problem with importing `pip._internal.main` as `pip_exec`

[ksimmi]

Hello!
Today I started new project with pyenv and python-3.8.0 and I had problems with installation packages via pundle. For example I putted one line pyramid into requirements.txt and then I had an error:

pundle install
Install some packages
try <pip._vendor.distlib.locators.SimpleScrapingLocator object at 0x7fb64044cc10> for pyramid
try <pip._vendor.distlib.locators.JSONLocator object at 0x7fb6404af970> for pyramid
Use temp dir /tmp/tmpdizbrgtx
pip install --no-deps -t /tmp/tmpdizbrgtx https://pypi.python.org/packages/12/e5/8cffc593b70ee6392ea08e8562843166895b96cf33ace892229bcfca410e/pyramid-1.8.3.tar.gz
Traceback (most recent call last):
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 242, in locate_and_install
    pip_exec([
TypeError: 'module' object is not callable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ksimmi/.pyenv/versions/3.8.0/bin/pundle", line 10, in <module>
    sys.exit(CmdRegister.main())
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 1027, in main
    cls.commands[alias]()
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 1033, in cmd_install
    install_all(**create_parser_or_exit())
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 922, in install_all
    suite.install()
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 477, in install
    state.reveal_requirements(self, install=install)
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 334, in reveal_requirements
    dist = self.check_installed_version(suite, install=install)
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 302, in check_installed_version
    dist = self.requirement.locate_and_install(suite, installed=self.get_installed())
  File "/home/ksimmi/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pundle.py", line 252, in locate_and_install
    raise PundleException('%s was not installed due error %s' % (self.egg or loc_dist.name, exc))
pundle.PundleException: pyramid was not installed due error 'module' object is not callable

When I replaced pyramid line in requirements.txt with django I had the same error. I repeated it with lots of packages with the same result.

I don't know why but It behaves because of how Python imports the main method from pip._internal. The imported method is not a method! The method's type is a module. I fixed this behavior by simple check of type of the imported method's type and if it module I fetching method from it.

[ksimmi]

Hi.
As you can see I made a pull request to make possible run pundle in situation when Python importing pip._internal.main as non callable pip_exec. Today I doubt and it is possible that my code does not make sense. Why? Because I tried to use pundle with pyenv. As ruby developer I expected that both tools compatible like bundle and rbenv in Ruby but they are not. I lost day with trying to run them together but now I belive this is not possible. I will be hapy if I am not right and you will tell me how to use them together. But if I realy right I hope that you will write about it in pundle's documentation with big and bold font.

P.S. pundle is a good idea as tool but bad name, especially for developers who knows Ruby.
Thank you!

[Deepwalker]

BTW I'm working with pyenv and it works fine. Not sure what problem did you have.
And what is bad about name?