PYCENTRAL() PYCENTRAL()
NAME
pycentral - register and build utility for Python packages
SYNOPSIS
pycentral [-h] [-v] <cmd> [<cmd options>] [<args>]
DESCRIPTION
pycentral
provides support for installing python modules independent
of the current installed Python version and handling
byte-compilation and -removal tasks in installation scripts.
OPTIONS -v, --version
Limit the output to the version numbers of the python versions.
-h, --help
Print a help text.
pycentral has the following sub commands. For fine grained help, call: pycentral <cmd>.
bccompile
Byte compile .py files in a package.
bcremove
Remove the byte compiled .py files.
list List all managed files.
pkginstall
Make a package available for all supported runtimes.
pkgprepare
Prepare a package for all supported runtimes.
pkgremove
Remove a package installed for all supported runtimes.
pkglist
List pycentral-managed files of a package for all supported runtimes.
rtinstall
Make installed packages available for this runtime.
rtremove
Remove packages installed for this runtime.
updatedefault
Update the default python version.
debhelper
move files to pycentral locaation, variable substitutions (called by dh_pycentral).
pycentraldir <package>
Show the installation directory used by pycentral for <package>.
showdefault
Show default python version number. Deprecated, use pyversions(1)
showsupported
Show the supported python versions. Deprecated, use pyversions(1)
showversions
Show version numbers of supported python versions. Deprecated, use pyversions(1) dh_pycentral, should not be called directly).
version
Show the pycentral version.
FILES
/etc/python/debian_config is searched for the attribute overwrite-local. If set to 1, or True, existing files in
/usr/lib/pythonX.Y/*-packages are overwritten with symbolic links to the pycentral install area. The default is to abort the installation
of a package, when files already exist. This behaviour may be useful, when python libraries were manually installed into this directory.
The attribute byte-compile can be set to a comma separated list of the values standard and optimze to indicate how files should be byte-
compiled.
SEE ALSO pyversions(1), Python policy.
AUTHOR
Matthias Klose
PYCENTRAL()
Check Out this Related Man Page
DH_PYTHON2() DH_PYTHON2()
NAME
dh_python2 - calculates Python dependencies, adds maintainer scripts to byte compile files, etc.
SYNOPSIS
dh_python2 -p PACKAGE [-V [X.Y][-][A.B]] DIR_OR_FILE [-X REGEXPR]
DESCRIPTION
QUICK GUIDE FOR MAINTAINERS
o if necessary, describe supported Python versions via X-Python-Version field in debian/control,
o build-depend on python or python-all or python-all-dev (>= 2.6.6-3~),
o build module/application using its standard build system, remember to build extensions for all supported Python versions (loop over
pyversions -vr),
o install files to the standard locations, add --install-layout=deb to setup.py's install command if your package is using distutils,
o add python2 to dh's --with option, or:
o include /usr/share/cdbs/1/class/python-distutils.mk in debian/rules and depend on cdbs (>= 0.4.90), or:
o call dh_python2 in the binary-* target,
o add ${python:Depends} to Depends
NOTES
In order to support more than one Python version in the same binary package, dh_python2 (unlike dh_pycentral and dh_pysupport) creates sym-
links to all supported Python versions at build time. It means binNMU (or sourceful upload in case of architecture independent packages) is
required once a list of supported Python version is changed. It's faster and more robust than its competitors, though.
dependencies
dh_python2 tries to translate Python dependencies from requires.txt file to Debian dependencies. Use debian/pydist-overrides or --no-guess-
ing-deps option to override it if the guess is incorrect. If you want dh_python2 to generate more strict dependencies (f.e. to avoid ABI
problems) create debian/python-foo.pydist file. See /usr/share/doc/python-doc/README.PyDist (provided by python-doc package) for more
information. If the pydist file contains PEP386 flag or set of (uscan like) rules, dh_python2 will make the depedency versioned (version
requirements are ignored by default).
namespace feature
dh_python2 parses Egg's namespace_packages.txt files (in addition to --namespace command line argument(s)) and drops empty __init__.py
files from binary package. pycompile will regenerate them at install time and pyclean will remove them at uninstall time (if they're no
longer used in installed packages). It's still a good idea to provide __init__.py file in one of binary packages (even if all other pack-
ages use this feature).
private dirs
/usr/share/foo, /usr/share/games/foo, /usr/lib/foo and /usr/lib/games/foo private directories are scanned for Python files by default
(where foo is binary package name). If your package is shipping Python files in some other directory, add another dh_python2 call in
debian/rules with directory name as an argument - you can use different set of options in this call. If you need to change options (f.e. a
list of supported Python versions) for a private directory that is checked by default, invoke dh_python2 with --skip-private option and add
another call with a path to this directory and new options.
debug packages
In binary packages which name ends with -dbg, all files in /usr/lib/python2.X/{site,dist}-packages/ directory that have extensions differ-
ent than so or h are removed by default. Use --no-dbg-cleaning option to disable this feature.
pyinstall files
Files listed in debian/pkg.pyinstall file will be installed as public modules for all requested Python versions (dh_install doesn't know
about python's site- vs. dist-packages issue).
Syntax: path/to/file [VERSION_RANGE] [NAMESPACE]
debian directory is automatically removed from the path, so you can place your files in debian/ directory and install them from this loca-
tion (if you want to install them in "debian" namespace, set NAMESPACE to debian). If NAMESPACE is set, all listed files will be installed
in .../dist-packages/NAMESPACE/ directory.
Examples:
o foo.py installs .../dist-packages/foo.py for all supported Python versions
o foo/bar.py 2.6- installs .../dist-packages/foo/bar.py for versions >= 2.6
o foo/bar.py spam installs .../dist-packages/spam/bar.py
o debian/*.py spam.egg 2.5 installs .../python2.5/site-packages/spam/egg/*.py files
pyremove files
If you want to remove some files installed by build system (from all supported Python versions or only from a subset of these versions),
add them to debian/pkg.pyremove file.
Examples:
o *.pth removes .pth files from .../dist-packages/
o bar/baz.py 2.5 removes .../python2.5/site-packages/bar/baz.py
overriding supported / default Python versions
If you want to override system's list of supported Python versions or the default one (f.e. to build a package that includes symlinks for
older version of Python or compile .py files only for given interpreter version), you can do that via DEBPYTHON_SUPPORTED and/or
DEBPYTHON_DEFAULT env. variables.
Example: 2.5,2.7 limits the list of supported Python versions to Python 2.5 and Python 2.7.
OPTIONS --version
show program's version number and exit
-h, --help
show help message and exit
--no-guessing-versions
disable guessing other supported Python versions
--no-guessing-deps
disable guessing dependencies
--no-dbg-cleaning
do not remove any files from debug packages
--no-shebang-rewrite
do not rewrite shebangs
--skip-private
don't check private directories
-v, --verbose
turn verbose mode on
-i, --indep
act on architecture independent packages
-a, --arch
act on architecture dependent packages
-q, --quiet
be quiet
-p PACKAGE, --package=PACKAGE
act on the package named PACKAGE
-N NO_PACKAGE, --no-package=NO_PACKAGE
do not act on the specified package
-V VRANGE
specify list of supported Python versions. See pycompile(1) for examples
-X REGEXPR, --exclude=REGEXPR
exclude items that match given REGEXPR. You may use this option multiple times to build up a list of things to exclude.
--compile-all
compile all files from given private directory in postinst/rtupdate not just the ones provided by the package (i.e. do not pass the
--package parameter to pycompile/pyclean)
--depends=DEPENDS
translate given requirements into Debian dependencies and add them to ${python:Depends}. Use it for missing items in requires.txt
--recommends=RECOMMENDS
translate given requirements into Debian dependencies and add them to ${python:Recommends}
--suggests=SUGGESTS
translate given requirements into Debian dependencies and add them to ${python:Suggests}
--namespace
use this option (multiple time if necessary) if namespace_packages.txt is not complete
--ignore-namespace
ignore Egg's namespace declaration and --namespace option. This option will disable removing (and recreating at install time) empty
__init__.py files. Removing namespace_packages.txt from egg-info directory has the same effect.
--clean-pycentral
generate maintainer script that will remove byte code generated by python-central helper
--shebang=COMMAND
use given command as shebang in scripts
--ignore-shebangs
do not translate shebangs into Debian dependencies
SEE ALSO
o /usr/share/doc/python/python-policy.txt.gz
o /usr/share/doc/python-doc/README.PyDist (python-doc package)
o pycompile(1), pyclean(1)
o dh_python3(1), py3compile(1), py3clean(1)
o Wiki page about converting package to dh_python2: http://wiki.debian.org/Python/TransitionToDHPython2
DH_PYTHON2()