Unable to retrieve the package version

[leibowitz]

• 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: macOS Catalina 10.15.2

• Poetry version: 1.0.5

• Link of a Gist with the contents of your pyproject.toml file: https://gist.githubusercontent.com/leibowitz/ac9f42e0b3925ca7d01f81e26f3bb292/raw/009eef68c7527d486b4538a60503cbdaea3b0a1a/pyproject.toml

Issue

I am trying to install a package from a git repository (because I had to fork the original package, and I haven't published it to pypi) with:

poetry add git+https://github.com/carlospalol/django-moneyfield.git

But I get the following error:

[RuntimeError]
Unable to retrieve the package version for /var/folders/5f/134_dwks64jfppffv26mvkbr0000gn/T/pypoetry-git-django-moneyfieldrvmFVf

The package is django-moneyfield, and the setup.py is using setup from distutils:

from distutils.core import setup

This seems to be the issue, as any package I try to install in this way (using the git repository url) which has this import seems to fail with the same error.

Using poetry -vvv return the traceback, in case it is useful:

Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/clikit/console_application.py", line 131, in run
status_code = command.handle(parsed_args, io)
File "/usr/local/lib/python2.7/site-packages/clikit/api/command/command.py", line 120, in handle
status_code = self._do_handle(args, io)
File "/usr/local/lib/python2.7/site-packages/clikit/api/command/command.py", line 171, in _do_handle
return getattr(handler, handler_method)(args, io, self)
File "/usr/local/lib/python2.7/site-packages/cleo/commands/command.py", line 92, in wrap_handle
return self.handle()
File "/usr/local/lib/python2.7/site-packages/poetry/console/commands/add.py", line 89, in handle
packages, allow_prereleases=self.option('allow-prereleases')
File "/usr/local/lib/python2.7/site-packages/poetry/console/commands/init.py", line 293, in _determine_requirements
requires = self._parse_requirements(requires)
File "/usr/local/lib/python2.7/site-packages/poetry/console/commands/init.py", line 381, in _parse_requirements
"git", url.url, reference=pair.get("rev")
File "/usr/local/lib/python2.7/site-packages/poetry/puzzle/provider.py", line 204, in get_package_from_vcs
package = cls.get_package_from_directory(tmp_dir, name=name)
File "/usr/local/lib/python2.7/site-packages/poetry/puzzle/provider.py", line 345, in get_package_from_directory
directory

Reading other issues, I can see some comments about installing setuptools, to allow parsing. This doesn't seem to help.
Reference: #673 (comment)

Another one mention changing the setup.py to use setuptools. Is this the only potential solution I could try?
Reference: #835 (comment)

I tried with python 3.7.4 (with poetry add -vvv ...), and got another error:

[AttributeError]
'NoneType' object has no attribute 'group'

Not sure what this one is all about. Doesn't even seems related to this issue... Indeed, removing the -vvv argument (using poetry add ...) seems to work ?! Therefore, ignoring the NoneType error, it seems to be related to the python version.
Is this then related to #661?

Feel free to close if this is a duplicate issue of the above

[finswimmer]

Hello @leibowitz,

the issue is the same as explained in #673. poetry itself is running with python2. There there is no support for parsing the setup.py, which is necessary to receive the version number.

The only chance to get it work is to make sure poetry runs with python3.

fin swimmer

[leibowitz]

Did you mean it is a duplicate of #661?

[cyberbudy]

Have the same issue while installing this package https://github.com/preusx/python-chain-caller
Tried the last stable and prerelease versions

[finswimmer]

@cyberbudy this work for me with no problems with the latest pre-release (1.1.0b2)

[github-actions]

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