tox: Fix passenv error

[hiagofranco]

Fix whitespace error related to tox.

[hiagofranco]

Message error:

py39: failed with pass_env values cannot contain whitespace, use comma to have multiple values in a single line, invalid values found 'DISPLAY WAYLAND_DISPLAY'
  py39: FAIL code 1 (0.00 seconds)
  evaluation failed :( (0.04 seconds)

[m-col]

Thanks. Do you know why this hasn't caused issues in the past? Did something change in tox?

[hiagofranco]

This change was merged last week and the last release is quite new: tox-dev/tox#2671

[m-col]

Excellent, thanks. In that case, we should probably try to force updates or at least avoid confusing problems for devs using older tox versions. Maybe minversion in tox.ini: https://tox.wiki/en/latest/config.html#minversion

[hiagofranco]

Updated the minversion to 4.0.12.
Edit: Ok, apparently this will require more changes.

[m-col]

I suspect you'll need to update .github/workflows/ci.yml, though it looks like it already pins tox: pip -q install "tox<4" tox-gh-actions. See 6c8112c. Perhaps tox v4 now supports tox-gh-actions?

[hiagofranco]

Thanks for the information @m-col !
Checkig the tox-gh-actions repo, it appears that support to tox v4 is still in beta:

So I think it's not a good idea to migrate this now...

[m-col]

We could give it a go. If you update the pip install line to install the new tox version, the CI on the PR will run with the new version and we can see if it works :)

[github-actions]

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[ramnes]

Already fixed / merged in 5bb4d64