go@1.6: import from homebrew/versions

Closes #10320.

Signed-off-by: JCount <JCount42@gmail.com>

Formula/go@1.6.rb

@@ -0,0 +1,108 @@
+class GoAT16 < Formula
+  desc "Go programming environment (1.6)"
+  homepage "https://golang.org"
+  url "https://storage.googleapis.com/golang/go1.6.4.src.tar.gz"
+  mirror "http://pkgs.fedoraproject.org/repo/pkgs/golang/go1.6.4.src.tar.gz/b023240be707b34059d2c114d3465c92/go1.6.4.src.tar.gz"
+  version "1.6.4"
+  sha256 "8796cc48217b59595832aa9de6db45f58706dae68c9c7fbbd78c9fdbe3cd9032"
+
+  keg_only :versioned_formula
+
+  option "without-cgo", "Build without cgo (also disables race detector)"
+  option "without-godoc", "godoc will not be installed for you"
+  option "without-race", "Build without race detector"
+
+  resource "gotools" do
+    url "https://go.googlesource.com/tools.git",
+        :branch => "release-branch.go1.6"
+  end
+
+  resource "gobootstrap" do
+    url "https://storage.googleapis.com/golang/go1.4-bootstrap-20161024.tar.gz"
+    sha256 "398c70d9d10541ba9352974cc585c43220b6d8dbcd804ba2c9bd2fbf35fab286"
+  end
+
+  # fix build on macOS Sierra by adding compatibility for new gettimeofday behavior
+  # patch derived from backported fixes to the go 1.4 release branch
+  if MacOS.version == "10.12"
+    patch do
+      url "https://raw.githubusercontent.com/Homebrew/formula-patches/9e8273e/go%401.6/go%401.6-Sierra-build.patch"
+      sha256 "9ea4feb2470f6804159b00993ba0121fec00267bb2b4f99075eb426e56a75cfc"
+    end
+  end
+
+  def install
+    # GOROOT_FINAL must be overidden later on real Go install
+    ENV["GOROOT_FINAL"] = buildpath/"gobootstrap"
+
+    # build the gobootstrap toolchain Go >=1.4
+    (buildpath/"gobootstrap").install resource("gobootstrap")
+    cd "#{buildpath}/gobootstrap/src" do
+      system "./make.bash", "--no-clean"
+    end
+
+    # This should happen after we build the test Go, just in case
+    # the bootstrap toolchain is aware of this variable too.
+    ENV["GOROOT_BOOTSTRAP"] = ENV["GOROOT_FINAL"]
+    cd "src" do
+      ENV["GOROOT_FINAL"] = libexec
+      ENV["GOOS"]         = "darwin"
+      ENV["CGO_ENABLED"]  = "0" if build.without?("cgo")
+      system "./make.bash", "--no-clean"
+    end
+
+    (buildpath/"pkg/obj").rmtree
+    rm_rf "gobootstrap" # Bootstrap not required beyond compile.
+    libexec.install Dir["*"]
+    bin.install_symlink Dir["#{libexec}/bin/go*"]
+
+    # Race detector only supported on amd64 platforms.
+    # https://golang.org/doc/articles/race_detector.html
+    if build.with?("cgo") && build.with?("race") && MacOS.prefer_64_bit?
+      system "#{bin}/go", "install", "-race", "std"
+    end
+
+    if build.with?("godoc")
+      ENV.prepend_path "PATH", bin
+      ENV["GOPATH"] = buildpath
+      (buildpath/"src/golang.org/x/tools").install resource("gotools")
+
+      if build.with? "godoc"
+        cd "src/golang.org/x/tools/cmd/godoc/" do
+          system "go", "build"
+          (libexec/"bin").install "godoc"
+        end
+        bin.install_symlink libexec/"bin/godoc"
+      end
+    end
+  end
+
+  def caveats; <<-EOS.undent
+    As of go 1.2, a valid GOPATH is required to use the `go get` command:
+      https://golang.org/doc/code.html#GOPATH
+
+    You may wish to add the GOROOT-based install location to your PATH:
+      export PATH=$PATH:#{opt_libexec}/bin
+    EOS
+  end
+
+  test do
+    (testpath/"hello.go").write <<-EOS.undent
+    package main
+    import "fmt"
+    func main() {
+        fmt.Println("Hello World")
+    }
+    EOS
+
+    # Run go fmt check for no errors then run the program.
+    # This is a a bare minimum of go working as it uses fmt, build, and run.
+    system "#{bin}/go", "fmt", "hello.go"
+    assert_equal "Hello World\n", shell_output("#{bin}/go run hello.go")
+
+    if build.with? "godoc"
+      assert File.exist?(libexec/"bin/godoc")
+      assert File.executable?(libexec/"bin/godoc")
+    end
+  end
+end

formula_renames.json

@@ -41,6 +41,7 @@
   "go-app-engine-64": "app-engine-go-64",
   "go14": "go@1.4",
   "go15": "go@1.5",
+  "go16": "go@1.6",
   "google-app-engine": "app-engine-python",
   "google-perftools": "gperftools",
   "hamsterdb": "upscaledb",