Better fix for #931, stays backwards compatible to older setuptools v…

…ersions

python-setuptools on OctoPi is quite old and trying to update in a local virtualenv apparently CAN cause problems (we had this with python-serial too a while back), so a backwards compatible solution is better here.

setup.py

@@ -13,7 +13,6 @@
 
 # Requirements for our application
 INSTALL_REQUIRES = [
-	"setuptools==7.0",
 	"flask>=0.9,<0.11",
 	"werkzeug==0.8.3",
 	"tornado==4.0.1",

src/octoprint_setuptools/__init__.py

@@ -491,7 +491,8 @@ def create_plugin_setup_parameters(identifier="todo", name="TODO", version="0.1"
 		cmdclass.update(get_babel_commandclasses(pot_file=pot_file, output_dir=translation_dir, bundled_dir=bundled_dir, pack_name_prefix="{name}-i18n-".format(**locals()), pack_path_prefix="_plugins/{identifier}/".format(**locals())))
 
 	from setuptools import find_packages
-	packages = find_packages(where=source_folder, exclude=ignored_packages, include=[package, "{package}.*".format(**locals())] + additional_packages)
+	packages = list(set([package] + filter(lambda x: x.startswith("{package}.".format(package=package)), find_packages(where=source_folder, exclude=ignored_packages)) + additional_packages))
+	print("Found packages: {packages!r}".format(**locals()))
 
 	return dict(
 		name=name,