pbr is a setuptools plugin and so to use it you must use setuptools and
call setuptools.setup(). While the normal setuptools facilities are
available, pbr makes it possible to express them through static data files.
setup.py¶pbr only requires a minimal setup.py file compared to a standard
setuptools project. This is because most configuration is located in static
configuration files. This recommended minimal setup.py file should look
something like this:
#!/usr/bin/env python
from setuptools import setup
setup(
setup_requires=['pbr'],
pbr=True,
)
Note
It is necessary to specify pbr=True to enabled pbr functionality.
Note
While one can pass any arguments supported by setuptools to setup(),
any conflicting arguments supplied in setup.cfg will take precedence.
setup.cfg¶The setup.cfg file is an INI-like file that can mostly replace the
setup.py file. It is similar to the setup.cfg file found in recent
versions of setuptools. A simple sample can be found in pbr’s own
setup.cfg (it uses its own machinery to install itself):
[metadata]
name = pbr
author = OpenStack Foundation
author-email = openstack-dev@lists.openstack.org
summary = OpenStack's setup automation in a reusable form
description-file = README.rst
description-content-type = text/x-rst; charset=UTF-8
home-page = https://launchpad.net/pbr
project_urls =
Bug Tracker = https://bugs.launchpad.net/pbr/
Documentation = https://docs.openstack.org/pbr/
Source Code = https://git.openstack.org/cgit/openstack-dev/pbr/
license = Apache-2
classifier =
Development Status :: 4 - Beta
Environment :: Console
Environment :: OpenStack
Intended Audience :: Developers
Intended Audience :: Information Technology
License :: OSI Approved :: Apache Software License
Operating System :: OS Independent
Programming Language :: Python
keywords =
setup
distutils
[files]
packages =
pbr
data_files =
etc/pbr = etc/*
etc/init =
pbr.packaging.conf
pbr.version.conf
[entry_points]
console_scripts =
pbr = pbr.cmd:main
pbr.config.drivers =
plain = pbr.cfg.driver:Plain
Recent versions of setuptools provide many of the same sections as pbr. However, pbr does provide a number of additional sections:
filesentry_pointsbackwards_compatpbrIn addition, there are some modifications to other sections:
metadatabuild_sphinxFor all other sections, you should refer to either the setuptools
documentation or the documentation of the package that provides the section,
such as the extract_mesages section provided by Babel.
Note
Comments may be used in setup.cfg, however all comments should start
with a # and may be on a single line, or in line, with at least one
white space character immediately preceding the #. Semicolons are not a
supported comment delimiter. For instance:
[section]
# A comment at the start of a dedicated line
key =
value1 # An in line comment
value2
# A comment on a dedicated line
value3
Note
On Python 3 setup.cfg is explicitly read as UTF-8. On Python 2 the
encoding is dependent on the terminal encoding.
files¶The files section defines the install location of files in the package
using three fundamental keys: packages, namespace_packages, and
data_files.
packagessetuptools.find_packages in that it recurses the
Python package hierarchy below the given top level and installs all of it. If
packages is not specified, it defaults to the value of the name field
given in the [metadata] section.namespace_packagespackages, but is a list of packages that provide namespace
packages.data_filesA list of files to be installed. The format is an indented block that contains key value pairs which specify target directory and source file to install there. More than one source file for a directory may be indicated with a further indented list. Source files are stripped of leading directories. Additionally, pbr supports a simple file globbing syntax for installing entire directory structures. For example:
[files]
data_files =
etc/pbr = etc/pbr/*
etc/neutron =
etc/api-paste.ini
etc/dhcp-agent.ini
etc/init.d = neutron.init
This will result in /etc/neutron containing api-paste.ini and
dhcp-agent.ini, both of which pbr will expect to find in the etc
directory in the root of the source tree. Additionally, neutron.init from
that directory will be installed in /etc/init.d. All of the files and
directories located under etc/pbr in the source tree will be installed
into /etc/pbr.
Note that this behavior is relative to the effective root of the environment
into which the packages are installed, so depending on available permissions
this could be the actual system-wide /etc directory or just a top-level
etc subdirectory of a virtualenv.
entry_points¶The entry_points section defines entry points for generated console scripts
and Python libraries. This is actually provided by setuptools but is
documented here owing to its importance.
The general syntax of specifying entry points is a top level name indicating the entry point group name, followed by one or more key value pairs naming the entry point to be installed. For instance:
[entry_points]
console_scripts =
pbr = pbr.cmd:main
pbr.config.drivers =
plain = pbr.cfg.driver:Plain
fancy = pbr.cfg.driver:Fancy
Will cause a console script called pbr to be installed that executes the
main function found in pbr.cmd. Additionally, two entry points will be
installed for pbr.config.drivers, one called plain which maps to the
Plain class in pbr.cfg.driver and one called fancy which maps to
the Fancy class in pbr.cfg.driver.
backwards_compat¶pbr¶The pbr section controls pbr-specific options and behaviours.
skip_git_sdistIf enabled, pbr will not generate a manifest file from git commits. If this is enabled, you may need to define your own manifest template.
This can also be configured using the SKIP_GIT_SDIST environment
variable, as described here.
skip_changelogIf enabled, pbr will not generated a ChangeLog file from git commits.
This can also be configured using the SKIP_WRITE_GIT_CHANGELOG
environment variable, as described here
skip_authorsIf enabled, pbr will not generate an AUTHORS file from git commits.
This can also be configured using the SKIP_GENERATE_AUTHORS environment
variable, as described here
skip_renoIf enabled, pbr will not generate a RELEASENOTES.txt file if reno is
present and configured.
This can also be configured using the SKIP_GENERATE_RENO environment
variable, as described here.
autodoc_tree_index_modulesA boolean option controlling whether pbr should generate an index of
modules using sphinx-apidoc. By default, all files except setup.py
are included, but this can be overridden using the autodoc_tree_excludes
option.
Deprecated since version 4.2: This feature has been replaced by the sphinxcontrib-apidoc extension. Refer to the build_sphinx overview for more information.
autodoc_tree_excludesA list of modules to exclude when building documentation using
sphinx-apidoc. Defaults to [setup.py]. Refer to the
sphinx-apidoc man page for more information.
Deprecated since version 4.2: This feature has been replaced by the sphinxcontrib-apidoc extension. Refer to the build_sphinx overview for more information.
autodoc_index_modulesA boolean option controlling whether pbr should itself generates
documentation for Python modules of the project. By default, all found Python
modules are included; some of them can be excluded by listing them in
autodoc_exclude_modules.
Deprecated since version 4.2: This feature has been replaced by the sphinxcontrib-apidoc extension. Refer to the build_sphinx overview for more information.
autodoc_exclude_modulesA list of modules to exclude when building module documentation using pbr.
fnmatch style pattern (e.g. myapp.tests.*) can be used.
Deprecated since version 4.2: This feature has been replaced by the sphinxcontrib-apidoc extension. Refer to the build_sphinx overview for more information.
api_doc_dirA subdirectory inside the build_sphinx.source_dir where auto-generated
API documentation should be written, if autodoc_index_modules is set to
True. Defaults to "api".
Deprecated since version 4.2: This feature has been replaced by the sphinxcontrib-apidoc extension. Refer to the build_sphinx overview for more information.
Note
When using autodoc_tree_excludes or autodoc_index_modules you may
also need to set exclude_patterns in your Sphinx configuration file
(generally found at doc/source/conf.py in most OpenStack projects)
otherwise Sphinx may complain about documents that are not in a toctree.
This is especially true if the [sphinx_build] warning-is-error option is
set. See the Sphinx build configuration file documentation for more
information on configuring Sphinx.
Changed in version 4.2: The autodoc_tree_index_modules, autodoc_tree_excludes,
autodoc_index_modules, autodoc_exclude_modules and api_doc_dir
settings are all deprecated.
Changed in version 2.0: The pbr section used to take a warnerrors option that would enable
the -W (Turn warnings into errors.) option when building Sphinx. This
feature was broken in 1.10 and was removed in pbr 2.0 in favour of the
[build_sphinx] warning-is-error provided in Sphinx 1.5+.
metadata¶build_sphinx¶Changed in version 3.0: The build_sphinx plugin used to default to building both HTML and man
page output. This is no longer the case, and you should explicitly set
builders to html man if you wish to retain this behavior.
Deprecated since version 4.2: This feature has been superseded by the sphinxcontrib-apidoc (for generation of API documentation) and Sphinx Extension (for configuration of versioning via package metadata) extensions. It will be removed in a future release.
The build_sphinx section is a version of the build_sphinx setuptools
plugin provided with Sphinx. This plugin extends the original plugin to add the
following:
Automatic generation of module documentation using the sphinx-apidoc tool
Automatic configuration of the project, version and release
settings using information from pbr itself
Support for multiple builders using the builders configuration option
Note
Only applies to Sphinx < 1.6. See documentation on builders below.
The version of build_sphinx provided by pbr provides a single additional
option.
buildersA comma separated list of builders to run. For example, to build both HTML
and man page documentation, you would define the following in your
setup.cfg:
[build_sphinx]
builders = html,man
source-dir = doc/source
build-dir = doc/build
all-files = 1
warning-is-error = 1
Deprecated since version 3.2.0: Sphinx 1.6+ adds support for specifying multiple builders in the default
builder option. You should use this option instead. Refer to the
Sphinx documentation for more information.
For information on the remaining options, refer to the Sphinx documentation.
In addition, the autodoc_index_modules, autodoc_tree_index_modules,
autodoc_exclude_modules and autodoc_tree_excludes options in the
pbr section will affect the output of the automatic module
documentation generation.
Requirements files are used in place of the install_requires and
extras_require attributes. Requirement files should be given one of the
below names. This order is also the order that the requirements are tried in:
requirements.txttools/pip-requiresOnly the first file found is used to install the list of packages it contains.
Changed in version 5.0: Previously you could specify requirements for a given major version of
Python using requirements files with a -pyN suffix. This was deprecated
in 4.0 and removed in 5.0 in favour of environment markers.
Groups of optional dependencies, or “extra” requirements, can be described
in your setup.cfg, rather than needing to be added to setup.py. An
example (which also demonstrates the use of environment markers) is shown
below.
Environment markers are conditional dependencies which can be added to the
requirements (or to a group of extra requirements) automatically, depending on
the environment the installer is running in. They can be added to requirements
in the requirements file, or to extras defined in setup.cfg, but the format
is slightly different for each.
For requirements.txt:
argparse; python_version=='2.6'
This will result in the package depending on argparse only if it’s being
installed into Python 2.6.
For extras specified in setup.cfg, add an extras section. For instance,
to create two groups of extra requirements with additional constraints on the
environment, you can use:
[extras]
security =
aleph
bet:python_version=='3.2'
gimel:python_version=='2.7'
testing =
quux:python_version=='2.7'
Deprecated since version 4.0.
As described in Features, pbr may override the test command
depending on the test runner used.
A typical usage would be in tox.ini such as:
[tox]
minversion = 2.0
skipsdist = True
envlist = py33,py34,py35,py26,py27,pypy,pep8,docs
[testenv]
usedevelop = True
setenv =
VIRTUAL_ENV={envdir}
CLIENT_NAME=pbr
deps = .
-r{toxinidir}/test-requirements.txt
commands =
python setup.py test --testr-args='{posargs}'
The argument --coverage will set PYTHON to coverage run to produce
a coverage report. --coverage-package-name can be used to modify or narrow
the packages traced.
conf.py¶As described in Features, pbr provides a Sphinx extension to automatically configure the version numbers for your documentation using pbr metadata.
To enable this extension, you must add it to the list of extensions in
your conf.py file:
extensions = [
'pbr.sphinxext',
# ... other extensions
]
You should also unset/remove the version and release attributes from
this file.
Except where otherwise noted, this document is licensed under Creative Commons Attribution 3.0 License. See all OpenStack Legal Documents.