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Development on Setuptools
-------------------------
Setuptools is maintained by the Python community under the Python Packaging
Authority (PyPA) and led by Jason R. Coombs.
This document describes the process by which Setuptools is developed.
This document assumes the reader has some passing familiarity with
*using* setuptools, the ``pkg_resources`` module, and pip. It
does not attempt to explain basic concepts like inter-project
dependencies, nor does it contain detailed lexical syntax for most
file formats. Neither does it explain concepts like "namespace
packages" or "resources" in any detail, as all of these subjects are
covered at length in the setuptools developer's guide and the
``pkg_resources`` reference manual.
Instead, this is **internal** documentation for how those concepts and
features are *implemented* in concrete terms. It is intended for people
who are working on the setuptools code base, who want to be able to
troubleshoot setuptools problems, want to write code that reads the file
formats involved, or want to otherwise tinker with setuptools-generated
files and directories.
Note, however, that these are all internal implementation details and
are therefore subject to change; stick to the published API if you don't
want to be responsible for keeping your code from breaking when
setuptools changes. You have been warned.
.. toctree::
:maxdepth: 1
developer-guide
releases
PK ! rE releases.rstnu [ ===============
Release Process
===============
In order to allow for rapid, predictable releases, Setuptools uses a
mechanical technique for releases, enacted on tagged commits by
continuous integration.
To finalize a release, run ``tox -e finalize``, review, then push
the changes.
If tests pass, the release will be uploaded to PyPI.
Release Frequency
-----------------
Some have asked why Setuptools is released so frequently. Because Setuptools
uses a mechanical release process, it's very easy to make releases whenever the
code is stable (tests are passing). As a result, the philosophy is to release
early and often.
While some find the frequent releases somewhat surprising, they only empower
the user. Although releases are made frequently, users can choose the frequency
at which they use those releases. If instead Setuptools contributions were only
released in batches, the user would be constrained to only use Setuptools when
those official releases were made. With frequent releases, the user can govern
exactly how often he wishes to update.
Frequent releases also then obviate the need for dev or beta releases in most
cases. Because releases are made early and often, bugs are discovered and
corrected quickly, in many cases before other users have yet to encounter them.
Release Managers
----------------
Additionally, anyone with push access to the master branch has access to cut
releases.
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developer-guide.rstnu [ ================================
Developer's Guide for Setuptools
================================
If you want to know more about contributing on Setuptools, this is the place.
-------------------
Recommended Reading
-------------------
Please read `How to write the perfect pull request
`_ for some tips
on contributing to open source projects. Although the article is not
authoritative, it was authored by the maintainer of Setuptools, so reflects
his opinions and will improve the likelihood of acceptance and quality of
contribution.
------------------
Project Management
------------------
Setuptools is maintained primarily in GitHub at `this home
`_. Setuptools is maintained under the
Python Packaging Authority (PyPA) with several core contributors. All bugs
for Setuptools are filed and the canonical source is maintained in GitHub.
User support and discussions are done through the issue tracker (for specific)
issues, through the `distutils-sig mailing list `_, or on IRC (Freenode) at
#pypa.
Discussions about development happen on the distutils-sig mailing list or on
`Gitter `_.
-----------------
Authoring Tickets
-----------------
Before authoring any source code, it's often prudent to file a ticket
describing the motivation behind making changes. First search to see if a
ticket already exists for your issue. If not, create one. Try to think from
the perspective of the reader. Explain what behavior you expected, what you
got instead, and what factors might have contributed to the unexpected
behavior. In GitHub, surround a block of code or traceback with the triple
backtick "\`\`\`" so that it is formatted nicely.
Filing a ticket provides a forum for justification, discussion, and
clarification. The ticket provides a record of the purpose for the change and
any hard decisions that were made. It provides a single place for others to
reference when trying to understand why the software operates the way it does
or why certain changes were made.
Setuptools makes extensive use of hyperlinks to tickets in the changelog so
that system integrators and other users can get a quick summary, but then
jump to the in-depth discussion about any subject referenced.
---------------------
Making a pull request
---------------------
When making a pull request, please
:ref:`include a short summary of the changes ` and a reference to any issue tickets that the PR is
intended to solve.
All PRs with code changes should include tests. All changes should
include a changelog entry.
.. include:: ../../changelog.d/README.rst
-------------------
Auto-Merge Requests
-------------------
To support running all code through CI, even lightweight contributions,
the project employs Mergify to auto-merge pull requests tagged as
auto-merge.
Use ``hub pull-request -l auto-merge`` to create such a pull request
from the command line after pushing a new branch.
-------
Testing
-------
The primary tests are run using tox. Make sure you have tox installed,
and invoke it::
$ tox
Under continuous integration, additional tests may be run. See the
``.travis.yml`` file for full details on the tests run under Travis-CI.
-------------------
Semantic Versioning
-------------------
Setuptools follows ``semver``.
.. explain value of reflecting meaning in versions.
----------------------
Building Documentation
----------------------
Setuptools relies on the `Sphinx`_ system for building documentation.
The `published documentation`_ is hosted on Read the Docs.
To build the docs locally, use tox::
$ tox -e docs
.. _Sphinx: http://www.sphinx-doc.org/en/master/
.. _published documentation: https://setuptools.readthedocs.io/en/latest/
---------------------
Vendored Dependencies
---------------------
Setuptools has some dependencies, but due to `bootstrapping issues
`_, those dependencies
cannot be declared as they won't be resolved soon enough to build
setuptools from source. Eventually, this limitation may be lifted as
PEP 517/518 reach ubiquitous adoption, but for now, Setuptools
cannot declare dependencies other than through
``setuptools/_vendor/vendored.txt`` and
``pkg_resources/_vendor/vendored.txt`` and refreshed by way of
``paver update_vendored`` (pavement.py).
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