Problems installing library with setuptools > 58.0.0

[ajakubo1]

I was installing your package recently and it came to my attention that installation fails.

A simple test to replicate:

Adams-MBP:programming claim$ mkdir testing_embedly_installation
Adams-MBP:programming claim$ cd testing_embedly_installation/
Adams-MBP:testing_embedly_installation claim$ python3 -m venv venv
Adams-MBP:testing_embedly_installation claim$ source venv/bin/activate
(venv) Adams-MBP:testing_embedly_installation claim$ pip install -U setuptools
Collecting setuptools
  Using cached https://files.pythonhosted.org/packages/11/b9/adac241e2c4aca7ae4ddd86d3c18227667665b6e7eac550695bfc50c7e3d/setuptools-60.6.0-py3-none-any.whl
Installing collected packages: setuptools
  Found existing installation: setuptools 41.2.0
    Uninstalling setuptools-41.2.0:
      Successfully uninstalled setuptools-41.2.0
Successfully installed setuptools-60.6.0
(venv) Adams-MBP:testing_embedly_installation claim$ python
Python 3.8.3 (v3.8.3:6f8c8320e9, May 13 2020, 16:29:34)
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import setuptools
>>> setuptools.__version__
'60.6.0'
>>> ^D
(venv) Adams-MBP:testing_embedly_installation claim$ pip install embedly
Collecting embedly
  Using cached https://files.pythonhosted.org/packages/d7/94/2e387186617fe450fd21da3fd08c4ea1c68914c21622e939a892755620bc/Embedly-0.5.0.tar.gz
    ERROR: Command errored out with exit status 1:
     command: /Users/claim/programming/testing_embedly_installation/venv/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/z9/p68f7pds4nz6lg602cxzhm040000gn/T/pip-install-5c2mwtoc/embedly/setup.py'"'"'; __file__='"'"'/private/var/folders/z9/p68f7pds4nz6lg602cxzhm040000gn/T/pip-install-5c2mwtoc/embedly/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base pip-egg-info
         cwd: /private/var/folders/z9/p68f7pds4nz6lg602cxzhm040000gn/T/pip-install-5c2mwtoc/embedly/
    Complete output (2 lines):
    Warning: 'classifiers' should be a list, got type 'tuple'
    error in Embedly setup command: use_2to3 is invalid.
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

there are 2 issues that need to be addressed here:

1. classifiers are a tuple (should be a list)
2. use_2to3 is no longer available in setuptools (since version 58.0.0 - more on that here: https://setuptools.pypa.io/en/latest/history.html#v58-0-0)

For now, I have created a fork that (I think?) addresses the problems as I'm not sure if this lib is still supported (but as my changes remove support for python2 completely, it would be a bit naughty to create a PR to this branch from it :D).

[whardier]

#32