alejandra 4.0.0 (new formula)

Adds a new formular for Alejandra, a code formatter for Nix files

Author: idleberg

Formula/a/alejandra.rb

@@ -0,0 +1,26 @@
+class Alejandra < Formula
+  desc "Command-line tool for formatting Nix Code"
+  homepage "https://kamadorueda.com/alejandra/"
+  url "https://github.com/kamadorueda/alejandra/archive/refs/tags/4.0.0.tar.gz"
+  sha256 "f3f9989c3fb6a56e2050bf5329692fae32a2b54be7c0652aa394afe4660ebb74"
+  license "Unlicense"
+  head "https://github.com/kamadorueda/alejandra.git", branch: "main"
+
+  depends_on "rust" => :build
+
+  def install
+    system "cargo", "install", *std_cargo_args(path: "src/alejandra_cli")
+  end
+
+  test do
+    assert_equal "Alejandra #{version}", shell_output("#{bin}/alejandra --version").chomp
+
+    ENV["LC_ALL"] = "en_US.UTF-8"
+    input_nix = "{description=\"Demo\";outputs={self}:{};}"
+    output_nix = "{\n  description = \"Demo\";\n  outputs = {self}: {};\n}"
+
+    (testpath/"alejandra_test.nix").write input_nix
+    system bin/"alejandra", "alejandra_test.nix"
+    assert_equal output_nix, (testpath/"alejandra_test.nix").read.strip
+  end
+end