Exclude prerelease versions of Pip
Unlike Pip, easy_install does not automatically exclude prerelease
versions of packages when resolving requirements.
@@ -663,7 +663,7 @@ upgradepip()
;;
jessie)
# The system's pip does not allow updating itself.
- easy_install --upgrade 'pip<10'
+ easy_install --upgrade 'pip<10.0.0b1'
hash -r
;;
esac
