Defining install_requires in setup() causes the packages
to be downloaded from pypi by easy_install.  That defeats
the purpose of unit testing against installed system
packages, so disable the install_requires attribute.

Index: pycollada-0.7.1/setup.py
===================================================================
--- pycollada-0.7.1.orig/setup.py
+++ pycollada-0.7.1/setup.py
@@ -19,7 +19,7 @@ setup(
     author_email = 'jterrace@gmail.com',
     platforms=["any"],
     license="BSD",
-    install_requires=install_requires,
+#    install_requires=install_requires,
     extras_require = {
         'prettyprint': ["lxml"],
         'validation': ["lxml"]