution in #150
• @neumann-nico made their first contribution in #154
• @Clement-Jean made their first contribution in #158
• @thesayyn made their first contribution in #181
• @benjamin-bader made their first contribution in #200

Full Changelog: 4.0.0...6.0.0