unisonlang M3 (new formula)

Closes #104021.

Signed-off-by: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Signed-off-by: BrewTestBot <1589480+BrewTestBot@users.noreply.github.com>

Aliases/ucm

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+../Formula/unisonlang.rb

Formula/unisonlang.rb

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+require "language/node"
+
+class Unisonlang < Formula
+  desc "Friendly programming language from the future"
+  homepage "https://unison-lang.org/"
+  url "https://github.com/unisonweb/unison.git",
+      tag:      "release/M3",
+      revision: "97cce8d23147df30b0f80ae745968db09f4e1a44"
+  version "M3"
+  license "MIT"
+  head "https://github.com/unisonweb/unison.git", branch: "trunk"
+
+  depends_on "ghc" => :build
+  depends_on "haskell-stack" => :build
+  depends_on "node" => :build
+
+  # stack/ghc currently have a number of issues building for aarch64
+  # https://github.com/unisonweb/unison/issues/3136
+  depends_on arch: :x86_64
+
+  uses_from_macos "xz" => :build
+  uses_from_macos "zlib"
+
+  resource "codebase-ui" do
+    url "https://github.com/unisonweb/codebase-ui/archive/refs/tags/release/M3.tar.gz"
+    sha256 "84be9135a821615f8fc73a0a894aa46a11c55393c43dc26e16a5ce75f8063012"
+    version "M3"
+  end
+
+  def install
+    jobs = ENV.make_jobs
+    ENV.deparallelize
+
+    stack_args = [
+      "-v",
+      "--system-ghc",
+      "--no-install-ghc",
+      "--skip-ghc-check",
+      "--copy-bins",
+      "--local-bin-path=#{buildpath}",
+    ]
+
+    system "stack", "-j#{jobs}", "build", "--flag", "unison-parser-typechecker:optimized", *stack_args
+
+    prefix.install "unison" => "ucm"
+    bin.install_symlink prefix/"ucm"
+
+    # Build and install the web interface
+    resource("codebase-ui").stage do
+      system "npm", "install", *Language::Node.local_npm_install_args
+      system "npm", "run", "build"
+
+      prefix.install "dist/unisonLocal" => "ui"
+    end
+  end
+
+  test do
+    # Ensure the codebase-ui version matches the ucm version
+    assert_equal version, resource("codebase-ui").version
+
+    # Initialize a codebase by starting the server/repl, but then run the "exit" command
+    # once everything is set up.
+    pipe_output("#{bin}/ucm -C ./", "exit")
+
+    (testpath/"hello.u").write <<~EOS
+      helloTo : Text ->{IO, Exception} ()
+      helloTo name =
+        printLine ("Hello " ++ name)
+
+      hello : '{IO, Exception} ()
+      hello _ =
+        helloTo "Homebrew"
+    EOS
+
+    assert_match "Hello Homebrew", shell_output("#{bin}/ucm -C ./ run.file ./hello.u hello")
+  end
+end