`pip freeze` breaks with package installation

I am installing a package using dependency_links. It seems to install the package alright but breaks pip freeze functionality (which probably means there is a deeper install issue.) I want to be able to download the package from a custom server without any setup required outside of running setup.py.

This is my setup.py file:

from setuptools import setup

  setup(
      name='package'
      ,version='0.1.0'
      ,packages=['foo',
                 'bar'
                 ]
      ,long_description=''
      ,url='https://github.com/myrepo'
      ,install_requires=['numpy>=1.9.2'
                         ,'some_package'
                         ]
      ,dependency_links=[
          "http://custom_server/packages/some_package-0.1.0.tar.gz"
      ]               
  )

Install seems to work ok, but if I try and run pip_freeze I get the error below.

pip freeze

Error [Errno 20] Not a directory: '/Users/abc/anaconda/lib/python2.7/site-packages/some_package.egg' while executing command git rev-parse
Exception:
Traceback (most recent call last):
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/basecommand.py", line 209, in main
    status = self.run(options, args)
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/commands/freeze.py", line 70, in run
    for line in freeze(**freeze_kwargs):
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/operations/freeze.py", line 49, in freeze
    dependency_links
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/__init__.py", line 235, in from_dist
    if dist_is_editable(dist) and vcs.get_backend_name(location):
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/vcs/__init__.py", line 75, in get_backend_name
    if vc_type.controls_location(location):
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/vcs/git.py", line 266, in controls_location
    on_returncode='ignore')
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/vcs/__init__.py", line 322, in run_command
    spinner)
  File "/Users/myname/anaconda/lib/python2.7/site-packages/pip/utils/__init__.py", line 677, in call_subprocess
    cwd=cwd, env=env)
  File "/Users/myname/anaconda/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/Users/myname/anaconda/lib/python2.7/subprocess.py", line 1335, in _execute_child
    raise child_exception
OSError: [Errno 20] Not a directory: '/Users/myname/anaconda/lib/python2.7/site-packages/some_package.egg'

Solution

pip install . with --extra-index-url and --trusted-host does the trick, also if you want to install it in editable mode you can do pip install -e ..

You might still want to take a look at listing dependency_links and zip_safe option: https://pythonhosted.org/setuptools/setuptools.html#dependencies-that-aren-t-in-pypi https://pythonhosted.org/setuptools/setuptools.html#setting-the-zip-safe-flag https://github.com/irqed/octokit.py/blob/master/setup.py#L51

By the way you can specify --extra-index-url and --trusted-host in pip requirements.txt file as well.