Many thanks @fungi for the info.
Reference for future travelers:
https://github.com/tox-dev/tox/issues/316
https://github.com/tox-dev/tox/pull/407
https://github.com/tox-dev/tox/blob/1e888ce9b87d87045479ed4c320be803b05b0f38/CHANGELOG#L40
FWIW, with the affected subset of charm projects, we're not going to try to make py27 pass. Instead, we'll redefine the project-config for them so that py27 isn't attempted.
Many thanks @fungi for the info.
Reference for future travelers:
https:/ /github. com/tox- dev/tox/ issues/ 316
https:/ /github. com/tox- dev/tox/ pull/407
https:/ /github. com/tox- dev/tox/ blob/1e888ce9b8 7d87045479ed4c3 20be803b05b0f38 /CHANGELOG# L40
FWIW, with the affected subset of charm projects, we're not going to try to make py27 pass. Instead, we'll redefine the project-config for them so that py27 isn't attempted.