fades 5 (new formula)

Closes Homebrew/homebrew#50433.

Signed-off-by: Andrew Janke <andrew@apjanke.net>

Formula/fades.rb

@@ -0,0 +1,24 @@
+class Fades < Formula
+  desc "Automatically handle virtualenvs for python scripts"
+  homepage "http://fades.readthedocs.org/"
+  url "https://pypi.python.org/packages/source/f/fades/fades-5.tar.gz"
+  sha256 "1952f496059ba6bac535f2c07effae44a55de0654ababaa1a15879c4b3fa89c1"
+
+  head "https://github.com/PyAr/fades.git"
+
+  depends_on :python3
+
+  def install
+    pyver = Language::Python.major_minor_version "python3"
+    ENV.prepend_create_path "PYTHONPATH", libexec/"lib/python#{pyver}/site-packages"
+    system "python3", *Language::Python.setup_install_args(libexec)
+
+    bin.install Dir[libexec/"bin/*"]
+    bin.env_script_all_files(libexec/"bin", :PYTHONPATH => ENV["PYTHONPATH"])
+  end
+
+  test do
+    (testpath/"test.py").write("print('it works')")
+    system "#{bin}/fades", testpath/"test.py"
+  end
+end