pip install httplib2 --user FAILED for v0.18.0 and later

[rileyk90]

[guestshell@guestshell ~]$ pip install httplib2==0.18.0 --user
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
Collecting httplib2==0.18.0
  Downloading https://files.pythonhosted.org/packages/a9/24/66d23495c90d39c9d511e9167e5d051fe2c8002b1f68da35410d561051bf/httplib2-0.18.0.tar.gz (257kB)
     |################################| 266kB 2.8MB/s 
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  ERROR: Command errored out with exit status 2:
   command: /usr/bin/python /usr/lib/python2.7/site-packages/pip-19.2.1-py2.7.egg/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmpKWypMJ
       cwd: /var/volatile/tmp/pip-install-cFfq97/httplib2
  Complete output (1 lines):
  /usr/bin/python: can't open file '/usr/lib/python2.7/site-packages/pip-19.2.1-py2.7.egg/pip/_vendor/pep517/_in_process.py': [Errno 2] No such file or directory
  ----------------------------------------
ERROR: Command errored out with exit status 2: /usr/bin/python /usr/lib/python2.7/site-packages/pip-19.2.1-py2.7.egg/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmpKWypMJ Check the logs for full command output.

Earlier versions were successful. pip install logs are attached.
httplib2_install_logs.txt
Please advise.

[temoto]

It says can't open file pip/_vendor/pep517/_in_process.py
It is error in pip. This is not related to httplib2.

[rileyk90]

I've used a fresh upgrade of pip v20.1, which was the latest pip version released before httplib2 v0.18.0, as well as pip v19.2.1 and v20.1.1. I've had no troubles with any other python packages installing under these pip versions, including httplib2 v0.17.4, until httplib v0.18.0 was released. This suggests something in httplib0.18.0 and later is incompatible with pip.

[temoto]

@rileyk90 I'm very sorry, my best guess is httplib2's fault part is shipping pyproject.toml since 0.18.0 which encourages pip to build wheels and our separate py2/3 code is preventing wheel building. Maybe there is some way to tell pip to skip building wheels, I don't know.

Please try pip --no-use-pep517

Related: pypa/pip#6163

By the way, you should seriously consider upgrading to Python3 because I'm going to remove python2 code in future versions soon. On bright side, it will become like a regular new package with good support for all modern tools.

[EricSoroos]

ERROR: Disabling PEP 517 processing is invalid: project specifies a build backend of setuptools.build_meta in pyproject.toml

I'm having trouble building this on a system that's using Ubuntu 16.04's system python. There's a combination of interrelated incompatibilities, but the root appears to be something in setuptools not playing nice.

It would be nice if security updates were decoupled from build system updates, e.g. 0.17.5 as the security update, then 0.18.0 be the build system update including the security patch.

[temoto]

@EricSoroos yeah good idea, I'll do 0.17.5 without pyproject.toml

[temoto]

@rileyk90 @EricSoroos please try to install 0.17.5 from test pypi.

pip install --index-url https://test.pypi.org/simple/ 'httplib2==0.17.5'