go@1.21 1.21.7 (new formula)

Formula/c/clair.rb

@@ -20,7 +20,7 @@ class Clair < Formula
     sha256 cellar: :any_skip_relocation, x86_64_linux:   "bb434c8789c0d0b1fe858eb2573cd97a9c52cf34b04872b03126a10ace8f43b6"
   end
 
-  depends_on "go" => :build
+  depends_on "go@1.21" => :build # use "go" again when https://github.com/quay/clair/pull/1942 is released
 
   def install
     ldflags = %W[

Formula/c/coder.rb

@@ -15,7 +15,7 @@ class Coder < Formula
     sha256 cellar: :any_skip_relocation, x86_64_linux:   "69338571ea5bc8a0891ffa3ffe6eee65453ea35263954dd2062f49b851ae25aa"
   end
 
-  depends_on "go" => :build
+  depends_on "go@1.21" => :build # see https://github.com/coder/coder/issues/11342
 
   def install
     ldflags = %W[

Formula/g/go@1.21.rb

@@ -0,0 +1,88 @@
+class GoAT121 < Formula
+  desc "Open source programming language to build simple/reliable/efficient software"
+  homepage "https://go.dev/"
+  url "https://go.dev/dl/go1.21.7.src.tar.gz"
+  mirror "https://fossies.org/linux/misc/go1.21.7.src.tar.gz"
+  sha256 "00197ab20f33813832bff62fd93cca1c42a08cc689a32a6672ca49591959bff6"
+  license "BSD-3-Clause"
+
+  livecheck do
+    url "https://go.dev/dl/?mode=json"
+    regex(/^go[._-]?v?(1\.21(?:\.\d+)*)[._-]src\.t.+$/i)
+    strategy :json do |json, regex|
+      json.map do |release|
+        next if release["stable"] != true
+        next if release["files"].none? { |file| file["filename"].match?(regex) }
+
+        release["version"][/(\d+(?:\.\d+)+)/, 1]
+      end
+    end
+  end
+
+  keg_only :versioned_formula
+
+  depends_on "go" => :build
+
+  def install
+    ENV["GOROOT_BOOTSTRAP"] = buildpath/"gobootstrap"
+
+    cd "src" do
+      ENV["GOROOT_FINAL"] = libexec
+      # Set portable defaults for CC/CXX to be used by cgo
+      with_env(CC: "cc", CXX: "c++") { system "./make.bash" }
+    end
+
+    libexec.install Dir["*"]
+    bin.install_symlink Dir[libexec/"bin/go*"]
+
+    system bin/"go", "install", "std", "cmd"
+
+    # Remove useless files.
+    # Breaks patchelf because folder contains weird debug/test files
+    (libexec/"src/debug/elf/testdata").rmtree
+    # Binaries built for an incompatible architecture
+    (libexec/"src/runtime/pprof/testdata").rmtree
+  end
+
+  test do
+    (testpath/"hello.go").write <<~EOS
+      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")
+
+    with_env(GOOS: "freebsd", GOARCH: "amd64") do
+      system bin/"go", "build", "hello.go"
+    end
+
+    (testpath/"hello_cgo.go").write <<~EOS
+      package main
+
+      /*
+      #include <stdlib.h>
+      #include <stdio.h>
+      void hello() { printf("%s\\n", "Hello from cgo!"); fflush(stdout); }
+      */
+      import "C"
+
+      func main() {
+          C.hello()
+      }
+    EOS
+
+    # Try running a sample using cgo without CC or CXX set to ensure that the
+    # toolchain's default choice of compilers work
+    with_env(CC: nil, CXX: nil) do
+      assert_equal "Hello from cgo!\n", shell_output("#{bin}/go run hello_cgo.go")
+    end
+  end
+end

Formula/g/grafana-agent.rb

@@ -15,7 +15,7 @@ class GrafanaAgent < Formula
     sha256 cellar: :any_skip_relocation, x86_64_linux:   "e35c1ddd635a982b507cb0212a5f185b43f4f3624d0e0d230f1e8f6d719c686e"
   end
 
-  depends_on "go" => :build
+  depends_on "go@1.21" => :build # use "go" again when https://github.com/grafana/agent/pull/6139 is released
   depends_on "node" => :build
   depends_on "yarn" => :build
 

Formula/g/grafana.rb

@@ -16,7 +16,7 @@ class Grafana < Formula
     sha256 cellar: :any_skip_relocation, x86_64_linux:   "9c8d77a8b68c8cf139b3406afc79ea4ed1c7985370fbb15c537275fe9129af56"
   end
 
-  depends_on "go" => :build
+  depends_on "go@1.21" => :build # use "go" again when https://github.com/grafana/grafana/pull/82114 is released
   depends_on "node" => :build
   depends_on "yarn" => :build
 

Formula/j/juicefs.rb

@@ -21,7 +21,7 @@ class Juicefs < Formula
     sha256 cellar: :any_skip_relocation, x86_64_linux:   "4d0f01c6689b8a3ee1565cf80752214efd2e6fcd6a2edb429171bdfc440c04f5"
   end
 
-  depends_on "go" => :build
+  depends_on "go@1.21" => :build # use "go" again when https://github.com/juicedata/juicefs/pull/4340 is released
 
   def install
     system "make"