Fail on install (make)

[robsonpeixoto]

$ git clone git://github.com/collective/tutorial.todoapp.git --branch chapter1
Cloning into 'tutorial.todoapp'...
remote: Counting objects: 1318, done.
remote: Compressing objects: 100% (571/571), done.
remote: Total 1318 (delta 694), reused 1251 (delta 646)
Receiving objects: 100% (1318/1318), 3.39 MiB | 481.00 KiB/s, done.
Resolving deltas: 100% (694/694), done.
Checking connectivity... done
$ cd tutorial.todoapp
$ make
virtualenv -p python2.7 --no-site-packages .
Running virtualenv with interpreter /usr/bin/python2.7
New python executable in ./bin/python2.7
Also creating executable in ./bin/python
Installing Setuptools..............................................................................................................................................................................................................................done.
Installing Pip.....................................................................................................................................................................................................................................................................................................................................done.
bin/python bootstrap.py -d
Traceback (most recent call last):
  File "bootstrap.py", line 203, in <module>
    pkg_resources.Requirement.parse(setup_requirement)).location
AttributeError: 'NoneType' object has no attribute 'location'
make: ** [bin/buildout] Erro 1

$ source bin/activate
(tutorial.todoapp)$ python --version 
Python 2.7.5
(tutorial.todoapp)$ pip --version 
pip 1.4.1 from /home/rpeixoto/tmp/tutorial.todoapp/lib/python2.7/site-packages (python 2.7)
(tutorial.todoapp)$ easy_install --version 
setuptools 0.9.8

[robsonpeixoto]

Change on Makefile

-       bin/python bootstrap.py -d
+       bin/python bootstrap.py