nesfab 1.6 (new formula)

Formula/n/nesfab.rb

@@ -0,0 +1,64 @@
+class Nesfab < Formula
+  desc "Programming language that targets the Nintendo Entertainment System"
+  homepage "https://pubby.games/nesfab.html"
+  # For this version only, point to a specific commit. post-1.6, this will point to a tagged release.
+  url "https://github.com/pubby/nesfab/archive/da18a43dc7b941cc4c56c949303aa37633fdc1b0.tar.gz"
+  version "1.6"
+  sha256 "bfd8c497df0d87138fda9e5de61d1ab5a36fb1951eeaed413b6619032b711745"
+  license "GPL-3.0-only"
+
+  depends_on "boost"
+  # The libc++ on Ventura is missing C++20 features this codebase depends on.
+  depends_on macos: :sonoma
+  on_linux do
+    depends_on "gcc" => :build
+  end
+
+  fails_with :clang do
+    build 1599
+    cause "Missing std::lexicographical_compare_three_way"
+  end
+
+  def install
+    # Native in-repo build puts the Git object ID into the binary for the --version
+    # string. It's not necessary functionality, but the string looks weird if the
+    # SHA is totally empty, so we'll at least say where it's from.
+    args = ["GIT_COMMIT=homebrew", "CXX=#{ENV.cxx}"]
+
+    args << "ARCH=" if Hardware::CPU.arm?
+
+    system "make", *args, "release"
+    bin.install "nesfab" => "nesfab-release"
+
+    system "make", "clean"
+    # `debug` flavor isn't about the NESFab binary, it's about the NESFab compiler
+    # inserting runtime checks in the generated code. The typical development
+    # workflow is to use the `debug` flavor most of the time, but ship the output
+    # of the `release` flavor. Hence, the binary called "nesfab" is debug and
+    # there's a separately named binary for generating release games.
+    system "make", *args, "debug"
+    bin.install "nesfab"
+  end
+
+  test do
+    (testpath/"example.fab").write <<~NESFAB
+      vars /sound
+          UU pitch = 1000
+
+      fn play_sound()
+          {$4015}(%100)
+          {$4008}($FF)
+          {$400A}(pitch.a)
+          {$400B}(pitch.b & %111)
+
+      mode main()
+        {$2000}(%10000000)
+        while true
+            pitch *= 1.01
+            play_sound()
+            nmi
+    NESFAB
+    system bin/"nesfab", "example.fab", "--output", "game.nes"
+    assert_path_exists testpath/"game.nes"
+  end
+end