Fixes#7007
Python 3.4 is [EOL](https://www.python.org/dev/peps/pep-0429/), and only Python 3.x version available for CentOS 6 through EPEL is this version, and so is used by `certbot-auto`, the only official way to install Certbot on this platform.
This unpleasant situation becomes a little more uncomfortable, considering that the newest `pip` version (19.2) [just dropped Python 3.4 support](https://github.com/pypa/pip/issues/6685) and will refuse to start on this Python version. We can expect a lot of dependencies to follow this path now.
One direct result of this situation is that a fix to support correctly the ARM platforms requires to upgrade `pip` to 19.2 for `certbot-auto`. So this is not possible right now.
Then, let's upgrade Certbot instances on CentOS 6 to a supported version of Python 3.
This PR proposes a new bootstrap approach for CentOS 6 platform, `BootstrapRpmPython3Legacy`, that will install Python 3.6 from [SCL](https://www.softwarecollections.org) (the latest one available for now on CentOS 6). In term of Python 3 specific bootstrap methods, I take the occasion here to completely separate the bootstrap of CentOS 6 as a legacy system, from the RPM-based newest systems (like Fedora 29+) that are simply dropping support for Python 2.x. This is in prevision of future migration for all systems on Python 3.x, that is a different problematic than supporting old systems.
* Add logic
* Rebuilt letsencrypt-auto
* Fix logic
* Focus on specific packages
* Maintain PATH for further invocations of letsencrypt-auto after bootstrap.
* Various corrections
* Fix farm test for RHEL6
* Working centos6 letsencrypt-auto self tests
* Fix test_sdist for CentOS 6
* Corrections
* Work in progress
* Working configuration
* Fix typo
* Remove EPEL. Add a test.
* Update letsencrypt-auto-source/letsencrypt-auto.template
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Improvements after review
* Improvements
* Add a comment
* Add a test
* Update a test
* Corrections
* Update function return
* Work in progress
* Correct behavior on oracle linux 6.
* Corrections
* Rebuild script
* Add letsencrypt-auto tests for oraclelinux6
* Update tox.ini
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/tests/oraclelinux6_tests.sh
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto.template
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto.template
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/tests/oraclelinux6_tests.sh
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Remove specific code for scientific linux
* Change some variables names
* Update letsencrypt-auto-source/tests/oraclelinux6_tests.sh
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Various corrections
* Fix tests
* Add a comment
* Update message
* Fix test message
* Update letsencrypt-auto-source/letsencrypt-auto.template
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update scripts
* More focused assertion
* Add back a test
* Update script
* Update letsencrypt-auto-source/letsencrypt-auto.template
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Update letsencrypt-auto-source/letsencrypt-auto.template
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
* Check quiet mode
* Add changelog
* Update letsencrypt-auto-source/tests/oraclelinux6_tests.sh
Co-Authored-By: Brad Warren <bmw@users.noreply.github.com>
Fixes#6697.
This PR updates the version of setuptools pinned in pipstrap which works around the problems we have seen on recent OSes.
Why did I pick this version of setuptools? Because it's the latest and greatest, [supports all versions of Python that we do](https://github.com/pypa/setuptools/blob/v40.6.3/setup.py#L173), [has been out for a month and a half without the need for a point release](https://setuptools.readthedocs.io/en/latest/history.html), and has no non-optional dependencies.
For the last point about dependencies, I don't think we have too much to worry about. setuptools did have a period between versions 34.0.0 and 36.0.0 where they tried to have normal dependencies on other packages, but reverted these changes. See their [changelog for 36.0.0](https://setuptools.readthedocs.io/en/latest/history.html#v36-0-0).
You can also compare their [current setup.py file](https://github.com/pypa/setuptools/blob/v40.6.3/setup.py) to the [setup.py file for the currently pinned version](https://github.com/pypa/setuptools/blob/v29.0.1/setup.py) and you'll see [not much has changed](https://pastebin.com/nQj6d7D8).
Not only that, but I have successfully tested these changes on:
* ubuntu18.10
* ubuntu18.04LTS
* ubuntu16.04LTS
* ubuntu14.04LTS
* ubuntu14.04LTS_32bit
* debian9
* debian8.1
* amazonlinux-2015.09.1
* amazonlinux-2015.03.1
* RHEL7
* fedora23
* fedora29
* centos7
* centos6
* freebsd11
* macOS
* Update setuptools to 40.6.3.
* Build letsencrypt-auto.
* update changelog
* Don't use pipstrap in Dockerfile.centos6.
* If there's no python or there's only python2.6 on red hat systems, install python3
* Always check for python2.6
* address style, documentation, nits
* factor out all initialization code
* fix up python version return value when no python installed
* add no python error and exit
* document DeterminePythonVersion parameters
* build letsencrypt-auto
* close brace
* build leauto
* fix syntax errors
* set USE_PYTHON_3 for all cases
* rip out NOCRASH
* replace NOCRASH, update LE_PYTHON set logic
* use built-in venv for py3
* switch to LE_PYTHON not affecting bootstrap selection and not overwriting LE_PYTHON
* python3ify fetch.py
* get fetch.py working with python2 and 3
* don't verify server certificates in fetch.py HttpsGetter
* Use SSLContext and an environment variable so that our tests continue to never verify server certificates.
* typo
* build
* remove commented out code
* address review comments
* add documentation for YES_FLAG and QUIET_FLAG
* Add tests to centos6 Dockerfile to make sure we install python3 if and only if appropriate to do so.
* Use pipstrap to install a good version of pip
* Use pytest in cb-auto tests
* Remove nose usage in auto_test.py
* remove nose dev dep
* use pytest in test_tests
* Use pytest in tox
* Update dev dependency pinnings
* remove nose multiprocess lines
* Use pytest for coverage
* Use older py and pytest for old python versions
* Add test for Error.__str__
* pin pytest in oldest test
* Fix tests for DNS-DO plugin on py26
* Work around bug for Python 3.3
* Clarify dockerfile comments
