Go rules

• Support for transitive link stamping. You can now set x_defs attributes in go_library rules. Any binary rules that depend on those libraries (directly or transitively) will apply those definitions at link time. See Defines and Stamping for more information.
• Refactored rules and toolchain internals. This doesn't affect normal usage of Go rules, but if you maintain Bazel rules that depend on Go providers and toolchains, see documentation in go/toolchains.rst, especially on GoContext and go_context.
• The library attribute is now deprecated. Please migrate to embed instead. gazelle fix will do this for you automatically.
• Several fixes for cgo, Windows, and ppc64.
• Fixed a bug in the code used to check the minimum Bazel version.

Proto rules

• Support for gogo proto. See GOGO_VARIANTS in proto/BUILD.bazel for available compiler plugins. See gogo/BUILD.bazel for an example.
• Proto files no longer need to set option go_package, and the proto package doesn't need to match the importpath explicitly set in go_proto_library.

Gazelle

Reminder: the old Gazelle tree at go/tools/gazelle is deprecated and will be removed soon (#1199). The new location is github.com/bazelbuild/bazel-gazelle. Please update any tooling you have that builds Gazelle at master.

WORKSPACE code

To use this release, add this code to your WORKSPACE file:

http_archive(
    name = "io_bazel_rules_go",
    url = "https://github.com/bazelbuild/rules_go/releases/download/0.9.0/rules_go-0.9.0.tar.gz",
    sha256 = "4d8d6244320dd751590f9100cf39fd7a4b75cd901e1f3ffdfd6f048328883695",
)
load("@io_bazel_rules_go//go:def.bzl", "go_rules_dependencies", "go_register_toolchains")
go_rules_dependencies()
go_register_toolchains()

Direct download: rules_go-0.9.0.tar.gz