• Bitbucket: https://bitbucket.org/hpk42/tox/issue/149
• Originally reported by: @gavrie
• Originally created at: 2014-01-28T15:36:07.365

In my tox.ini, I have the following deps:

deps = -rpackaging/requirements.txt

Normally, when deps change, the virtualenv is recreated by tox. However, when the contents of requirements.txt change, tox does not notice this and the environment is reused.

A workaround would be to list the deps directly in tox.ini, but that would require duplicating the contents of the existing requirements.txt that is used by other tools.

We should automate the release process via a role account. When a maintainer tags a commit with a version, the CI should kick in and if all tests succeed automatically release the package.

fixes #271

first list the automatically running environments, all other environments are printed in alphabetical order (attached to the end)

If we want to differentiate between them I would recommend having some kind of separator, e.g:

py27-windows run py.test on Python 2.7 on Windows platform
py27-linux   run py.test on Python 2.7 on Linux platform
py36-windows run py.test on Python 3.6 on Windows platform
py36-linux   run py.test on Python 3.6 on Linux platform
------------------------- other env ----------------------
notincluded  something else

Looking at what is going on here, I think it is high time to get a new release out :)

It would be great if we could coordinate here what needs to be done, before we can cut the next release.

The one thing that is on my radar is the question of the logo and the docs. There were several people that think that the middle part of the logo looks a bit too much like the male gender sign. Maybe we can find a solution for that, before the next release?

What else needs to be done before we can make a first rc?

I'll read my way into what happened over the last months and update https://github.com/tox-dev/tox/projects/7

• Bitbucket: https://bitbucket.org/hpk42/tox/issue/189
• Originally reported by: @DasIch
• Originally created at: 2014-09-23T18:50:25.391

As discussed on IRC with @hpk42, I would like the ability to parametrize any testenv and not just the normal [testenv] one. One use case I have is a testenv for testing doctests on different Python interpreters, so basically I would like the following to work:

#!ini
[tox]
envlist = docs-examples-{py27,py33,py34}

[testenv:docs-examples]
changedir = docs
deps = sphinx
commands = sphinx-build -W -b doctest -d {envtmpdir}/doctrees . {envtmpdir}/doctest

/cc @suor

• Bitbucket: https://bitbucket.org/hpk42/tox/issue/297
• Originally reported by: @bittner
• Originally created at: 2015-12-16T17:01:01.612

(This issue comes from a comment in issue #185.) I'd love to see the tox configuration living in setup.cfg too in general, as an alternative.

It would allow a more elegant Python package configuration for developers: You could put configuration of all your tools into a single file. The ini-style allows for separate sections. I've described some considerations in a comment on issue 13.

A few projects already look into setup.cfg. flake8, behave, py.test, among others. Pylint is a prominent exception (its maintainer considers this idea harmful; declined PR; discussion).

tox was installed inside a virtual environement created from python 3.8.0, compile from source.

I am having the error on py36 and py37 only, so here is the tox -rvv from py36 inside my 3.8 virtual env

(potodo) ➜  potodo git:(json) tox -rvv -e py36
using tox.ini: /Users/seluj78/Projects/potodo/tox.ini (pid 80569)
  removing /Users/seluj78/Projects/potodo/.tox/log
using tox-3.14.2 from /Users/seluj78/Projects/potodo/venv/lib/python3.8/site-packages/tox/__init__.py (pid 80569)
GLOB start: packaging 
GLOB sdist-make: /Users/seluj78/Projects/potodo/setup.py
  removing /Users/seluj78/Projects/potodo/.tox/dist
[80576] /Users/seluj78/Projects/potodo$ /Users/seluj78/Projects/potodo/venv/bin/python3.8 setup.py sdist --formats=zip --dist-dir .tox/dist >.tox/log/GLOB-0.log
running sdist
running egg_info
writing potodo.egg-info/PKG-INFO
writing dependency_links to potodo.egg-info/dependency_links.txt
writing entry points to potodo.egg-info/entry_points.txt
writing requirements to potodo.egg-info/requires.txt
writing top-level names to potodo.egg-info/top_level.txt
reading manifest file 'potodo.egg-info/SOURCES.txt'
writing manifest file 'potodo.egg-info/SOURCES.txt'
running check
creating potodo-0.4.0
creating potodo-0.4.0/potodo
creating potodo-0.4.0/potodo.egg-info
copying files to potodo-0.4.0...
copying README.md -> potodo-0.4.0
copying setup.py -> potodo-0.4.0
copying potodo/__init__.py -> potodo-0.4.0/potodo
copying potodo/__main__.py -> potodo-0.4.0/potodo
copying potodo/_github.py -> potodo-0.4.0/potodo
copying potodo/_po_file.py -> potodo-0.4.0/potodo
copying potodo/potodo.py -> potodo-0.4.0/potodo
copying potodo.egg-info/PKG-INFO -> potodo-0.4.0/potodo.egg-info
copying potodo.egg-info/SOURCES.txt -> potodo-0.4.0/potodo.egg-info
copying potodo.egg-info/dependency_links.txt -> potodo-0.4.0/potodo.egg-info
copying potodo.egg-info/entry_points.txt -> potodo-0.4.0/potodo.egg-info
copying potodo.egg-info/not-zip-safe -> potodo-0.4.0/potodo.egg-info
copying potodo.egg-info/requires.txt -> potodo-0.4.0/potodo.egg-info
copying potodo.egg-info/top_level.txt -> potodo-0.4.0/potodo.egg-info
Writing potodo-0.4.0/setup.cfg
creating '.tox/dist/potodo-0.4.0.zip' and adding 'potodo-0.4.0' to it
adding 'potodo-0.4.0'
adding 'potodo-0.4.0/potodo.egg-info'
adding 'potodo-0.4.0/potodo'
adding 'potodo-0.4.0/PKG-INFO'
adding 'potodo-0.4.0/README.md'
adding 'potodo-0.4.0/setup.py'
adding 'potodo-0.4.0/setup.cfg'
adding 'potodo-0.4.0/potodo.egg-info/PKG-INFO'
adding 'potodo-0.4.0/potodo.egg-info/not-zip-safe'
adding 'potodo-0.4.0/potodo.egg-info/SOURCES.txt'
adding 'potodo-0.4.0/potodo.egg-info/entry_points.txt'
adding 'potodo-0.4.0/potodo.egg-info/requires.txt'
adding 'potodo-0.4.0/potodo.egg-info/top_level.txt'
adding 'potodo-0.4.0/potodo.egg-info/dependency_links.txt'
adding 'potodo-0.4.0/potodo/potodo.py'
adding 'potodo-0.4.0/potodo/_github.py'
adding 'potodo-0.4.0/potodo/__init__.py'
adding 'potodo-0.4.0/potodo/_po_file.py'
adding 'potodo-0.4.0/potodo/__main__.py'
removing 'potodo-0.4.0' (and everything under it)

GLOB finish: packaging  after 0.36 seconds
copying new sdistfile to '/Users/seluj78/.tox/distshare/potodo-0.4.0.zip'
package .tmp/package/1/potodo-0.4.0.zip links to dist/potodo-0.4.0.zip (/Users/seluj78/Projects/potodo/.tox)
py36 start: getenv /Users/seluj78/Projects/potodo/.tox/py36
py36 cannot reuse: -r flag
py36 recreate: /Users/seluj78/Projects/potodo/.tox/py36
python3.6 (/usr/local/bin/python3.6) is {'executable': '/usr/local/bin/python3.6', 'name': 'python', 'version_info': [3, 6, 8, 'final', 0], 'version': '3.6.8 (v3.6.8:3c6b436a57, Dec 24 2018, 02:04:31) \n[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)]', 'is_64': True, 'sysplatform': 'darwin'}
py36 uses /usr/local/bin/python3.6
  removing /Users/seluj78/Projects/potodo/.tox/py36
setting PATH=/Users/seluj78/Projects/potodo/.tox/py36/bin:/Users/seluj78/Projects/potodo/venv/bin:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/usr/local/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Library/Apple/bin:/opt/X11/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Wireshark.app/Contents/MacOS:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin
[80579] /Users/seluj78/Projects/potodo/.tox$ /Users/seluj78/Projects/potodo/venv/bin/python3.8 -m virtualenv --no-download --python /usr/local/bin/python3.6 py36
Running virtualenv with interpreter /usr/local/bin/python3.6
Already using interpreter /usr/local/bin/python3.6
Using base prefix '/Library/Frameworks/Python.framework/Versions/3.6'
New python executable in /Users/seluj78/Projects/potodo/.tox/py36/bin/python3.6
Also creating executable in /Users/seluj78/Projects/potodo/.tox/py36/bin/python
Installing setuptools, pip, wheel...
done.
py36 installdeps: pytest
setting PATH=/Users/seluj78/Projects/potodo/.tox/py36/bin:/Users/seluj78/Projects/potodo/venv/bin:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/usr/local/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Library/Apple/bin:/opt/X11/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Wireshark.app/Contents/MacOS:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin
[80586] /Users/seluj78/Projects/potodo$ /Users/seluj78/Projects/potodo/.tox/py36/bin/python -m pip install pytest
Looking in indexes: https://pypi.python.org/simple, https://pypi.apple.com/simple
Collecting pytest
  Using cached https://files.pythonhosted.org/packages/19/cf/711f1d887cb92c5155c9a1eb338f1b5d2411b50e4492a3b20e4a188a22b2/pytest-5.3.2-py3-none-any.whl
Collecting packaging
  Using cached https://files.pythonhosted.org/packages/cf/94/9672c2d4b126e74c4496c6b3c58a8b51d6419267be9e70660ba23374c875/packaging-19.2-py2.py3-none-any.whl
Collecting more-itertools>=4.0.0
  Using cached https://files.pythonhosted.org/packages/68/03/0604cec1ea13c9f063dd50f900d1a36160334dd3cfb01fd0e638f61b46ba/more_itertools-8.0.2-py3-none-any.whl
Collecting attrs>=17.4.0
  Using cached https://files.pythonhosted.org/packages/a2/db/4313ab3be961f7a763066401fb77f7748373b6094076ae2bda2806988af6/attrs-19.3.0-py2.py3-none-any.whl
Collecting pluggy<1.0,>=0.12
  Using cached https://files.pythonhosted.org/packages/a0/28/85c7aa31b80d150b772fbe4a229487bc6644da9ccb7e427dd8cc60cb8a62/pluggy-0.13.1-py2.py3-none-any.whl
Collecting py>=1.5.0
  Using cached https://files.pythonhosted.org/packages/76/bc/394ad449851729244a97857ee14d7cba61ddb268dce3db538ba2f2ba1f0f/py-1.8.0-py2.py3-none-any.whl
Collecting wcwidth
  Using cached https://files.pythonhosted.org/packages/7e/9f/526a6947247599b084ee5232e4f9190a38f398d7300d866af3ab571a5bfe/wcwidth-0.1.7-py2.py3-none-any.whl
Collecting importlib-metadata>=0.12; python_version < "3.8"
  Using cached https://files.pythonhosted.org/packages/e9/71/1a1e0ed0981bb6a67bce55a210f168126b7ebd2065958673797ea66489ca/importlib_metadata-1.3.0-py2.py3-none-any.whl
Collecting six
  Using cached https://files.pythonhosted.org/packages/65/26/32b8464df2a97e6dd1b656ed26b2c194606c16fe163c695a992b36c11cdf/six-1.13.0-py2.py3-none-any.whl
Collecting pyparsing>=2.0.2
  Using cached https://files.pythonhosted.org/packages/c0/0c/fc2e007d9a992d997f04a80125b0f183da7fb554f1de701bbb70a8e7d479/pyparsing-2.4.5-py2.py3-none-any.whl
Collecting zipp>=0.5
  Using cached https://files.pythonhosted.org/packages/74/3d/1ee25a26411ba0401b43c6376d2316a71addcc72ef8690b101b4ea56d76a/zipp-0.6.0-py2.py3-none-any.whl
Installing collected packages: six, pyparsing, packaging, more-itertools, attrs, zipp, importlib-metadata, pluggy, py, wcwidth, pytest
Successfully installed attrs-19.3.0 importlib-metadata-1.3.0 more-itertools-8.0.2 packaging-19.2 pluggy-0.13.1 py-1.8.0 pyparsing-2.4.5 pytest-5.3.2 six-1.13.0 wcwidth-0.1.7 zipp-0.6.0
py36 finish: getenv /Users/seluj78/Projects/potodo/.tox/py36 after 6.32 seconds
py36 start: installpkg /Users/seluj78/Projects/potodo/.tox/.tmp/package/1/potodo-0.4.0.zip
py36 inst: /Users/seluj78/Projects/potodo/.tox/.tmp/package/1/potodo-0.4.0.zip
write config to /Users/seluj78/Projects/potodo/.tox/py36/.tox-config1 as '26aeefd96897788c77f488126e45e6a6063c079af252e857b7045abd67bd3f75 /usr/local/bin/python3.6\n3.14.2 0 0 0\n00000000000000000000000000000000 pytest'
setting PATH=/Users/seluj78/Projects/potodo/.tox/py36/bin:/Users/seluj78/Projects/potodo/venv/bin:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/usr/local/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Library/Apple/bin:/opt/X11/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Wireshark.app/Contents/MacOS:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin
[80590] /Users/seluj78/Projects/potodo$ /Users/seluj78/Projects/potodo/.tox/py36/bin/python -m pip install --exists-action w .tox/.tmp/package/1/potodo-0.4.0.zip
Looking in indexes: https://pypi.python.org/simple, https://pypi.apple.com/simple
Processing ./.tox/.tmp/package/1/potodo-0.4.0.zip
Collecting polib
  Using cached https://files.pythonhosted.org/packages/30/a2/e407c3b00cace3d7fc8df14d364deeecfeb96044e1a317de583bc26eae58/polib-1.1.0-py2.py3-none-any.whl
Collecting requests
  Using cached https://files.pythonhosted.org/packages/51/bd/23c926cd341ea6b7dd0b2a00aba99ae0f828be89d72b2190f27c11d4b7fb/requests-2.22.0-py2.py3-none-any.whl
Collecting urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1
  Using cached https://files.pythonhosted.org/packages/b4/40/a9837291310ee1ccc242ceb6ebfd9eb21539649f193a7c8c86ba15b98539/urllib3-1.25.7-py2.py3-none-any.whl
Collecting idna<2.9,>=2.5
  Using cached https://files.pythonhosted.org/packages/14/2c/cd551d81dbe15200be1cf41cd03869a46fe7226e7450af7a6545bfc474c9/idna-2.8-py2.py3-none-any.whl
Collecting chardet<3.1.0,>=3.0.2
  Using cached https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl
Collecting certifi>=2017.4.17
  Using cached https://files.pythonhosted.org/packages/b9/63/df50cac98ea0d5b006c55a399c3bf1db9da7b5a24de7890bc9cfd5dd9e99/certifi-2019.11.28-py2.py3-none-any.whl
Building wheels for collected packages: potodo
  Building wheel for potodo (setup.py) ... done
  Created wheel for potodo: filename=potodo-0.4.0-cp36-none-any.whl size=7609 sha256=0a1aac14e1a4bd4c40c13728a1f030e307b22728438fec7e4c756f6424f19b88
  Stored in directory: /Users/seluj78/Library/Caches/pip/wheels/c0/cd/ee/1dad18569e006002404c6c1a3939b65ec979a7c4b99c80e46c
Successfully built potodo
Installing collected packages: polib, urllib3, idna, chardet, certifi, requests, potodo
  Found existing installation: potodo 0.4.0
    Not uninstalling potodo at /Users/seluj78/Projects/potodo, outside environment /Users/seluj78/Projects/potodo/.tox/py36/bin/..
    Can't uninstall 'potodo'. No files were found to uninstall.
Successfully installed certifi-2019.11.28 chardet-3.0.4 idna-2.8 polib-1.1.0 potodo-0.4.0 requests-2.22.0 urllib3-1.25.7
py36 finish: installpkg /Users/seluj78/Projects/potodo/.tox/.tmp/package/1/potodo-0.4.0.zip after 2.63 seconds
py36 start: envreport 
setting PATH=/Users/seluj78/Projects/potodo/.tox/py36/bin:/Users/seluj78/Projects/potodo/venv/bin:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/usr/local/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Library/Apple/bin:/opt/X11/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Wireshark.app/Contents/MacOS:/usr/local/opt/[email protected]/bin:/Users/seluj78/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin:/usr/local/opt/gettext/bin:/Users/seluj78/.local/bin
[80599] /Users/seluj78/Projects/potodo$ /Users/seluj78/Projects/potodo/.tox/py36/bin/python -m pip freeze >.tox/py36/log/py36-0.log
ERROR: invocation failed (exit code 1), logfile: /Users/seluj78/Projects/potodo/.tox/py36/log/py36-0.log
============================================================================================================== log start ==============================================================================================================
/Users/seluj78/Projects/potodo/venv/bin/python3.8: No module named pip

=============================================================================================================== log end ===============================================================================================================
_______________________________________________________________________________________________________________ summary _______________________________________________________________________________________________________________
ERROR:   py36: InvocationError for command /Users/seluj78/Projects/potodo/.tox/py36/bin/python -m pip freeze (exited with code 1)
cleanup /Users/seluj78/Projects/potodo/.tox/.tmp/package/1/potodo-0.4.0.zip

I could not find any logical explanation. All my python installations have pip installed, as well as tox's...

Currently, tox runs virtualenv via python -m virtualenv .... However, that assumes that virtualenv is installed with the python invoked, that is not always the case (for example: pythons installed via pyenv don't come with virutalenv). A trivial solution for this is to employ the same technique as virtualenv itself uses: invoke virtualenv via python path/to/virtualenv.py ...

This change allows to package tox via tools like pex, and have a working standalone tox that does not assume all pythons come with virtualenv.

Issue: https://github.com/tox-dev/tox/issues/928

• Bitbucket: https://bitbucket.org/hpk42/tox/issue/150
• Originally reported by: ehopemorley
• Originally created at: 2014-01-31T15:42:29.801

With tox version 1.7.0 I get the following error:

tox.ConfigError: ConfigError: substitution key 'posargs' not found

Which appears to be caused by the following line in my tox.ini:

commands = python setup.py test --slowest --testr-args='{posargs}'

This worked fine with the previous version of tox i.e. 1.6.1

@hpk42 got the ball rolling last year and it is time that we bring this to a conclusion, so that we can get rid if that silly generic logo for our org :)

I link to the relevant discussions on the mailing list and invite everyone interested in this to join into the discussion on the mailing list.

Jad Sarout created some drafts and allowed us to build on them if we like, he has no time anymore to follow up on it himself. The discussion is here.

Here are his drafts:

Thank you Jad!

Discussion round 2 is here. The drafts are by Gero (sorry do not have his full name yet) and are in this PDF: tox-2017-06-01.pdf (note: the writing would need to be adapted to spelling tox all lowercase).

I also have an idea for a logo that is based on transpiling the flute from the pytest logo - for reference: And here is my horrible sketch. If someone who is into graphics (Gero?) would want to create something concrete from that I'd be thrilled :)

I also really liked the idea from Laura Creighton about that Jack in a box, but there is no draft for this:

The first idea I had was for the 'box' to be a jack-in-the-box. And give the 'Jack' bouncing out of it a goat's head. Colour the box and dress the Jack the same cheerful colours that pytest uses.

[relevant context]: tox is short for "testing out of the box" :)

see commit messages for details. This might grow a bit more over the next days, as I have some time at my hands and want to tidy up the code base a bit.

closes #797 closes #798 closes #799 closes #800 closes #801 closes #754

Also (no extra issues for that):

• removed all experimental markers from docstrings (most of them have been there for a few years already). If they turn out wrong/bad, we just have to deprecate them and remove them in a major release
• hookimpl is instantiated twice - mark one of them as deprecated and get rid of it later
• moved hookimpl to __init__.py - having a hookimpl object in the hookspecs module is unnecessary and confusing. Access to hookimpl should happen as module attribute of tox (clearer where it comes from) - also kept a deprecated reference there for compatibilty.
• removed some redundant rst references in hookspecs. If they are initialized once in any namespace they are defined globally (I don't like it either but that is how it works in restructuredText and ignoring that and defining the same things several times is confusing)
• move _dummy object to only class where it is needed and name it like the constant that it is
• use six for py2/3 compatibility where noticed it and where it is cheap to do
• remove dead code
• move exception related code into its own module rather than having it hang around in a class looking like a module in __init__.py
• there is no need to have an intermediate run_main - that is used everywhere only under the name tox.cmdline rename function and use it directly, just like client code is using it
• add a fixture for working in a clean tmpdir

Issue

The information at https://tox.wiki/en/latest/user_guide.html#main-features about environment versions seems to no longer hold. It currently states

cross-Python compatible: tox requires CPython 3.7 and higher, but it can create environments 2.7 or later

...but per the commentary in #2836 I read that at least 3.5 (which "2.7 or later" includes) is no longer supported.

Issue

In particular conditions, tox might get stuck forever (100% cpu) after it finished running.

Describe what's the expected behaviour and what you're observing.

Environment

Provide at least:

• OS: any
• pip list of the host Python where tox is installed:

Output of running tox

Provide the output of tox -rvv:

[email protected]: ~/c/tox-bug main
$ tox -vvv --exit-and-dump-after 40 -e py
ROOT: 140 D setup logging to NOTSET on pid 46700 [tox/report.py:221]
ROOT: 297 W will run in automatically provisioned tox, host /Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11 is missing [requires (has)]: tox>=4.2.6 (4.2.5) [tox/provision.py:124]
.pkg: 309 I find interpreter for spec PythonSpec(path=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11) [virtualenv/discovery/builtin.py:56]
.pkg: 309 I proposed PythonInfo(spec=CPython3.11.0.final.0-64, exe=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 309 D accepted PythonInfo(spec=CPython3.11.0.final.0-64, exe=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 311 D filesystem is not case-sensitive [virtualenv/info.py:24]
.pkg: 373 I find interpreter for spec PythonSpec(path=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11) [virtualenv/discovery/builtin.py:56]
.pkg: 373 I proposed PythonInfo(spec=CPython3.11.0.final.0-64, exe=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 373 D accepted PythonInfo(spec=CPython3.11.0.final.0-64, exe=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 375 I find interpreter for spec PythonSpec() [virtualenv/discovery/builtin.py:56]
.pkg: 375 I proposed PythonInfo(spec=CPython3.11.0.final.0-64, exe=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 375 D accepted PythonInfo(spec=CPython3.11.0.final.0-64, exe=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
ROOT: 376 I will run in a automatically provisioned python environment under /Users/ssbarnea/c/tox-bug/.tox/.tox/bin/python [tox/provision.py:145]
.pkg: 379 W _optional_hooks> python /Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta [tox/tox_env/api.py:427]
Backend: run command _optional_hooks with args {}
Backend: Wrote response {'return': {'get_requires_for_build_sdist': True, 'prepare_metadata_for_build_wheel': True, 'get_requires_for_build_wheel': True, 'build_editable': True, 'get_requires_for_build_editable': True, 'prepare_metadata_for_build_editable': True}} to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/pep517__optional_hooks-dh8_2_0b.json
.pkg: 570 I exit None (0.19 seconds) /Users/ssbarnea/c/tox-bug> python /Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta pid=46718 [tox/execute/api.py:275]
.pkg: 571 W get_requires_for_build_editable> python /Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta [tox/tox_env/api.py:427]
Backend: run command get_requires_for_build_editable with args {'config_settings': None}
/Users/ssbarnea/c/tox-bug/.tox/.pkg/lib/python3.11/site-packages/setuptools/config/expand.py:144: UserWarning: File '/Users/ssbarnea/c/tox-bug/README.md' cannot be found
  warnings.warn(f"File {path!r} cannot be found")
running egg_info
writing src/ansible_compat.egg-info/PKG-INFO
writing dependency_links to src/ansible_compat.egg-info/dependency_links.txt
writing top-level names to src/ansible_compat.egg-info/top_level.txt
writing manifest file 'src/ansible_compat.egg-info/SOURCES.txt'
Backend: Wrote response {'return': ['wheel']} to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/pep517_get_requires_for_build_editable-xbuoiu_g.json
.pkg: 772 I exit None (0.20 seconds) /Users/ssbarnea/c/tox-bug> python /Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta pid=46718 [tox/execute/api.py:275]
.pkg: 773 W build_editable> python /Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta [tox/tox_env/api.py:427]
Backend: run command build_editable with args {'wheel_directory': '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist', 'config_settings': {'--build-option': []}, 'metadata_directory': '/Users/ssbarnea/c/tox-bug/.tox/.pkg/.meta'}
/Users/ssbarnea/c/tox-bug/.tox/.pkg/lib/python3.11/site-packages/setuptools/config/expand.py:144: UserWarning: File '/Users/ssbarnea/c/tox-bug/README.md' cannot be found
  warnings.warn(f"File {path!r} cannot be found")
running editable_wheel
creating /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat.egg-info
writing /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat.egg-info/PKG-INFO
writing dependency_links to /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat.egg-info/dependency_links.txt
writing top-level names to /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat.egg-info/top_level.txt
writing manifest file '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat.egg-info/SOURCES.txt'
writing manifest file '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat.egg-info/SOURCES.txt'
creating '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat-0.1.dev1.dist-info'
creating /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat-0.1.dev1.dist-info/WHEEL
running build_py
running egg_info
creating /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmplg3vacmn.build-temp/ansible_compat.egg-info
writing /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmplg3vacmn.build-temp/ansible_compat.egg-info/PKG-INFO
writing dependency_links to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmplg3vacmn.build-temp/ansible_compat.egg-info/dependency_links.txt
writing top-level names to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmplg3vacmn.build-temp/ansible_compat.egg-info/top_level.txt
writing manifest file '/var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmplg3vacmn.build-temp/ansible_compat.egg-info/SOURCES.txt'
writing manifest file '/var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmplg3vacmn.build-temp/ansible_compat.egg-info/SOURCES.txt'

        Editable install will be performed using .pth file to extend `sys.path` with:
        ['src']

Options like `package-data`, `include/exclude-package-data` or
`packages.find.exclude/include` may have no effect.

adding '__editable__.ansible_compat-0.1.dev1.pth'
creating '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-wfme8ksy/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl' and adding '/var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmp_6d_ux_iansible_compat-0.1.dev1-0.editable-py3-none-any.whl' to it
adding 'ansible_compat-0.1.dev1.dist-info/METADATA'
adding 'ansible_compat-0.1.dev1.dist-info/WHEEL'
adding 'ansible_compat-0.1.dev1.dist-info/top_level.txt'
adding 'ansible_compat-0.1.dev1.dist-info/RECORD'
Backend: Wrote response {'return': 'ansible_compat-0.1.dev1-0.editable-py3-none-any.whl'} to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/pep517_build_editable-owjdt97d.json
.pkg: 907 I exit None (0.13 seconds) /Users/ssbarnea/c/tox-bug> python /Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta pid=46718 [tox/execute/api.py:275]
.pkg: 908 D package .tmp/package/21/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl links to .pkg/dist/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl (/Users/ssbarnea/c/tox-bug/.tox) [tox/util/file_view.py:36]
ROOT: 908 W install_package> python -I -m pip install --force-reinstall --no-deps /Users/ssbarnea/c/tox-bug/.tox/.tmp/package/21/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl [tox/tox_env/api.py:427]
Processing ./.tox/.tmp/package/21/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl
Installing collected packages: ansible-compat
  Attempting uninstall: ansible-compat
    Found existing installation: ansible-compat 0.1.dev1
    Uninstalling ansible-compat-0.1.dev1:
      Successfully uninstalled ansible-compat-0.1.dev1
Successfully installed ansible-compat-0.1.dev1
ROOT: 1400 I exit 0 (0.49 seconds) /Users/ssbarnea/c/tox-bug> python -I -m pip install --force-reinstall --no-deps /Users/ssbarnea/c/tox-bug/.tox/.tmp/package/21/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl pid=46748 [tox/execute/api.py:275]
ROOT: 1400 W provision> .tox/.tox/bin/python -m tox -vvv --exit-and-dump-after 40 -e py [tox/tox_env/api.py:427]
ROOT: 77 D setup logging to NOTSET on pid 46755 [tox/report.py:221]
.pkg: 112 I find interpreter for spec PythonSpec() [virtualenv/discovery/builtin.py:56]
.pkg: 114 D got python info of /Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11 from /Users/ssbarnea/Library/Application Support/virtualenv/py_info/1/7c440f9733fdf26ad06b36085586625aa56ad3867d4add5eecd4dc174170d65a.json [virtualenv/app_data/via_disk_folder.py:129]
.pkg: 114 I proposed PythonInfo(spec=CPython3.11.0.final.0-64, system=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, exe=/Users/ssbarnea/c/tox-bug/.tox/.tox/bin/python, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 114 D accepted PythonInfo(spec=CPython3.11.0.final.0-64, system=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, exe=/Users/ssbarnea/c/tox-bug/.tox/.tox/bin/python, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 115 D filesystem is not case-sensitive [virtualenv/info.py:24]
.pkg: 132 I find interpreter for spec PythonSpec(path=/Users/ssbarnea/c/tox-bug/.tox/.tox/bin/python) [virtualenv/discovery/builtin.py:56]
.pkg: 132 I proposed PythonInfo(spec=CPython3.11.0.final.0-64, system=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, exe=/Users/ssbarnea/c/tox-bug/.tox/.tox/bin/python, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 132 D accepted PythonInfo(spec=CPython3.11.0.final.0-64, system=/Users/ssbarnea/.pyenv/versions/3.11-dev/bin/python3.11, exe=/Users/ssbarnea/c/tox-bug/.tox/.tox/bin/python, platform=darwin, version='3.11.0+ (heads/3.11:4cd5ea62ac, Oct 25 2022, 18:19:49) [Clang 14.0.0 (clang-1400.0.29.102)]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 134 W _optional_hooks> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta [tox/tox_env/api.py:427]
Backend: run command _optional_hooks with args {}
Backend: Wrote response {'return': {'get_requires_for_build_sdist': True, 'prepare_metadata_for_build_wheel': True, 'get_requires_for_build_wheel': True, 'build_editable': True, 'get_requires_for_build_editable': True, 'prepare_metadata_for_build_editable': True}} to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/pep517__optional_hooks-6hnvgpmw.json
.pkg: 237 I exit None (0.10 seconds) /Users/ssbarnea/c/tox-bug> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta pid=46757 [tox/execute/api.py:275]
.pkg: 237 W get_requires_for_build_editable> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta [tox/tox_env/api.py:427]
Backend: run command get_requires_for_build_editable with args {'config_settings': None}
/Users/ssbarnea/c/tox-bug/.tox/.pkg/lib/python3.11/site-packages/setuptools/config/expand.py:144: UserWarning: File '/Users/ssbarnea/c/tox-bug/README.md' cannot be found
  warnings.warn(f"File {path!r} cannot be found")
running egg_info
writing src/ansible_compat.egg-info/PKG-INFO
writing dependency_links to src/ansible_compat.egg-info/dependency_links.txt
writing top-level names to src/ansible_compat.egg-info/top_level.txt
writing manifest file 'src/ansible_compat.egg-info/SOURCES.txt'
Backend: Wrote response {'return': ['wheel']} to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/pep517_get_requires_for_build_editable-4uddn4ko.json
.pkg: 392 I exit None (0.15 seconds) /Users/ssbarnea/c/tox-bug> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta pid=46757 [tox/execute/api.py:275]
.pkg: 392 W build_editable> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta [tox/tox_env/api.py:427]
Backend: run command build_editable with args {'wheel_directory': '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist', 'config_settings': {'--build-option': []}, 'metadata_directory': '/Users/ssbarnea/c/tox-bug/.tox/.pkg/.meta'}
/Users/ssbarnea/c/tox-bug/.tox/.pkg/lib/python3.11/site-packages/setuptools/config/expand.py:144: UserWarning: File '/Users/ssbarnea/c/tox-bug/README.md' cannot be found
  warnings.warn(f"File {path!r} cannot be found")
running editable_wheel
creating /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat.egg-info
writing /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat.egg-info/PKG-INFO
writing dependency_links to /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat.egg-info/dependency_links.txt
writing top-level names to /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat.egg-info/top_level.txt
writing manifest file '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat.egg-info/SOURCES.txt'
writing manifest file '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat.egg-info/SOURCES.txt'
creating '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat-0.1.dev1.dist-info'
creating /Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat-0.1.dev1.dist-info/WHEEL
running build_py
running egg_info
creating /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmpat9h5lcf.build-temp/ansible_compat.egg-info
writing /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmpat9h5lcf.build-temp/ansible_compat.egg-info/PKG-INFO
writing dependency_links to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmpat9h5lcf.build-temp/ansible_compat.egg-info/dependency_links.txt
writing top-level names to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmpat9h5lcf.build-temp/ansible_compat.egg-info/top_level.txt
writing manifest file '/var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmpat9h5lcf.build-temp/ansible_compat.egg-info/SOURCES.txt'
writing manifest file '/var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmpat9h5lcf.build-temp/ansible_compat.egg-info/SOURCES.txt'

        Editable install will be performed using .pth file to extend `sys.path` with:
        ['src']

Options like `package-data`, `include/exclude-package-data` or
`packages.find.exclude/include` may have no effect.

adding '__editable__.ansible_compat-0.1.dev1.pth'
creating '/Users/ssbarnea/c/tox-bug/.tox/.pkg/dist/.tmp-ema2szox/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl' and adding '/var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/tmp41rddnayansible_compat-0.1.dev1-0.editable-py3-none-any.whl' to it
adding 'ansible_compat-0.1.dev1.dist-info/METADATA'
adding 'ansible_compat-0.1.dev1.dist-info/WHEEL'
adding 'ansible_compat-0.1.dev1.dist-info/top_level.txt'
adding 'ansible_compat-0.1.dev1.dist-info/RECORD'
Backend: Wrote response {'return': 'ansible_compat-0.1.dev1-0.editable-py3-none-any.whl'} to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/pep517_build_editable-tho58wbq.json
.pkg: 520 I exit None (0.13 seconds) /Users/ssbarnea/c/tox-bug> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta pid=46757 [tox/execute/api.py:275]
.pkg: 520 D package .tmp/package/22/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl links to .pkg/dist/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl (/Users/ssbarnea/c/tox-bug/.tox) [tox/util/file_view.py:36]
py: 521 W install_package> python -I -m pip install --force-reinstall --no-deps /Users/ssbarnea/c/tox-bug/.tox/.tmp/package/22/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl [tox/tox_env/api.py:427]
Processing ./.tox/.tmp/package/22/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl
Installing collected packages: ansible-compat
  Attempting uninstall: ansible-compat
    Found existing installation: ansible-compat 0.1.dev1
    Uninstalling ansible-compat-0.1.dev1:
      Successfully uninstalled ansible-compat-0.1.dev1
Successfully installed ansible-compat-0.1.dev1
py: 784 I exit 0 (0.26 seconds) /Users/ssbarnea/c/tox-bug> python -I -m pip install --force-reinstall --no-deps /Users/ssbarnea/c/tox-bug/.tox/.tmp/package/22/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl pid=46788 [tox/execute/api.py:275]
py: 784 W commands[0]> echo 123 [tox/tox_env/api.py:427]
123
py: 808 I exit 0 (0.02 seconds) /Users/ssbarnea/c/tox-bug> echo 123 pid=46790 [tox/execute/api.py:275]
.pkg: 809 W _exit> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta [tox/tox_env/api.py:427]
Backend: run command _exit with args {}
Backend: Wrote response {'return': 0} to /var/folders/32/1xrphgzd4xv777syxjtkpdw80000gn/T/pep517__exit-wsk25xml.json
.pkg: 810 I exit None (0.00 seconds) /Users/ssbarnea/c/tox-bug> python /Users/ssbarnea/c/tox-bug/.tox/.tox/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta pid=46757 [tox/execute/api.py:275]
.pkg: 841 D delete package /Users/ssbarnea/c/tox-bug/.tox/.tmp/package/22/ansible_compat-0.1.dev1-0.editable-py3-none-any.whl [tox/tox_env/python/virtual_env/package/pyproject.py:171]
  py: OK (0.71=setup[0.68]+cmd[0.02] seconds)
  congratulations :) (0.76 seconds)
Timeout (0:00:40)!
Thread 0x000000017d037000 (most recent call first):
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/tox/execute/local_sub_process/read_via_thread_unix.py", line 35 in _read_available
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/tox/execute/local_sub_process/read_via_thread_unix.py", line 24 in _read_stream
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/threading.py", line 975 in run
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/threading.py", line 1038 in _bootstrap_inner
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/threading.py", line 995 in _bootstrap

Thread 0x000000017c02b000 (most recent call first):
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/tox/execute/local_sub_process/read_via_thread_unix.py", line 35 in _read_available
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/site-packages/tox/execute/local_sub_process/read_via_thread_unix.py", line 24 in _read_stream
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/threading.py", line 975 in run
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/threading.py", line 1038 in _bootstrap_inner
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/threading.py", line 995 in _bootstrap

Thread 0x00000001e3983a80 (most recent call first):
  File "/Users/ssbarnea/.pyenv/versions/3.11-dev/lib/python3.11/threading.py", line 1583 in _shutdown
FAIL: 1

Minimal example

At https://github.com/ssbarnea/tox-bug there is a full repository created for reproducing the bug.

I will explain the conditions I already identified as required in order to reproduce the bug:

• tox needs to be convinced to reprovision itself (it does not happen otherwise)
• usedevelop = true must be present

I also mention that the --exit-and-dump-after trick does force tox to exit but does not close the running thread, which will be stuck until user kills the process. Bug reproduced on both macos/linux.

When wheel is not installed, several tests error like this:

distutils.errors.DistutilsModuleError: invalid command 'bdist_wheel'
...
SystemExit: error: invalid command 'bdist_wheel'

Or like this:

ERROR Missing dependencies:
	wheel

When the tests are executed in a virtualenv, wheel is implicitly installed, which is why this have never happened on the CI.

List of tests that error:

 ERROR tests/tox_env/python/virtual_env/package/test_package_cmd_builder.py::test_tox_install_pkg_wheel
 ERROR tests/tox_env/python/virtual_env/package/test_package_cmd_builder.py::test_tox_install_pkg_sdist
 ERROR tests/tox_env/python/virtual_env/package/test_package_cmd_builder.py::test_install_pkg_via[p]
 ERROR tests/tox_env/python/virtual_env/package/test_package_cmd_builder.py::test_install_pkg_via[le]
 ERROR tests/tox_env/python/virtual_env/package/test_python_package_util.py::test_load_dependency_no_extra
 ERROR tests/tox_env/python/virtual_env/package/test_python_package_util.py::test_load_dependency_many_extra

Thanks for contribution

Please, make sure you address all the checklists (for details on how see development documentation)!

• [x] ran the linter to address style issues (tox -e fix)
• [x] wrote descriptive pull request text
• [-] ensured there are test(s) validating the fix
• [x] added news fragment in docs/changelog folder
• [-] updated/extended the documentation

When I run test_local_execute_basic_pass_show_on_standard_newline_flush or test_local_execute_write_a_lot in our Fedora Linux build system they fail because the output from the tox contains \r\n instead of just \n.

The complete output is:

# python3 -m pytest -vsx -k "test_local_execute_basic_pass_show_on_standard_newline_flush"
==================================== test session starts =====================================
platform linux -- Python 3.11.1, pytest-7.2.0, pluggy-1.0.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /builddir/build/BUILD/tox-4.2.6, configfile: pyproject.toml, testpaths: tests
plugins: xdist-3.1.0, cov-4.0.0, mock-3.10.0, flaky-3.7.0
collected 1405 items / 1404 deselected / 1 selected                                          

tests/execute/local_subprocess/test_local_subprocess.py::test_local_execute_basic_pass_show_on_standard_newline_flush FAILED

========================================== FAILURES ==========================================
________________ test_local_execute_basic_pass_show_on_standard_newline_flush ________________

caplog = <_pytest.logging.LogCaptureFixture object at 0x7f75e0b766d0>

    def test_local_execute_basic_pass_show_on_standard_newline_flush(caplog: LogCaptureFixture) -> None:
        caplog.set_level(logging.NOTSET)
        executor = LocalSubProcessExecutor(colored=False)
        request = ExecuteRequest(
            cmd=[sys.executable, "-c", "import sys; print('out'); print('yay')"],
            cwd=Path(),
            env=os.environ.copy(),
            stdin=StdinSource.OFF,
            run_id="",
        )
        out_err = FakeOutErr()
        with executor.call(request, show=True, out_err=out_err.out_err, env=MagicMock()) as status:
            while status.exit_code is None:  # pragma: no branch
                status.wait()
        outcome = status.outcome
        assert outcome is not None
        assert repr(outcome)
        assert bool(outcome) is True, outcome
        assert outcome.exit_code == Outcome.OK
        assert not outcome.err
>       assert outcome.out == f"out{os.linesep}yay{os.linesep}"
E       AssertionError: assert 'out\r\nyay\r\n' == 'out\nyay\n'
E         - out
E         + out
E         ?    +
E         - yay
E         + yay
E         ?    +

caplog     = <_pytest.logging.LogCaptureFixture object at 0x7f75e0b766d0>
executor   = <tox.execute.local_sub_process.LocalSubProcessExecutor object at 0x7f75e1614790>
out_err    = <tests.execute.local_subprocess.test_local_subprocess.FakeOutErr object at 0x7f75e0f7d290>
outcome    = Outcome: exit 0 in 0.01 seconds for /usr/bin/python3 -c 'import sys; print('"'"'out'"'"'); print('"'"'yay'"'"')'
request    = ExecuteRequest(cmd=['/usr/bin/python3', '-c', "import sys; print('out'); print('yay')"], cwd=PosixPath('.'), env=..., stdin=<StdinSource.OFF: 0>)
status     = LocalSubprocessExecuteStatus(pid=188, returncode=0)

tests/execute/local_subprocess/test_local_subprocess.py:98: AssertionError
================================== short test summary info ===================================
FAILED tests/execute/local_subprocess/test_local_subprocess.py::test_local_execute_basic_pass_show_on_standard_newline_flush - AssertionError: assert 'out\r\nyay\r\n' == 'out\nyay\n'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
============================= 1 failed, 1404 deselected in 0.55s =============================

I have no idea why this is happening. As you can see, the running process has \n as os.linesep and I don't know why tox running in the test would have anything else.

Consider the following tox.ini file:

[tox]
ignore_base_python_conflict = true

[testenv]
base_python = python3
commands = ...

[testenv:functional{,-py38,-py39,-py310}]
commands = ...

There is a conflict between the base_python value specified in [testenv] base_python and the value implied by the pyXY factors in the functional-pyXY test envs. The Python._validate_base_python function is supposed to resolve this for us and either (a) raise an error if [tox] ignore_base_python_conflict is set to false (default) or (b) ignore the value of [testenv] base_python in favour of the value implied by the pyXY factor for the given test env if [tox] ignore_base_python_conflict is set to true. There's a bug though. Rather than returning the pyXY factor, we were returning the entire test env name (functional-pyXY). There is no Python version corresponding to e.g. functional-py39 so this (correctly) fails.

We can correct the issue by only returning the factor that modified the base_python value, i.e. the pyXY factor. To ensure we do this, we need some additional logic. It turns out this logic is already present in another helper method on the Python class, extract_base_python, so we also take the opportunity to de-duplicate and reuse some logic.

Note that this change breaks the ability of users to use a testenv name like py38-64 (to get the 64 bit version of a Python 3.8 interpreter). Continuing to support this would require much larger change since we'd no longer be able to strictly delimit factors by hyphens (in this case, the entirety of py38-64 becomes a factor).

Also note that this change emphasises issue #2657, as this will now be raised for a factor like py38-64 since tox (or rather, virtualenv) is falsely identifying 64 as a valid Python interpreter identifier. We will fix this separately so the offending test are skipped for now.

Signed-off-by: Stephen Finucane [email protected] Fixes: #2838

Thanks for contribution

Please, make sure you address all the checklists (for details on how see development documentation)!

• [x] ran the linter to address style issues (tox -e fix)
• [x] wrote descriptive pull request text
• [x] ensured there are test(s) validating the fix
• [ ] added news fragment in docs/changelog folder
• [ ] updated/extended the documentation

If you take tox sources from PyPI, there is no tox.ini file in them, which makes test_verbosity_guess_miss_match fail because tox complains about missing config file and therefore the output is not as expected.

The output is:

tests/config/cli/test_parse.py::test_verbosity_guess_miss_match FAILED
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> traceback >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

capsys = <_pytest.capture.CaptureFixture object at 0x7fc51dd0b350>

    def test_verbosity_guess_miss_match(capsys: CaptureFixture) -> None:
        result = get_options("-rv")
        assert result.parsed.verbosity == 3
    
        assert logging.getLogger().level == logging.INFO
    
        for name in ("distlib.util", "filelock"):
            logger = logging.getLogger(name)
            assert logger.disabled
        logging.error("E")
        logging.warning("W")
        logging.info("I")
        logging.debug("D")
    
        out, err = capsys.readouterr()
>       assert out == "ROOT: E\nROOT: W\nROOT: I\n"
E       AssertionError: assert 'ROOT: No tox... W\nROOT: I\n' == 'ROOT: E\nROOT: W\nROOT: I\n'
E         + ROOT: No tox.ini or setup.cfg or pyproject.toml found, assuming empty tox.ini at /builddir/build/BUILD/tox-4.2.6
E           ROOT: E
E           ROOT: W
E           ROOT: I

capsys     = <_pytest.capture.CaptureFixture object at 0x7fc51dd0b350>
err        = ''
logger     = <Logger filelock (INFO)>
name       = 'filelock'
out        = 'ROOT: No tox.ini or setup.cfg or pyproject.toml found, assuming empty tox.ini at /builddir/build/BUILD/tox-4.2.6\nROOT: E\nROOT: W\nROOT: I\n'
result     = Options(parsed=Parsed(colored='no', verbose=3, quiet=0, exit_and_dump_after=0, config_file=None, work_dir=None, root_d...acy': <function legacy at 0x7fc51df1e0c0>, 'le': <function legacy at 0x7fc51df1e0c0>}, log_handler=<ToxHandler (INFO)>)

tests/config/cli/test_parse.py:35: AssertionError