Can't use tkinter in virtual environment created by poetry

• OS version and name: Ubuntu 20.04
• Poetry version: 1.1.7
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/vitalije/77d16343bf8f0a99ec0946f2586edf5b

Issue

I have several python installations. Using one that I have compiled myself (*Python 3.9.6) with support of latest stable tk/tcl (8.6.11). This python when invoked directly has full support for tkinter library. However, when I create new virtual environment using:

poetry env use /path/to/my/python3.9.6
poetry shell
python -m tkinter

I get the error that python was not configured to use tkinter module.

When I manually add links lib/tcl8.6 and lib/tk8.6 to the virtual environment in ~/.cache/pypoetry/virtualenvs/mleo.../lib/, python can use tkinter afterwards.

I was expecting that poetry would add those links when creating new virtual environment.

[BD103]

I too have had this issue. After some testing, it seems fixed with the current version of Poetry. Try reinstalling it. Here are some fixes…

• I had Poetry 1.1.8 installed and had this error, 1.1.12 fixed it
• Check your virtualenv’s pyvenv.cfg and look for the virtualenv version.
  • Run poetry env info -p for the path to your virtualenv
  • The virtualenv version should look like virtualenv = 20.*.*
    • 20.7.2 was broken, while 20.10.0 was fixed
• Ensure that Tkinter worked with other Python versions
  • You may have to rebuild / reinstall your version
  • I ran Python 3.9.6 for both broken and fixed versions

I hope this helped you. I know it is a bit late, but hopefully someone else stumbles upon this and it fixes their issue. 😄

My working version of pyvenv.cfg…

[rben01]

Ok, I tracked this down to poetry seemingly ignoring poetry env use /path/to/python in some cases. That is, you can have the following (pseudo-bash):

$ readlink "$(poetry run which python)"
/path/a/python3.10

$ poetry env use /path/b/python3.10

$ readlink "$(poetry run which python)"
/path/a/python3.10

Perhaps you have to poetry env use /path/to/python before even creating the environment? If so, it’s incredibly misleading that poetry env use is a no-op once the environment has been created.