Requesting missing interpreter with 'usedevelop = true' results in AttributeError #2826
Description
Issue
Given the following minimal tox.ini:
[testenv]
envlist = python3
[testenv]
usedevelop = trueRunning with a random pyXY factor on a host that doesn't have pythonX.Y results in an AttributeError:
py32: internal error
Traceback (most recent call last):
File "/tox/src/tox/session/cmd/run/single.py", line 45, in _evaluate
tox_env.setup()
File "/tox/src/tox/tox_env/api.py", line 248, in setup
self._setup_env()
File "/tox/src/tox/tox_env/python/runner.py", line 106, in _setup_env
super()._setup_env()
File "/tox/src/tox/tox_env/python/api.py", line 186, in _setup_env
self.ensure_python_env()
File "/tox/src/tox/tox_env/python/api.py", line 190, in ensure_python_env
conf = self.python_cache()
^^^^^^^^^^^^^^^^^^^
File "/tox/src/tox/tox_env/python/virtual_env/api.py", line 77, in python_cache
base = super().python_cache()
^^^^^^^^^^^^^^^^^^^^^^
File "/tox/src/tox/tox_env/python/api.py", line 228, in python_cache
"version_info": list(self.base_python.version_info),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'version_info'
py32: FAIL code 2 (0.00 seconds)
evaluation failed :( (0.06 seconds
This was alluded to in #2811 but that issue tracks a separate bug.
Environment
Provide at least:
- OS: Fedora 36
pip listof the host Python wheretoxis installed:
❯ pip list
Package Version
------------- -------
cachetools 5.2.0
chardet 5.1.0
colorama 0.4.6
distlib 0.3.6
filelock 3.9.0
packaging 22.0
pip 22.3.1
platformdirs 2.6.2
pluggy 1.0.0
pyproject_api 1.4.0
setuptools 65.6.3
tox 4.2.4
virtualenv 20.17.1
wheel 0.38.4Output of running tox
Provide the output of tox -rvv:
(not relevant)
Minimal example
If possible, provide a minimal reproducer for the issue:
(see above)