devstack ++ failed ++ kill ++ set +o xtrace curl -O https://pypi.python.org/packages/source/p/pip/pip-1.4.1.tar.gz

Error
=====
+ uninstall_package python-pip
+ is_ubuntu
+ [[ -z deb ]]
+ '[' deb = deb ']'
+ apt_get purge python-pip
+ [[ '' = \T\r\u\e ]]
+ [[ -z purge python-pip ]]
+ local sudo=sudo
++ id -u
+ [[ 1005 = \0 ]]
+ sudo DEBIAN_FRONTEND=noninteractive http_proxy= https_proxy= no_proxy= apt-get --option Dpkg::Options::=--force-confold --assume-yes purge python-pip
Reading package lists... Done
Building dependency tree      
Reading state information... Done
Package python-pip is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 24 not upgraded.
+ [[ -n '' ]]
+ install_pip_tarball
+ cd /home/stackuser/openstack/devstack/files
+ curl -O https://pypi.python.org/packages/source/p/pip/pip-1.4.1.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (7) couldn't connect to host
++ failed
++ local r=1
+++ jobs -p
++ kill
++ set +o xtrace

Fix:
===
a) Check yout internet connectivity
b) Check http and https access