docutils: revert to restore venv

Signed-off-by: Michael Cho <[email protected]>

Formula/d/docutils.rb

@@ -1,7 +1,9 @@
 class Docutils < Formula
+  include Language::Python::Virtualenv
+
   desc "Text processing system for reStructuredText"
   homepage "https://docutils.sourceforge.io"
-  url "https://downloads.sourceforge.net/project/docutils/docutils/0.20.1/docutils-0.20.1.tar.gz"
+  url "https://files.pythonhosted.org/packages/1f/53/a5da4f2c5739cf66290fac1431ee52aff6851c7c8ffd8264f13affd7bcdd/docutils-0.20.1.tar.gz"
   sha256 "f08a4e276c3a1583a86dce3e34aba3fe04d02bba2dd51ed16106244e8a923e3b"
   license all_of: [:public_domain, "BSD-2-Clause", "GPL-3.0-or-later", "Python-2.0"]
   revision 1
@@ -17,42 +19,20 @@ class Docutils < Formula
     sha256 cellar: :any_skip_relocation, x86_64_linux:   "480c0b72303e68588d67dd37efc0b55d3971f67561c765f3947d1af96103d790"
   end
 
-  depends_on "python-setuptools" => :build
-  depends_on "[email protected]" => [:build, :test]
-  depends_on "[email protected]" => [:build, :test]
-
-  def pythons
-    deps.map(&:to_formula)
-        .select { |f| f.name.start_with?("python@") }
-        .sort_by(&:version)
-  end
+  depends_on "[email protected]"
 
   def install
-    pythons.each do |python|
-      python_exe = python.opt_libexec/"bin/python"
-      system python_exe, "-m", "pip", "install", *std_pip_args, "."
-    end
-
+    virtualenv_install_with_resources
     bin.glob("*.py") do |f|
       bin.install_symlink f => f.basename(".py")
     end
   end
 
-  def caveats
-    <<~EOS
-      To run front-end tools, you may need to `brew install #{pythons.last}`
-    EOS
-  end
-
   test do
     cp prefix/"README.txt", testpath
     mkdir_p testpath/"docs"
     touch testpath/"docs"/"header0.txt"
     system bin/"rst2man.py", testpath/"README.txt"
     system bin/"rst2man", testpath/"README.txt"
-    pythons.each do |python|
-      python_exe = python.opt_libexec/"bin/python"
-      system python_exe, "-c", "import docutils"
-    end
   end
 end