bzl_library target @io_bazel_rules_go//go:go_lib

As well as `@io_bazel_rules_go//proto:proto_lib` as a dependency of
`@io_bazel_rules_go//go:go_lib`. This is needed to generate Stardoc
documentation for rule sets that themselves depend on `rules_go`.

go/BUILD.bazel

@@ -1,3 +1,5 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
 filegroup(
     name = "all_files",
     testonly = True,
@@ -21,6 +23,13 @@ filegroup(
     visibility = ["//visibility:public"],
 )
 
+bzl_library(
+    name = "go_lib",
+    srcs = [":all_rules"],
+    deps = ["//proto:proto_lib"],
+    visibility = ["//visibility:public"],
+)
+
 toolchain_type(
     name = "toolchain",
     visibility = ["//visibility:public"],

proto/BUILD.bazel

@@ -1,3 +1,4 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
 load(
     "//proto:compiler.bzl",
     "go_proto_compiler",
@@ -112,11 +113,17 @@ go_proto_compiler(
 
 filegroup(
     name = "all_rules",
-    testonly = True,
     srcs = glob(["*.bzl"]) + ["//proto/wkt:all_rules"],
     visibility = ["//:__subpackages__"],
 )
 
+bzl_library(
+    name = "proto_lib",
+    srcs = [":all_rules"],
+    deps = [],
+    visibility = ["//visibility:public"],
+)
+
 filegroup(
     name = "all_files",
     testonly = True,

proto/wkt/BUILD.bazel

@@ -165,7 +165,6 @@ go_proto_library(
 
 filegroup(
     name = "all_rules",
-    testonly = True,
     srcs = glob(["*.bzl"]),
     visibility = ["//visibility:public"],
 )