Install fails on "invalid" install_requires definition

Between 11.1.4 and 11.1.5 pip installs for pipenv stopped working in my centos 7 containers

# python --version
Python 2.7.5

# pip --version
pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)

# pip install pipenv==11.1.5
Collecting pipenv==11.1.5
  Downloading pipenv-11.1.5.tar.gz (4.1MB)
    100% |################################| 4.1MB 393kB/s
    Complete output from command python setup.py egg_info:
    error in pipenv setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers

Version 11.1.4 installs successfully.

Repro:

$ docker run -ti --rm centos:7 bash
# yum -y install epel-release
# yum -y install python2-pip
# pip install pipenv==11.1.5

[jeff-minard-ck]

Just using the default installed on the os.

Yes, pip install --upgrade setuptools does fix this. Merely upgrading pip, however, does not.

[kennethreitz]

Closing, as this is in our awareness now, and we know the fix.