BUILD

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

go_prefix("rsc")

go_library(
	name = "go_default_library",
	srcs = ["hello.go"],
)

go_binary(
	name = "hello",
	library = ":go_default_library",
)

go-boringcrypto.bzl

load("@io_bazel_rules_go//go/private:toolchain.bzl", "go_sdk_repository", "go_repository_select")
load("@io_bazel_rules_go//go/private:repository_tools.bzl", "go_repository_tools")
load("@io_bazel_rules_go//go/private:go_repository.bzl", "go_repository")

def go_repositories(go_version = None):
  go_sdk_repository(
      name = "go1_8_3_linux_amd64",
      url = "https://go-boringcrypto.storage.googleapis.com/go1.8.3b2.linux-amd64.tar.gz",
      sha256 = "a453918b6ed0208748b2d6e0def31abf528d649d5cd8ecc5b21c4fd46eb38aa1",
      strip_prefix = "go",
  )
  
  # Needed for gazelle and wtool
  native.http_archive(
      name = "com_github_bazelbuild_buildtools",
      url = "https://codeload.github.com/bazelbuild/buildtools/zip/d5dcc29f2304aa28c29ecb8337d52bb9de908e0c",
      strip_prefix = "buildtools-d5dcc29f2304aa28c29ecb8337d52bb9de908e0c",
      type = "zip",
  )
  
  # Needed for fetch repo
  go_repository(
      name = "org_golang_x_tools",
      importpath = "golang.org/x/tools",
      urls = ["https://codeload.github.com/golang/tools/zip/3d92dd60033c312e3ae7cac319c792271cf67e37"],
      strip_prefix = "tools-3d92dd60033c312e3ae7cac319c792271cf67e37",
      type = "zip",
  )
  
  go_repository_select(name = "io_bazel_rules_go_toolchain", go_version = go_version)
  go_repository_tools(name = "io_bazel_rules_go_repository_tools")

hello.go

package main

import "runtime"

func main() {
	println("hello from", runtime.Version())
}

WORKSPACE

git_repository(
    name = "io_bazel_rules_go",
    remote = "https://github.com/bazelbuild/rules_go.git",
    tag = "0.5.3",
)

load(":go-boringcrypto.bzl", "go_repositories")

go_repositories(go_version = "1.8.3")

$ bazel run :hello
____Loading complete.  Analyzing...
____Found 1 target...
____Building...
____[0 / 1] BazelWorkspaceStatusAction stable-status.txt
Target //:hello up-to-date:
  bazel-bin/hello
____Elapsed time: 0.292s, Critical Path: 0.01s

____Running command line: bazel-bin/hello
hello from go1.9rc2.boringcrypto.r1
$