The specified Python version (3.8) is not supported by the project (^3.7). #1735
Description
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I am on the latest Poetry version.
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I have searched the issues of this repo and believe that this is not a duplicate.
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If an exception occurs when executing a command, I executed it again in debug mode (
-vvvoption). -
OS version and name: Ubuntu 18.04.3 LTS
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Poetry version:
Poetry version 1.0.0 -
Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/jobevers/a3e674e4f316a6c0ea535ac818bf5f61
Issue
I wanted to start using python 3.8 in a project:
» poetry env use -vvv 3.8.0
[NoCompatiblePythonVersionFound]
The specified Python version (3.8) is not supported by the project (^3.7).
Please choose a compatible version or loosen the python constraint specified in the pyproject.toml file.
Traceback (most recent call last):
File "/home/jobevers/.local/pipx/venvs/poetry/lib/python3.6/site-packages/clikit/console_application.py", line 131, in run
status_code = command.handle(parsed_args, io)
File "/home/jobevers/.local/pipx/venvs/poetry/lib/python3.6/site-packages/clikit/api/command/command.py", line 120, in handle
status_code = self._do_handle(args, io)
File "/home/jobevers/.local/pipx/venvs/poetry/lib/python3.6/site-packages/clikit/api/command/command.py", line 171, in _do_handle
return getattr(handler, handler_method)(args, io, self)
File "/home/jobevers/.local/pipx/venvs/poetry/lib/python3.6/site-packages/cleo/commands/command.py", line 92, in wrap_handle
return self.handle()
File "/home/jobevers/.local/pipx/venvs/poetry/lib/python3.6/site-packages/poetry/console/commands/env/use.py", line 23, in handle
env = manager.activate(self.argument('python'), self._io)
File "/home/jobevers/.local/pipx/venvs/poetry/lib/python3.6/site-packages/poetry/utils/env.py", line 259, in activate
self.create_venv(io, executable=python, force=create)
File "/home/jobevers/.local/pipx/venvs/poetry/lib/python3.6/site-packages/poetry/utils/env.py", line 520, in create_venv
self._poetry.package.python_versions, python_minor