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+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
+
+# Hacking already pins down pep8, pyflakes and flake8
+hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
+openstackdocstheme>=1.17.0 # Apache-2.0
+sphinx>=1.6.2 # BSD