Update HACKING.txt and Pyramid's setup.py to use pip

[stevepiercy]

In relation to #2104, Pyramid's HACKING.txt and setup.py should be updated to use pip for consistency. However this is outside the scope of #2104 because it's not "docs" and it needs special attention from developers who work on Pyramid's core and understand implications of such a change.

The three scaffold's setup.pys have been updated for the Pyramid 1.7 release already on docs/easy-install-to-pip.2104, and may serve as examples of the proposed changes.

[stevepiercy]

Changes to setup.py

Current

testing_extras = tests_require + [
    'nose',
    'coverage',
    'virtualenv', # for scaffolding tests
    ]
...
      extras_require={
          'testing': testing_extras,
          'docs': docs_extras,
          },
      tests_require=tests_require,
      test_suite="pyramid.tests",

Proposed

tests_require = [
    'WebTest >= 1.3.1',  # py3 compat
    'pytest',  # includes virtualenv
    'pytest-cov',
    ]
...
      extras_require={
          'testing': tests_require,
          'docs': docs_extras,
          },

Would this break anything I might have overlooked?

[mmerickel]

That particular change is fine to make. Our tox file is already using pip as well. We should update our HACKING docs to recommend the similar workflow but I can do that myself later tonight.

[digitalresistor]

If we remove nose we need to update our tox to start using py.test as well instead of nosetests.

[digitalresistor]

This is the tox file I use for pyramid_authsanity: https://github.com/usingnamespace/pyramid_authsanity/blob/master/tox.ini

[mmerickel]

Removing nose in pyramid core should not part of these changes. I renamed the PR to reflect that. I didn't realize that was something @stevepiercy was trying to do in his original paste. I thought he was just merging the testing extras together into a single array.

[stevepiercy]

My intent was to copy what we did in the scaffolds to Pyramid's setup.py, specifically merge testing extras into a single array and use py.test instead of nose, as my proposal above reflects.

As I understand the situation, neither is desired by the core team at this time, so I reverted setup.py to its original state.

[stevepiercy]

Closed by #2492