1.0.3: failure on creating environment via python3 version not from PATH

[abcdenis]

Describe the bug
Plugin uses python3 path from PATH not from 'create poetry dialog' and could fail on multiple Python3 version installed.

To Reproduce
Steps to reproduce the behavior:

1. macos
2. have three versions of Python3 installed on machine: 3.6, 3.7, 3.8 with 3.7 as default:

$ which python3
/usr/local/bin/python3

$ /usr/local/bin/python3 -V
Python 3.7.9

$ which -a python3
/usr/local/bin/python3
/Library/Frameworks/Python.framework/Versions/3.7/bin/python3
/Library/Frameworks/Python.framework/Versions/3.6/bin/python3
/Library/Frameworks/Python.framework/Versions/3.8/bin/python3

3. install poetry on every Python3 version via 'path/../python3 -m pip install poetry==1.1.4'
4. open project with python version required as "^3.8" in Pycharm 2020.3.3 with Poetry plugin v1.0.3

Expected behavior
created poetry environment

Screenshots


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Environments (please complete the following information):
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Additional context
Full text from error window:

executed command

/Library/Frameworks/Python.framework/Versions/3.8/bin/poetry env use /usr/local/bin/python3


  NoCompatiblePythonVersionFound

  The specified Python version (3.7.9) is not supported by the project (^3.8).
  Please choose a compatible version or loosen the python constraint specified in the pyproject.toml file.

  at /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/poetry/utils/env.py:675 in create_venv
       671│             # If an executable has been specified, we stop there
       672│             # and notify the user of the incompatibility.
       673│             # Otherwise, we try to find a compatible Python version.
       674│             if executable:
    →  675│                 raise NoCompatiblePythonVersionFound(
       676│                     self._poetry.package.python_versions, python_patch
       677│                 )
       678│ 
       679│             io.write_line(

[koxudaxi]

@abcdenis
Thank you for creating this issue.

I can see you selected /usr/local/bin/python3  for a project with python version required as "^3.8"
But, you show me /usr/local/bin/python3 is Python 3.7.9.
I guess the error is correct.

$ /usr/local/bin/python3 -V
Python 3.7.9

However, PyCharm displays Python version 3.8 in the list. It's interesting.
The version may be wrong. 🤔

[abcdenis]

I used to see this bug in PyCharm. I will check and notify PyCharm developers if need. Thank you for suggestion.