"Unable to retrieve the package version for" git repository

[src-r-r]

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Ubuntu 18.10
• Poetry version: 1.0.5 (Python 3.7.3)
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/src-r-r/0e49d141226c53f32efd8eedddee05a6

Issue

This is a pretty straight-forward error. I have (essentially) a blank project. I'm just trying to add packages at this point. I'm within a virtual environment my-project which uses Python 3.7.

(my-project) user@host:~/projects/MyProject/my-project$ python -m poetry add git+https://github.com/django-nonrel/django.git -vvv
Using virtualenv: /home/user/.virtualenvs/my-project

[RuntimeError]
Unable to retrieve the package version for /tmp/pypoetry-git-djangop_wpk047

Traceback (most recent call last):
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/clikit/console_application.py", line 131, in run
    status_code = command.handle(parsed_args, io)
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/clikit/api/command/command.py", line 120, in handle
    status_code = self._do_handle(args, io)
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/clikit/api/command/command.py", line 171, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/poetry/console/commands/add.py", line 89, in handle
    packages, allow_prereleases=self.option('allow-prereleases')
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/poetry/console/commands/init.py", line 293, in _determine_requirements
    requires = self._parse_requirements(requires)
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/poetry/console/commands/init.py", line 381, in _parse_requirements
    "git", url.url, reference=pair.get("rev")
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/poetry/puzzle/provider.py", line 204, in get_package_from_vcs
    package = cls.get_package_from_directory(tmp_dir, name=name)
  File "/home/user/.virtualenvs/my-project/lib/python3.7/site-packages/poetry/puzzle/provider.py", line 345, in get_package_from_directory
    directory

As a reference, here's what happens when I do a PIP install (It's successful):

(my-project) user@host:~/projects/MyProject/my-project$ pip install git+https://github.com/django-nonrel/django.git
Collecting git+https://github.com/django-nonrel/django.git
  Cloning https://github.com/django-nonrel/django.git to /tmp/pip-req-build-pbhc2wos
  Running command git clone -q https://github.com/django-nonrel/django.git /tmp/pip-req-build-pbhc2wos
Building wheels for collected packages: Django
  Building wheel for Django (setup.py) ... done
  Created wheel for Django: filename=Django-1.6.11-py2.py3-none-any.whl size=6687483 sha256=db88f6db3fd029483634d63d8c76ef677738efa7b2847371ad0860f7a3cfbd4f
  Stored in directory: /tmp/pip-ephem-wheel-cache-9q8m_c7h/wheels/a2/75/4e/fe05a7f75cbe771a6d30182e5feeebbca19482ec7b0effc741
Successfully built Django
Installing collected packages: Django
Successfully installed Django-1.6.11

[evstratbg]

+1

[finswimmer]

Hello,

poetry needs to get the package name and version before it is able to install it. In the given repository poetry tries to parse the setup.py to get this information. But this file doesn't provide this information. Instead it loaded it from another resource during build process:

# Dynamically calculate the version based on django.VERSION.
version = __import__('django').get_version()

As poetry doesn't execute this file it cannot get the version number.

So this is (at least at the moment) by design.

fin swimmer

[evstratbg]

BTW, I solved it. pip install showed me _ctypes error. I've just did apt install libffi-devand reinstalled python (I'm using pyenv). That's made deal

[alexkornitzer]

@finswimmer Just hit this as well, is this not a regression as it works in poetry 0.12.17? In my case when run manually python setup.py egg_info does work for the repo that is erroring in question, yet poetry 1.0.5 is still failing.

[mfoglio]

+1

[github-actions]

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