[#12] wip: kinda understand the issue, documenting and working on fix

Gemfile

@@ -6,3 +6,5 @@ gem 'chefspec'
 gem 'kitchen-vagrant'
 
 gem 'foodcritic'
+
+gem 'chef-rewind'

README.md

@@ -65,6 +65,13 @@ To use it in a cookbook:
 include_recipe 'anaconda::default'
 ```
 
+## Warning! If you're also using the [python](https://github.com/poise/python) cookbook...
+
+You MUST include `recipe[anaconda::python_workaround]`, otherwise subsequent
+chef runs will fail. See [the
+issue](https://github.com/thmttch/chef-continuum-anaconda/issues/12) for
+details.
+
 ## Usage, recipes, attributes, and resources
 
 The main recipe is `anaconda::default`. Include it in your runlist, and it will

recipes/default.rb

@@ -12,11 +12,6 @@
 version = node.anaconda.version
 flavor = node.anaconda.flavor
 
-# hack: the standard python cookbook gets confused and tries to upgrade
-# setuptools since it can't find it; this will break the chef run.
-# explicitly set version to trick python into not upgrading setuptools
-node.force_default.python.setuptools_version = '3.6'
-
 anaconda_install_dir = "#{node.anaconda.install_root}/#{version}"
 installer = "Anaconda-#{version}-Linux-#{flavor}.sh"
 installer_path = "#{Chef::Config[:file_cache_path]}/#{installer}"

recipes/python_workaround.rb

@@ -0,0 +1,22 @@
+#
+# Cookbook Name:: anaconda
+# Recipe:: python_workaround
+#
+# Copyright (C) 2014 Matt Chu
+#
+# All rights reserved - Do Not Redistribute
+#
+
+# https://github.com/thmttch/chef-continuum-anaconda/issues/12
+
+# hack: the standard python cookbook gets confused and tries to upgrade
+# setuptools since it can't find it (TODO actually, i think because it's not
+# the latest version); this will break the chef run.
+Chef::Log.warn 'Applying the python workaround: https://github.com/thmttch/chef-continuum-anaconda/issues/12'
+
+chef_gem 'chef-rewind'
+require 'chef/rewind'
+
+unwind 'python_pip[setuptools]' do
+  ignore_failure true
+end