importlib.machinery.ModuleSpec and find_spec() were introduced in Python 3.4
under PEP 451. They replace the find_module() API of PEP 302, which was
deprecated from Python 3.4. They were removed in Python 3.12 along with the
imp module.
This change adds support for the PEP 451 APIs. Mitogen should no longer import
imp on Python versions that support ModuleSpec. Tests have been added to cover
the new APIs.
CI jobs have been added to cover Python 3.x on macOS.
Refs #1033
Co-authored-by: Witold Baryluk <witold.baryluk@gmail.com>
Using https:// requires certificate store management and additional parameter
passing that changed across Ansible and Python versions. Using http:// allows
the same tests to be used across wider spans of Python version on the
controller, and Python verison on the targets.
Python 3.12 on a target + get_uri needs Ansible >= 8 (ansible-core >= 2.15).
Python 3.12 removed deprecated httplib.HTTPSConnection() arguments.
https://github.com/ansible/ansible/pull/80751
With current macOS 11 runner images (20231216.1) the `python` on `$PATH` is
Python 3.12 and setuptools isn't installed by default. E.g.
```
python -mtox -e "py27-mode_localhost-ansible4"
========================== Starting Command Output ===========================
/bin/bash --noprofile --norc
/Users/runner/work/_temp/93a29c4c-f606-45e4-8dbd-a4a5f51b8730.sh
GLOB sdist-make: /Users/runner/work/1/s/setup.py
ERROR: invocation failed (exit code 1), logfile:
/Users/runner/work/1/s/.tox/log/GLOB-0.log
================================== log start
===================================
Traceback (most recent call last):
File "/Users/runner/work/1/s/setup.py", line 32, in <module>
from setuptools import find_packages, setup
ModuleNotFoundError: No module named 'setuptools'
```
Installing setuptools under Python 3.12 chooses package versions incompatible
with Python 2.7. Additionally Mitogen isn't yet compatible with Python 3.12
(#1033), so tests that call a local context with `python` fail.
This prevents unreleased versions appearing on the website (e.g. 0.3.5.dev0),
but introduces the risk of forgetting to update the website after a release.
A better fix requires deeper design/workflow thought.
refs #1028
This should address the warning in Azure Pipelines
> You should provide GitHub token if you want to download a python release.
> Otherwise you may hit the GitHub anonymous download limit.
The token is provided from a secret variable in the pipeline.
Fixes
```
======================================================================
ERROR: setUpClass (ssh_test.BannerTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/vsts/work/1/s/tests/testlib.py", line 625, in setUpClass
cls.dockerized_ssh = DockerizedSshDaemon(**daemon_args)
File "/home/vsts/work/1/s/tests/testlib.py", line 553, in __init__
self.start_container()
File "/home/vsts/work/1/s/tests/testlib.py", line 533, in start_container
self._get_container_port()
File "/home/vsts/work/1/s/tests/testlib.py", line 510, in _get_container_port
self.port = int(bport)
ValueError: invalid literal for int() with base 10: ':]:32770'
```
To do so the test suite allows a weak cryptographic alogorithm (SHA1) to be
used, principally for CentOS 6 targets. This can be removed if/when support
for older (legacy) targets is dropped.
Only the test suite enables this known weak alogorithm. Mitogen as-shipped
doesn't enable or disable algorithms.
I'm abandoning tox-factor because having any [tox] requires = ... causes tox
3.x to create an isolated virtualenv for running tox itself. Since Tox 4.x was
released that virtualenv gets it, which is incompatible with the tox-factor
plugin.
e.g.
```
Traceback (most recent call last):
File
"/Users/runner/work/1/s/.tox/.tox/lib/python3.10/site-packages/tox_factor/compat.py",
line 2, in <module>
from tox.config.parallel import ENV_VAR_KEY_PUBLIC as TOX_PARALLEL_ENV
ModuleNotFoundError: No module named 'tox.config.parallel'
```
faulthandler is a stdlib module in Python 3.3+. For a long time a PyPI package
of the same name was available for earlier Python releases. That package has
since been removed from PyPI, and the source respoitory archived. So we should
not rely on it.
fixes#983 refs #970
Refs #925#969
I'm not 100% confident that merely removing this is the full fix,
without substituting something else. I am sure keeping it would be
the greater of two evils. __del__() should be avoided on general
principal, and it's associated with multiple intermittant CI
failures, plus multiple user reported issues.
Alex Willmer