Steps to reproduce:
python bootstrap.py ./ENV --never-download --extra-search-dir python_packages/
The install_pip function in the generated bootstrap file will incorrectly pick the other package that begins with "pip-", and treat it as the real pip package to install. Because of this, the real pip is never installed into the virtualenv, and thus the command is unavailable for use.
The regex for finding the package should be more specific, or it should run some sort of test to determine which package is the real pip.