pipchecker doesn't works with latest pip version

[dvl]

Since I've updated pip to latest version I can't use pipchecker anymore, if I downgrade pip to previous version it works fine.

$ ./manage.py pipchecker
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/django/core/management/base.py", line 533, in handle
    return self.handle_noargs(**options)
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/django_extensions/management/utils.py", line 77, in inner
    ret = func(self, *args, **kwargs)
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/django_extensions/management/commands/pipchecker.py", line 72, in handle_noargs
    for req in parse_requirements(filename, options=mockoptions):
  File "/home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages/pip/req/req_file.py", line 19, in parse_requirements
    "parse_requirements() missing 1 required keyword argument: "
TypeError: parse_requirements() missing 1 required keyword argument: 'session'

$ pip --version
pip 6.0.8 from /home/dvl/.virtualenvs/infobusca/lib/python3.4/site-packages (python 3.4)

[trbs]

Thanks for reporting this !

This fix also works for me on 1.5.6 up to 6.0.8.
Could you please test it ?

It also leaves room for further improvements by allowing to support pip command line options like --cache-dir and --cert etc.

[dvl]

The command is working now, but it's failing to find some packages.

Example:

# requirements.txt
Django==1.7.4  # the package name is capitalized on pypi
model_mommy==1.2.3  # the package name has underscore on pypi

with pip 6.0.8 I got the following output:

$ m pipchecker        
Django 1.7.4                     release is not on pypi (check capitalization and/or --extra-index-url)
model-mommy 1.2.3                release is not on pypi (check capitalization and/or --extra-index-url)

(even changing capitalization the result is the same)

and with pip 1.5.6:

$ m pipchecker
Django 1.7.4                     1.8b1 available

Thanks for your help

[kevgathuku]

@dvl @trbs I've submitted a patch that for now fixes the issue with packages starting with an uppercase letter not being parsed correctly.
Previously the package name was being converted to lowercase hence not being detected correctly.
I've tested it on pip 6.0.8
Would really love to hear your feedback on it.

[kevgathuku]

Here's the output I'm getting

(generator)kevin@kingkev-pc ~/code/projects/redditclone $ ./manage.py pipchecker
django-toolbelt                          not installed
Pillow 2.7.0                     2.8.1 available
Django 1.7.4                     1.8 available
prospector 0.9.9                 0.10 available