I've used the same test case as before and with python-pip version 1.5.4-1ubuntu3 this bug is now fixed. Thanks!
Setting up python-pip (1.5.4-1ubuntu3) ... Setting up python-wheel (0.24.0-1~ubuntu1) ... (trusty-amd64)root@impulse:/home/bdmurray# pip install httpie Downloading/unpacking httpie Downloading httpie-0.9.2-py2.py3-none-any.whl (66kB): 66kB downloaded Downloading/unpacking requests>=2.3.0 (from httpie) Downloading requests-2.7.0-py2.py3-none-any.whl (470kB): 470kB downloaded Downloading/unpacking Pygments>=1.5 (from httpie) Downloading Pygments-2.0.2-py2-none-any.whl (672kB): 672kB downloaded Installing collected packages: httpie, requests, Pygments Found existing installation: requests 2.2.1 Not uninstalling requests at /usr/lib/python2.7/dist-packages, owned by OS Successfully installed httpie requests Pygments Cleaning up... (trusty-amd64)root@impulse:/home/bdmurray# pip --help Usage: pip <command> [options] Commands: install Install packages. uninstall Uninstall packages. freeze Output installed packages in requirements format. list List installed packages. ** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1324391 Title: pip 1.5.4 import an invalid dependencies To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-pip/+bug/1324391/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs